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学生网上选课管理系统_JAVA课程设计_开发日志_学生选课管理系统

作者：lpred | 2024-01-19 20:03:47

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学生选课管理系统

一、设计方案：

设计目标：

通过此次开发建立一个学生网上选课管理系统，实现对课程的基本信息维护以及学生选课、教师查看上课信息，管理员管理系统数据等。

从而通过本选课系统达到实际应用目的，为高校管理学生网上选课等方面提供极大便利。
 

流程目的图：

 功能拆分：

 

ER图：

变量名称标准：

管理员相关变量：Mno:管理员号码, Mname：管理员姓名, Maccount：管理员账号, Mtelephone：管理员电话, Mage：管理员年龄, Msex：性别, code：密码, Mpower：权限

        二、源代码开发部分：

1、数据库数据的导入：

使用sql语言创建：

 

 此处不过多赘述。详情数据库数据可私信。

2、sql server java建立 代码部分：

check course：

  1. import java.sql.Connection;
  2. public class CheckCourse {
  3. 	public static void CheckCourse(User user) throws Exception{
  4. 		System.out.println("已选择的课程有：");
  5. 		user.sql = "select * from myCourseInfo";
  6. 		user.count = user.statement.executeQuery(user.sql);
  7. 		while(user.count.next()) {
  8. 			System.out.println(user.count.getString("Cno") 
  9. 					+ user.count.getString("Grade") + user.count.getString("Sno"));
  10. 		}
  11. 	}
  12. }

TC：

  1. import java.util.Scanner;
  2.  
  3. public class TC {
  4.     static private Scanner scanner = new Scanner(System.in);
  5.     static private String Course_no;
  6.     static private int count;
  7.     //分配课程
  8.     public static boolean Assignment(User user) throws  Exception{
  9.         System.out.println("请输入教师号：");
  10.         String Tno ="'"+ scanner.next()+"\'";
  11.         user.sql = "select Tno from Teacher where Tno = "+Tno;
  12.         user.count=user.statement.executeQuery(user.sql);
  13.         if(!user.count.next()){
  14.             System.out.println("教师查询失败");
  15.             return false;
  16.         }
  17.         System.out.println("请输入课程号：");
  18.         Course_no ="\'"+ scanner.next()+"\'";
  19.         user.sql="select Couser_no from Couser where Couser_no="+Course_no;
  20.         user.count = user.statement.executeQuery(user.sql);
  21.         if(!user.count.next()){
  22.             System.out.println("课程查询失败");
  23.             return false;
  24.         }
  25.         user.sql="insert into TC values("+Tno+","+Course_no+")";
  26.         count=user.statement.executeUpdate(user.sql);
  27.         if(count==1) System.out.println("分配成功。");
  28.         else{
  29.             System.out.println("分配失败。");
  30.             return false;
  31.         }
  32.         return true;
  33.     }
  34.     //删除课程
  35.     public static boolean Delete(User user) throws Exception{
  36.         System.out.println("请输入教师号：");
  37.         String Tno ="'"+ scanner.next()+"\'";
  38.         user.sql = "select Tno from TC where Tno = "+Tno;
  39.         user.count=user.statement.executeQuery(user.sql);
  40.         if(!user.count.next()){
  41.             System.out.println("教师查询失败");
  42.             return false;
  43.         }
  44.         System.out.println("请输入课程号：");
  45.         Course_no ="\'"+ scanner.next()+"\'";
  46.         user.sql="select Cno from TC where Cno="+Course_no;
  47.         user.count = user.statement.executeQuery(user.sql);
  48.         if(!user.count.next()){
  49.             System.out.println("课程查询失败");
  50.             return false;
  51.         }
  52.         user.sql="delete TC where Tno="+Tno+" and Cno="+Course_no;
  53.         System.out.println(user.sql);
  54.         count=user.statement.executeUpdate(user.sql);
  55.         if(count==1) System.out.println("删除成功");
  56.         else{
  57.             System.out.println("删除失败");
  58.             return false;
  59.         }
  60.         return true;
  61.     }
  62. }

studentsystem：

  1. import java.util.Scanner;
  2. public class StudentSystem {
  3. 	public static void QueryStudentInfor(String id,User user) throws Exception{
  4. 	
  5. 		user.sql = "select * from scoreinfo where id=" + id;
  6. 		user.count = user.statement.executeQuery(user.sql);
  7. 		while(user.count.next()) {
  8. 			System.out.println(user.count.getString("name") 
  9. 					+  " " + user.count.getString("score")
  10. 					+  " " + user.count.getString("Sno")
  11. 					+  " " + user.count.getString("age")
  12. 					+  " " + user.count.getString("grade"));	
  13. 		}
  14. 	}
  15. }

courseFunction：

  1. import java.util.Scanner;
  2.  
  3. public class CourseFunction {
  4.     static private String Course_no;
  5.     static private String Course_name;
  6.     static private int Course_gpa;
  7.     static private String Course_stratyear;
  8.     static private int count;
  9.     static private Scanner scanner = new Scanner(System.in);
  10.  
  11.     public static boolean Insert(User user) throws Exception {
  12.         System.out.println("请输入课程号：");
  13.         Course_no = "\'" + scanner.next() + "\',";
  14.         System.out.println("请输入课程名：");
  15.         Course_name = "\'" + scanner.next() + "\',";
  16.         System.out.println("请输入课程的学分：");
  17.         Course_gpa = scanner.nextInt();
  18.         System.out.println("请输入课程的开设学年：");
  19.         Course_stratyear = ",\'" + scanner.next() + "\'";
  20.         user.sql = "insert into Couser values( " + Course_no + Course_name + Course_gpa + Course_stratyear + ")";
  21.         count = user.statement.executeUpdate(user.sql);
  22.         if (count == 1) {
  23.             System.out.println("插入成功。");
  24.         } else {
  25.             System.out.println("插入失败。");
  26.             return false;
  27.         }
  28.         return true;
  29.     }
  30.  
  31.     public static boolean Select(User user) throws Exception {
  32.         System.out.println("请输入课程号：");
  33.         Course_no = "\'" + scanner.next() + "\'";
  34.         user.sql = "select * from Couser where Couser_no = " + Course_no;
  35.         user.count = user.statement.executeQuery(user.sql);
  36.         if (user.count.next()) System.out.println(user.count.getString("Couser_name") +
  37.                 " 学分：" + user.count.getString("Couser_gpa") +
  38.                 " 开设学年：" + user.count.getString("Couser_stratyear"));
  39.         else {
  40.             System.out.println("查询失败");
  41.             return false;
  42.         }
  43.         return true;
  44.     }
  45. //删除课程
  46.     public static boolean Delete(User user) throws Exception {
  47.         System.out.println("请输入课程号：");
  48.         Course_no = "\'" + scanner.next() + "\'";
  49.         user.sql = "delete Couser where Couser_no=" + Course_no;
  50.         System.out.println(user.sql);
  51.         count = user.statement.executeUpdate(user.sql);
  52.         if (count == 1) System.out.println("删除成功");
  53.         else {
  54.             System.out.println("删除失败");
  55.             return false;
  56.         }
  57.         return true;
  58.     }
  59. //修改课程
  60.     public static boolean Alter(User user) throws Exception {
  61.         System.out.println("请输入课程号：");
  62.         String Course_nofirst = "'" + scanner.next() + "'";
  63.         user.sql = "select * from Couser where Couser_no =" + Course_nofirst;
  64.         try {
  65.             user.count = user.statement.executeQuery(user.sql);
  66.         } catch (Exception e) {
  67.             System.out.println("查询失败。");
  68.             return false;
  69.         }
  70.         if (user.count.next()) {
  71.             Course_no = "\'" + user.count.getString("Couser_no") + "\',";
  72.             Course_name = "\'" + user.count.getString("Couser_name") + "\',";
  73.             Course_gpa = user.count.getInt("Couser_gpa");
  74.             Course_stratyear = "\'" + user.count.getString("Couser_stratyear") + "\'";
  75.         }
  76.         boolean n = true;
  77.         while (n) {
  78.             System.out.println("请输入你要修改的信息的选项\n" +
  79.                     "1.课程号\n2.课程名\n3.学分\n4.开设学年\n5.完成退出");
  80.             int choice = scanner.nextInt();
  81.             switch (choice) {
  82.                 case (1):
  83.                     Course_no = "\'" + scanner.next() + "\',";
  84.                     break;
  85.                 case (2):
  86.                     Course_name = "\'" + scanner.next() + "\',";
  87.                     break;
  88.                 case (3):
  89.                     Course_gpa = scanner.nextInt();
  90.                     break;
  91.                 case (4):
  92.                     Course_stratyear = "\'" + scanner.next() + "\'";
  93.                     break;
  94.                 case (5):
  95.                     n = false;
  96.                     break;
  97.                 default:
  98.                     System.out.println("请输入正确的选项号。");
  99.             }
  100.         }
  101.         user.sql = "update Couser set Couser_no = " + Course_no + " Couser_name = " + Course_name +
  102.                 " Couser_gpa=" + Course_gpa + ", Couser_stratyear=" + Course_stratyear +
  103.                 " where Couser_no = " + Course_nofirst;
  104.         System.out.println(user.sql);
  105.         if (user.statement.executeUpdate(user.sql) == 1) {
  106.             System.out.println("修改成功。");
  107.         } else {
  108.             System.out.println("修改失败。");
  109.             return false;
  110.         }
  111.         return true;
  112.     }
  113. }

ManagerFunction：

  1. import java.util.Scanner;
  2.  
  3. public class ManagerFunction {
  4.     static private String Mno;
  5.     static private String Mname;
  6.     static private String Maccount;
  7.     static private String Mtelephone;
  8.     static private String Mage;
  9.     static private String Msex;
  10.     static private String code;
  11.     static private String Mpower;
  12.     static private Scanner scanner = new Scanner(System.in);
  13.  
  14.     public static boolean Select(User user) throws Exception {
  15.         System.out.println("请选择以下选项：\n1.选择全部管理员的信息。\n2.指定查询管理员的信息。");
  16.         int n = scanner.nextInt();
  17.         if (n == 1) user.sql = "select * from Student";
  18.         else {
  19.             System.out.println("请输入要查询管理员的姓名。");
  20.             String m = scanner.next();
  21.             user.sql = "select * from Administrators where Sname =\'" + m + "\'";
  22.         }
  23.         try {
  24.             user.count = user.statement.executeQuery(user.sql);
  25.         } catch (Exception e) {
  26.             System.out.println("查询失败");
  27.             return false;
  28.         }
  29.         while (user.count.next()) {
  30.             System.out.println("管理员编号：" + user.count.getString("Mno") + " "
  31.                     + user.count.getString("Mname") +
  32.                     " " + user.count.getString("Mage") + " "
  33.                     + user.count.getString("Msex")
  34.                     + user.count.getString("Mpower") +
  35.                     " 管理员账户号：" + user.count.getString("Maccount")
  36.                     + " 密码：" + user.count.getString("code") +
  37.                     " 电话：" + user.count.getString("Mtelephone"));
  38.         }
  39.         return true;
  40.     }
  41. //添加新的管理员
  42.     public static boolean Insert(User user) throws Exception {
  43.         System.out.println("请输入你要插入的管理员编号：");
  44.         while (true) {
  45.             Mno = "\'"+scanner.next()+"\',";
  46.             if (Mno.compareTo("\'\',")==0) System.out.println("管理员号不能为空！");
  47.             else break;
  48.         }
  49.         System.out.println("请输入管理员姓名：");
  50.         while (true) {
  51.             Mname ="\'"+ scanner.next() + "\',";
  52.             if (Mname.compareTo("\'\',")==0) System.out.println("管理员名字不能为空！");
  53.             else break;
  54.         }
  55.         System.out.println("请输入管理员年龄：");
  56.         while(true){
  57.             Mage ="\'"+ scanner.next()+"\',";
  58.             if(Mage.compareTo("\'\',") ==0) System.out.println("管理员年龄不能为空！");
  59.             else break;
  60.         }
  61.         System.out.println("请输入管理员性别：");
  62.         while(true){
  63.             Msex ="\'"+ scanner.next()+"\',";
  64.             if(Msex.compareTo("\'男\',")==0 || Msex.compareTo("\'女\',")==0) break;
  65.             else System.out.println("性别必须为男或者女！");
  66.         }
  67.         System.out.println("请输入管理员的权限：");
  68.         Mpower ="\'"+ scanner.next()+"\',";
  69.  
  70.         System.out.println("请输入管理员账户：");
  71.         Maccount ="\'"+ scanner.next()+"\'";
  72.  
  73.         System.out.println("请输入管理员密码：");
  74.         while(true){
  75.             code ="\'"+ scanner.next()+"\',";
  76.             if(code.compareTo("\'\',")==0) System.out.println("密码不能为空！");
  77.             else break;
  78.         }
  79.         System.out.println("请输入管理员电话：");
  80.         Mtelephone="\'"+ scanner.next()+"\'";
  81.  
  82.         user.sql = "insert into Administrators values ("+Mno+ Mname+Mage+Msex+Mpower+Maccount+code+Mtelephone+")";
  83.         int count = user.statement.executeUpdate(user.sql);
  84.         if(count == 1) System.out.println("插入成功。");
  85.         else {
  86.             System.out.println("插入失败。");
  87.             return false;
  88.         }
  89.         return true;
  90.     }
  91.  
  92. }
  93.  
  94.

TeacherFunction：

  1. import java.util.Scanner;
  2.  
  3. public class TeacherFunction {
  4.     static private String Tno;
  5.     static private String Tname;
  6.     static private String Tage;
  7.     static private String Tsex;
  8.     static private String Tdatatime;
  9.     static private String code;
  10.     static private String Telephone;
  11.     static private Scanner scanner = new Scanner(System.in);
  12.  
  13.  
  14.     //以上代码实验的是选择功能。
  15.     public static boolean Select(User user) throws Exception {
  16.         System.out.println("请选择以下选项：\n1.选择全部教师的信息。\n2.指定查询教师信息。");
  17.         int n = scanner.nextInt();
  18.         if (n == 1) user.sql = "select * from Teacher";
  19.         else {
  20.             System.out.println("请输入要查询教师的姓名。");
  21.             String m = scanner.next();
  22.             user.sql = "select * from Teacher where Tname =\'" + m + "\'";
  23.         }
  24.         try {
  25.             user.count = user.statement.executeQuery(user.sql);
  26.         } catch (Exception e) {
  27.             System.out.println("查询失败");
  28.             return false;
  29.         }
  30.         while(user.count.next()) {
  31.             System.out.println("教师号：" + user.count.getString("Tno") + " " + user.count.getString("Tname") +
  32.                     " " + user.count.getString("Tage") + " " + user.count.getString("Tsex") +
  33.                     " 出生日期：" + user.count.getString("Tdatatime") + " 密码：" + user.count.getString("code") +
  34.                     " 电话：" + user.count.getString("Telephone"));
  35.         }
  36.         return true;
  37.     }
  38.  
  39.     //以下代码实现的是插入功能。
  40.     public static boolean Insert(User user) throws Exception {
  41.         System.out.println("请输入你要插入的教师号：");
  42.         while (true) {
  43.             Tno = "\'"+scanner.next()+"\',";
  44.             if (Tno.compareTo("\'\',")==0) System.out.println("教师号不能为空！");
  45.             else break;
  46.         }
  47.         System.out.println("请输入教师姓名：");
  48.         while (true) {
  49.             Tname ="\'"+ scanner.next() + "\',";
  50.             if (Tname.compareTo("\'\',")==0) System.out.println("教师名字不能为空！");
  51.             else break;
  52.         }
  53.         System.out.println("请输入教师年龄：");
  54.         while(true){
  55.             Tage ="\'"+ scanner.next()+"\',";
  56.             if(Tage.compareTo("\'\',") ==0) System.out.println("教师年龄不能为空！");
  57.             else break;
  58.         }
  59.         System.out.println("请输入教师性别：");
  60.         while(true){
  61.             Tsex ="\'"+ scanner.next()+"\',";
  62.             if(Tsex.compareTo("\'男\',")==0 || Tsex.compareTo("\'女\',")==0) break;
  63.             else System.out.println("性别必须为男或者女！");
  64.         }
  65.         System.out.println("请输入教师的出生日期（输入格式：20030419：");
  66.         Tdatatime ="\'"+ scanner.next()+"\',";
  67.         System.out.println("请输入教师密码：");
  68.         while(true){
  69.             code ="\'"+ scanner.next()+"\',";
  70.             if(code.compareTo("\'\',")==0) System.out.println("密码不能为空！");
  71.             else break;
  72.         }
  73.         System.out.println("请输入教师电话：");
  74.         Telephone ="\'"+ scanner.next()+"\'";
  75.         user.sql = "insert into Teacher values ("+Tno+ Tname+Tage+Tsex+Tdatatime+code+Telephone+")";
  76.         int count = user.statement.executeUpdate(user.sql);
  77.         if(count == 1) System.out.println("插入成功。");
  78.         else {
  79.             System.out.println("插入失败。");
  80.             return false;
  81.         }
  82.         return true;
  83.     }
  84.     //删除教师功能
  85.     public static boolean Delete(User user) throws Exception{
  86.         System.out.println("请提供要删除的教师的教师号。");
  87.         Tno ="\'" + scanner.next()+"\'";
  88.         user.sql = "delete Teacher where Tno ="+Tno;
  89.         int count = user.statement.executeUpdate(user.sql);
  90.         if(count == 1) {
  91.             System.out.println("删除成功。");
  92.         }else{
  93.             System.out.println("删除失败。");
  94.             return false;
  95.         }
  96.         return true;
  97.     }
  98.     //修改教师信息功能
  99.     public static boolean Alter(User user) throws Exception{
  100.         System.out.println("请输入你要修改教师的教师号");
  101.         String Tnofrist ="\'"+scanner.next()+"\'";
  102.         user.sql = "select * from Teacher where Tno =" + Tnofrist;
  103.         try{
  104.             user.count=user.statement.executeQuery(user.sql);
  105.         }catch(Exception e){
  106.             System.out.println("查询失败。");
  107.             return false;
  108.         }
  109.         if(user.count.next()){
  110.             Tno = "\'"+user.count.getString("Tno")+"\',";
  111.             Tname = "\'"+user.count.getString("Tname")+"\',";
  112.             Tage = "\'"+user.count.getString("Tage")+"\',";
  113.             Tsex = "\'"+user.count.getString("Tsex")+"\',";
  114.             Tdatatime = "\'"+user.count.getString("Tdatatime")+"\',";
  115.             code = "\'"+user.count.getString("code")+"\',";
  116.             Telephone = "\'"+user.count.getString("Telephone")+"\'";
  117.         }
  118.  
  119.         boolean n = true;//case(8)处用来跳出循环
  120.         while (n) {
  121.             System.out.println("请输入你要修改的信息的选项\n" +
  122.                     "1.教师号\n2.教师姓名\n3.教师年龄\n4.教师性别\n5.出生日期\n6.密码\n7.电话\n8.完成退出");
  123.             int choice = scanner.nextInt();
  124.             switch (choice){
  125.                 case(1): Tno ="\'"+ scanner.next()+"\',"; break;
  126.                 case(2): Tname ="\'"+ scanner.next()+"\',";break;
  127.                 case(3): Tage = "\'"+scanner.next()+"\',";break;
  128.                 case(4): Tsex = "\'"+scanner.next()+"\',";break;
  129.                 case(5): Tdatatime = "\'"+scanner.next()+"\',";break;
  130.                 case(6): code = "\'"+scanner.next()+"\',";break;
  131.                 case(7): Telephone= "\'"+scanner.next()+"\'";break;
  132.                 case(8): n=false;break;
  133.                 default: System.out.println("请输入正确的选项号。");
  134.             }
  135.         }
  136.         user.sql="update Teacher set Tno = "+Tno+" Tname = "+Tname +
  137.                 " Tage="+Tage+" Tsex="+Tsex+
  138.                 " Tdatatime="+Tdatatime+" code="+code+
  139.                 " Telephone="+Telephone+" where Tno = "+Tnofrist;
  140.         System.out.println(user.sql);
  141.         if(user.statement.executeUpdate(user.sql)==1){
  142.             System.out.println("修改成功。");
  143.         }else{
  144.             System.out.println("修改失败。");
  145.             return false;
  146.         }
  147.         return true;
  148.     }
  149. }

2、数据库建立连接代码部分：

  1. import java.sql.Connection;
  2. import java.sql.DriverManager;
  3. import java.sql.SQLException;
  4. import java.sql.Statement;
  5. import java.sql.ResultSet;
  6. public class User {
  7.     public  String user = "user=zhang;";
  8.     public  String password = "password=123456;";
  9.     public  String databasename = "databaseName=administartor;";
  10.     public  String encrypt = "encrypt=false;";
  11. String connectionUrl = "jdbc:sqlserver://localhost:1433;" + databasename + user + password + encrypt;
  12. 	Statement statement;
  13. 	Connection connection;
  14. 	String sql ="";
  15. 	ResultSet count;
  16. 	public User() {
  17. 		Connection();
  18. 		try {
  19. 		statement = connection.createStatement();
  20. 		System.out.println("statement对象创建成功");
  21. 		}catch(Exception e) {
  22. 			System.out.println("statement对象创建失败");
  23. 		}
  24. 	}
  25. 	public boolean Connection() {
  26. 		try {
  27. 			connection = DriverManager.getConnection(connectionUrl);
  28. 			System.out.println("连接成功");
  29.         }
  30.         catch (SQLException e) {
  31.         	System.out.println("连接失败");
  32.             return false;
  33.         }
  34. 		return true;
  35. 	}
  36. 	public boolean Close() {
  37. 		try {
  38. 			statement.close();
  39. 			connection.close();
  40.         	System.out.println("关闭成功");
  41. 		}catch(Exception e){
  42.         	System.out.println("关闭失败");
  43.         	return false;
  44. 		}
  45. 		return true;
  46. 	}
  47. }

3、Java开发部分：

系统测试：（终端）：

  1. import java.util.Scanner;
  2.  
  3. public class Test4 {
  4. 	public static void Test(String Tno) throws Exception
  5. 	{
  6. 		Scanner scanner = new Scanner(System.in);
  7. 		User user = new User();
  8. 		System.out.println("欢迎来到学生选课系统");
  9. //		System.out.println("请你先输入姓名和密码登陆系统：");
  10. //		System.out.print("请输入你的id：");
  11. //		String id = scanner.next();
  12. //		System.out.print("请输入你的password：");
  13. //		String code = scanner.next();
  14. 		System.out.println("###########################");
  15. 		System.out.println("       1.");
  16. 		System.out.println("       2.");
  17. 		System.out.println("       3.");
  18. 		System.out.println("       4.");
  19. 		System.out.println("       5.");
  20. 		System.out.println("###########################");
  21. 		System.out.println("请选择你要的服务：");
  22. 		String select = scanner.next();
  23. 		while(select != "6")
  24. 		{
  25. 			if(select.equals("1")){
  26. 				System.out.println("--------------------------");
  27. 				caozuo m1 = new caozuo();
  28. 				m1.Query();
  29. 				System.out.println("--------------------------");
  30. 			}
  31. 			else if(select.equals("2")){
  32. 				System.out.println("--------------------------");
  33. 				caozuo m1 = new caozuo();
  34. 				m1.QuerybyTno(Tno);
  35. 				System.out.println("--------------------------");
  36. 			}
  37. 			if(select.equals("3")){
  38. 				System.out.println("--------------------------");
  39. 				caozuo m1 = new caozuo();
  40. 				m1.chaxunrenke();
  41. 				System.out.println("--------------------------");
  42. 			}
  43. 			else if(select.equals("4")){
  44. 				System.out.println("--------------------------");
  45. 				caozuo m1 = new caozuo();
  46. 				m1.findByTno(Tno);
  47. 				System.out.println("--------------------------");
  48. 			}
  49. 			else if(select.equals("5")){
  50. 				System.out.println("--------------------------");
  51. 				caozuo m1 = new caozuo();
  52. 				m1.pingfen();
  53. 				System.out.println("--------------------------");
  54. 			}
  55. 			else if(select.equals("6")){
  56. 				break;
  57. 			}
  58. 			else {
  59. 				System.out.println("输入错误，请重新输入");
  60. 			}
  61. 			
  62. 			System.out.println("请选择你要的服务：");
  63. 			select = scanner.next();
  64. 		}
  65. 		System.out.println("--------------------------");
  66. 		System.out.println("成功退出系统，欢迎再次光临！");
  67. 		System.out.println("--------------------------");
  68. 	}
  69. }

4、gui设计部分：

总页面：（登陆页面）：

  1. import java.awt.*;
  2. import java.util.Random;
  3. import java.util.Scanner;
  4.  
  5. public class kk {
  6.     public static void main(String args[]) throws Exception {
  7.         User user=new User(); /*
  8.         Scanner scanner=new Scanner(System.in);
  9.         System.out.println("欢迎来到学生选课系统");
  10.         System.out.println("即将进入登陆界面，请按提示操作");
  11.         System.out.println("请选择您的身份：");
  12.         System.out.println("1、管理员");
  13.         System.out.println("2、学生");
  14.         System.out.println("3、教师");
  15.         System.out.println("0、退出服务");
  16.         int n=scanner.nextInt();
  17.         System.out.print("请输入你的id：");
  18.         String id = scanner.next();
  19.         System.out.println("请输入你的密码:");
  20.         String code = scanner.next();
  21.         switch (n){
  22.             case(1):
  23.                 if(Log(user,n,id,code));
  24.                 Monitor monitor = new Monitor(user);
  25.                 monitor.Interface();
  26.                 break;
  27.             case(2):
  28.                 if(Log(user,n,id,code));
  29.                 Ztest.StudentInterface();
  30.                 break;
  31.             case(3):
  32.                 if(Log(user,n,id,code));
  33.                 Test1 teacher= new Test1();
  34.                 teacher.MonitorInterface();
  35.                 break;
  36.             case(0):
  37.                 return;
  38.         }
  39.         user.Close();
  40.         System.out.println("--------------------------");
  41.         System.out.println("成功退出系统，欢迎再次光临！");
  42.         System.out.println("--------------------------");*/
  43.         LogIn login = new LogIn();
  44.         login.log();
  45.         
  46.     }
  47.     public static boolean Log(User user,int n,String id,String code) throws Exception{
  48.         switch (n){
  49.             case(1):
  50.                 user.sql="select * from administrators where Sno ='"+id+"' and code = '"+code+"'";
  51.                 user.count=user.statement.executeQuery(user.sql);
  52.                 if(user.count.next()) {
  53.                     System.out.println("登入成功。");
  54.                     return true;
  55.                 }
  56.                 else {
  57.                     System.out.println("登入失败。");
  58.                     return false;
  59.                 }
  60.             case(2):
  61.                 user.sql="select * from Student where Sno ='"+id+"' and code = '"+code+"'";
  62.                 user.count=user.statement.executeQuery(user.sql);
  63.                 if(user.count.next()) {
  64.                     System.out.println("登入成功。");
  65.                     return true;
  66.                 }
  67.                 else {
  68.                     System.out.println("登入失败。");
  69.                     return false;
  70.                 }
  71.             case(3):
  72.                 user.sql="select * from Teacher where Tno ='"+id+"' and code = '"+code+"'";
  73.                 user.count=user.statement.executeQuery(user.sql);
  74.                 if(user.count.next()) {
  75.                     System.out.println("登入成功。");
  76.                     return true;
  77.                 }
  78.                 else {
  79.                     System.out.println("登入失败。");
  80.                     return false;
  81.                 }
  82.         }
  83.         return false;
  84.     }
  85. }

管理系统页面：

  1. import java.awt.*;
  2. import java.util.Random;
  3. import java.util.Scanner;
  4.  
  5. public class kk {
  6.     public static void main(String args[]) throws Exception {
  7.         User user=new User(); /*
  8.         Scanner scanner=new Scanner(System.in);
  9.         System.out.println("欢迎来到学生选课系统");
  10.         System.out.println("即将进入登陆界面，请按提示操作");
  11.         System.out.println("请选择您的身份：");
  12.         System.out.println("1、管理员");
  13.         System.out.println("2、学生");
  14.         System.out.println("3、教师");
  15.         System.out.println("0、退出服务");
  16.         int n=scanner.nextInt();
  17.         System.out.print("请输入你的id：");
  18.         String id = scanner.next();
  19.         System.out.println("请输入你的密码:");
  20.         String code = scanner.next();
  21.         switch (n){
  22.             case(1):
  23.                 if(Log(user,n,id,code));
  24.                 Monitor monitor = new Monitor(user);
  25.                 monitor.Interface();
  26.                 break;
  27.             case(2):
  28.                 if(Log(user,n,id,code));
  29.                 Ztest.StudentInterface();
  30.                 break;
  31.             case(3):
  32.                 if(Log(user,n,id,code));
  33.                 Test1 teacher= new Test1();
  34.                 teacher.MonitorInterface();
  35.                 break;
  36.             case(0):
  37.                 return;
  38.         }
  39.         user.Close();
  40.         System.out.println("--------------------------");
  41.         System.out.println("成功退出系统，欢迎再次光临！");
  42.         System.out.println("--------------------------");*/
  43.         LogIn login = new LogIn();
  44.         login.log();
  45.         
  46.     }
  47.     public static boolean Log(User user,int n,String id,String code) throws Exception{
  48.         switch (n){
  49.             case(1):
  50.                 user.sql="select * from administrators where Sno ='"+id+"' and code = '"+code+"'";
  51.                 user.count=user.statement.executeQuery(user.sql);
  52.                 if(user.count.next()) {
  53.                     System.out.println("登入成功。");
  54.                     return true;
  55.                 }
  56.                 else {
  57.                     System.out.println("登入失败。");
  58.                     return false;
  59.                 }
  60.             case(2):
  61.                 user.sql="select * from Student where Sno ='"+id+"' and code = '"+code+"'";
  62.                 user.count=user.statement.executeQuery(user.sql);
  63.                 if(user.count.next()) {
  64.                     System.out.println("登入成功。");
  65.                     return true;
  66.                 }
  67.                 else {
  68.                     System.out.println("登入失败。");
  69.                     return false;
  70.                 }
  71.             case(3):
  72.                 user.sql="select * from Teacher where Tno ='"+id+"' and code = '"+code+"'";
  73.                 user.count=user.statement.executeQuery(user.sql);
  74.                 if(user.count.next()) {
  75.                     System.out.println("登入成功。");
  76.                     return true;
  77.                 }
  78.                 else {
  79.                     System.out.println("登入失败。");
  80.                     return false;
  81.                 }
  82.         }
  83.         return false;
  84.     }
  85. }

管理员页面：

  1. import javax.swing.*;
  2. import java.awt.*;
  3. import java.awt.event.ActionEvent;
  4. import java.awt.event.ActionListener;
  5.  
  6. public class AdminGUI {
  7.     private JFrame frame;
  8.     private JTextField adminIdField;
  9.     private JTextField nameField;
  10.     private JTextField accountField;
  11.     private JTextField phoneField;
  12.     private JTextField ageField;
  13.     private JTextField genderField;
  14.     private JPasswordField passwordField;
  15.     private JTextField permissionField;
  16.     private JTextArea outputTextArea;
  17.  
  18.     public AdminGUI() {
  19.         frame = new JFrame("管理员界面");
  20.         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  21.         frame.setSize(400, 300);
  22.         frame.setLayout(new BorderLayout());
  23.  
  24.         JPanel inputPanel = new JPanel(new GridLayout(9, 2));
  25.         inputPanel.add(new JLabel("管理员ID:"));
  26.         adminIdField = new JTextField();
  27.         inputPanel.add(adminIdField);
  28.  
  29.         inputPanel.add(new JLabel("姓名:"));
  30.         nameField = new JTextField();
  31.         inputPanel.add(nameField);
  32.  
  33.         inputPanel.add(new JLabel("账号:"));
  34.         accountField = new JTextField();
  35.         inputPanel.add(accountField);
  36.  
  37.         inputPanel.add(new JLabel("电话:"));
  38.         phoneField = new JTextField();
  39.         inputPanel.add(phoneField);
  40.  
  41.         inputPanel.add(new JLabel("年龄:"));
  42.         ageField = new JTextField();
  43.         inputPanel.add(ageField);
  44.  
  45.         inputPanel.add(new JLabel("性别:"));
  46.         genderField = new JTextField();
  47.         inputPanel.add(genderField);
  48.  
  49.         inputPanel.add(new JLabel("密码:"));
  50.         passwordField = new JPasswordField();
  51.         inputPanel.add(passwordField);
  52.  
  53.         inputPanel.add(new JLabel("权限:"));
  54.         permissionField = new JTextField();
  55.         inputPanel.add(permissionField);
  56.  
  57.         JButton viewInfoButton = new JButton("查看学生信息");
  58.         viewInfoButton.addActionListener(new ActionListener() {
  59.             public void actionPerformed(ActionEvent e) {
  60.                 // 在此处编写查看学生信息的逻辑
  61.                 outputTextArea.setText("学生信息：");
  62.             }
  63.         });
  64.         inputPanel.add(viewInfoButton);
  65.  
  66.         JButton addAdminButton = new JButton("添加新管理员");
  67.         addAdminButton.addActionListener(new ActionListener() {
  68.             public void actionPerformed(ActionEvent e) {
  69.                 // 在此处编写添加新管理员的逻辑
  70.                 outputTextArea.setText("已添加新管理员：" + nameField.getText());
  71.             }
  72.         });
  73.         inputPanel.add(addAdminButton);
  74.  
  75.         frame.add(inputPanel, BorderLayout.NORTH);
  76.  
  77.         outputTextArea = new JTextArea();
  78.         frame.add(outputTextArea, BorderLayout.CENTER);
  79.  
  80.         frame.setVisible(true);
  81.     }
  82.  
  83.     public static void main(String[] args) {
  84.         SwingUtilities.invokeLater(new Runnable() {
  85.             public void run() {
  86.                 new AdminGUI();
  87.             }
  88.         });
  89.     }
  90. }

课程管理页面：

  1. import javax.swing.*;
  2. import java.awt.*;
  3. import java.awt.event.ActionEvent;
  4. import java.awt.event.ActionListener;
  5. import java.util.ArrayList;
  6. import java.util.List;
  7.  
  8. public class CourseGUI {
  9.     public JFrame frame;
  10.     private JTextField idTextField;
  11.     private JTextField nameTextField;
  12.     private JTextField creditTextField;
  13.     private JTextField yearTextField;
  14.     private JTextArea outputTextArea;
  15.     private List<Course> courseList;
  16.  
  17.     public static void main(String[] args) {
  18.         EventQueue.invokeLater(() -> {
  19.             try {
  20.                 CourseGUI window = new CourseGUI();
  21.                 window.frame.setVisible(true);
  22.             } catch (Exception e) {
  23.                 e.printStackTrace();
  24.             }
  25.         });
  26.  
  27.     }
  28.  
  29.     public CourseGUI() {
  30.         initialize();
  31.         courseList = new ArrayList<>();
  32.  
  33.     }
  34.  
  35.     private void initialize() {
  36.         frame = new JFrame();
  37.         frame.setBounds(100, 100, 450, 300);
  38.         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  39.         frame.getContentPane().setLayout(null);
  40.  
  41.         JLabel lblNewLabel = new JLabel("课程ID:");
  42.         lblNewLabel.setBounds(10, 11, 64, 14);
  43.         frame.getContentPane().add(lblNewLabel);
  44.  
  45.         idTextField = new JTextField();
  46.         idTextField.setBounds(84, 8, 86, 20);
  47.         frame.getContentPane().add(idTextField);
  48.         idTextField.setColumns(10);
  49.  
  50.         JLabel lblNewLabel_1 = new JLabel("名称:");
  51.         lblNewLabel_1.setBounds(10, 36, 64, 14);
  52.         frame.getContentPane().add(lblNewLabel_1);
  53.  
  54.         nameTextField = new JTextField();
  55.         nameTextField.setBounds(84, 33, 86, 20);
  56.         frame.getContentPane().add(nameTextField);
  57.         nameTextField.setColumns(10);
  58.  
  59.         JLabel lblNewLabel_2 = new JLabel("学分:");
  60.         lblNewLabel_2.setBounds(10, 61, 64, 14);
  61.         frame.getContentPane().add(lblNewLabel_2);
  62.  
  63.         creditTextField = new JTextField();
  64.         creditTextField.setBounds(84, 58, 86, 20);
  65.         frame.getContentPane().add(creditTextField);
  66.         creditTextField.setColumns(10);
  67.  
  68.         JLabel lblNewLabel_3 = new JLabel("开设学年:");
  69.         lblNewLabel_3.setBounds(10, 86, 64, 14);
  70.         frame.getContentPane().add(lblNewLabel_3);
  71.  
  72.         yearTextField = new JTextField();
  73.         yearTextField.setBounds(84, 83, 86, 20);
  74.         frame.getContentPane().add(yearTextField);
  75.         yearTextField.setColumns(10);
  76.  
  77.         JButton addButton = new JButton("添加课程");
  78.         addButton.addActionListener(new ActionListener() {
  79.             public void actionPerformed(ActionEvent e) {
  80.                 addCourse();
  81.             }
  82.         });
  83.         addButton.setBounds(10, 116, 120, 23);
  84.         frame.getContentPane().add(addButton);
  85.  
  86.         JButton queryButton = new JButton("查询课程");
  87.         queryButton.addActionListener(new ActionListener() {
  88.             public void actionPerformed(ActionEvent e) {
  89.                 queryCourse();
  90.             }
  91.         });
  92.         queryButton.setBounds(140, 116, 120, 23);
  93.         frame.getContentPane().add(queryButton);
  94.  
  95.         JButton assignButton = new JButton("分配课程给教师");
  96.         assignButton.addActionListener(new ActionListener() {
  97.             public void actionPerformed(ActionEvent e) {
  98.                 assignCourse();
  99.             }
  100.         });
  101.         assignButton.setBounds(10, 150, 150, 23);
  102.         frame.getContentPane().add(assignButton);
  103.  
  104.         JButton cancelButton = new JButton("取消教师的课程");
  105.         cancelButton.addActionListener(new ActionListener() {
  106.             public void actionPerformed(ActionEvent e) {
  107.                 cancelCourse();
  108.             }
  109.         });
  110.         cancelButton.setBounds(170, 150, 150, 23);
  111.         frame.getContentPane().add(cancelButton);
  112.  
  113.         JScrollPane scrollPane = new JScrollPane();
  114.         scrollPane.setBounds(240, 8, 184, 242);
  115.         frame.getContentPane().add(scrollPane);
  116.  
  117.         outputTextArea = new JTextArea();
  118.         scrollPane.setViewportView(outputTextArea);
  119.     }
  120.  
  121.     private void addCourse() {
  122.         String id = idTextField.getText();
  123.         String name = nameTextField.getText();
  124.         int credit = Integer.parseInt(creditTextField.getText());
  125.         int year = Integer.parseInt(yearTextField.getText());
  126.  
  127.         Course course = new Course(id, name, credit, year);
  128.         courseList.add(course);
  129.  
  130.         outputTextArea.append("课程已添加：" + course.toString() + "\n");
  131.         clearFields();
  132.     }
  133.  
  134.     private void queryCourse() {
  135.         String id = idTextField.getText();
  136.         String name = nameTextField.getText();
  137.         boolean courseFound = false;
  138.  
  139.         for (Course course : courseList) {
  140.             if (course.getId().equals(id) || course.getName().equals(name)) {
  141.                 outputTextArea.append("查询到课程：" + course.toString() + "\n");
  142.                 courseFound = true;
  143.             }
  144.         }
  145.  
  146.         if (!courseFound) {
  147.             outputTextArea.append("找不到指定课程。\n");
  148.         }
  149.  
  150.         clearFields();
  151.     }
  152.  
  153.     private void assignCourse() {
  154.         String id = idTextField.getText();
  155.         String name = nameTextField.getText();
  156.         boolean courseAssigned = false;
  157.  
  158.         for (Course course : courseList) {
  159.             if (course.getId().equals(id) || course.getName().equals(name)) {
  160.                 // Perform teacher assignment logic here
  161.                 outputTextArea.append("已将课程分配给教师：" + course.toString() + "\n");
  162.                 courseAssigned = true;
  163.             }
  164.         }
  165.  
  166.         if (!courseAssigned) {
  167.             outputTextArea.append("找不到指定课程。\n");
  168.         }
  169.  
  170.         clearFields();
  171.     }
  172.  
  173.     private void cancelCourse() {
  174.         String id = idTextField.getText();
  175.         String name = nameTextField.getText();
  176.         boolean courseCanceled = false;
  177.  
  178.         for (Course course : courseList) {
  179.             if (course.getId().equals(id) || course.getName().equals(name)) {
  180.                 // Perform cancellation logic here
  181.                 outputTextArea.append("已取消教师的课程：" + course.toString() + "\n");
  182.                 courseCanceled = true;
  183.             }
  184.         }
  185.  
  186.         if (!courseCanceled) {
  187.             outputTextArea.append("找不到指定课程。\n");
  188.         }
  189.  
  190.         clearFields();
  191.     }
  192.  
  193.     private void clearFields() {
  194.         idTextField.setText("");
  195.         nameTextField.setText("");
  196.         creditTextField.setText("");
  197.         yearTextField.setText("");
  198.     }
  199. }
  200.  
  201. class Course {
  202.     private String id;
  203.     private String name;
  204.     private int credit;
  205.     private int year;
  206.  
  207.     public Course(String id, String name, int credit, int year) {
  208.         this.id = id;
  209.         this.name = name;
  210.         this.credit = credit;
  211.         this.year = year;
  212.     }
  213.  
  214.     public String getId() {
  215.         return id;
  216.     }
  217.  
  218.     public String getName() {
  219.         return name;
  220.     }
  221.  
  222.     public int getCredit() {
  223.         return credit;
  224.     }
  225.  
  226.     public int getYear() {
  227.         return year;
  228.     }
  229.  
  230.     @Override
  231.     public String toString() {
  232.         return "课程ID: " + id + ", 名称: " + name + ", 学分: " + credit + ", 开设学年: " + year;
  233.     }
  234. }

学生管理页面：

  1. import javax.swing.*;
  2. import java.awt.*;
  3. import java.awt.event.ActionEvent;
  4. import java.awt.event.ActionListener;
  5. import java.util.ArrayList;
  6. import java.util.List;
  7.  
  8. public class StudentManagementGUI extends JFrame {
  9.     private JButton addStudentButton;
  10.     private JButton searchStudentButton;
  11.     private JButton deleteStudentButton;
  12.     private JButton updateStudentButton;
  13.  
  14.     private List<Student> studentList;
  15.  
  16.     public StudentManagementGUI() {
  17.         // 设置窗口标题
  18.         setTitle("Student Management System");
  19.  
  20.         // 创建界面组件
  21.         addStudentButton = new JButton("Add Student");
  22.         searchStudentButton = new JButton("Search Student");
  23.         deleteStudentButton = new JButton("Delete Student");
  24.         updateStudentButton = new JButton("Update Student");
  25.  
  26.         // 设置布局管理器
  27.         setLayout(new GridLayout(4, 1));
  28.  
  29.         // 添加组件到界面
  30.         add(addStudentButton);
  31.         add(searchStudentButton);
  32.         add(deleteStudentButton);
  33.         add(updateStudentButton);
  34.  
  35.         // 初始化学生列表
  36.         studentList = new ArrayList<>();
  37.  
  38.         // 添加添加学生按钮的事件监听器
  39.         addStudentButton.addActionListener(new ActionListener() {
  40.             @Override
  41.             public void actionPerformed(ActionEvent e) {
  42.                 AddStudentDialog dialog = new AddStudentDialog(StudentManagementGUI.this);
  43.                 dialog.setVisible(true);
  44.             }
  45.         });
  46.  
  47.         // 添加查询学生按钮的事件监听器
  48.         searchStudentButton.addActionListener(new ActionListener() {
  49.             @Override
  50.             public void actionPerformed(ActionEvent e) {
  51.                 String input = JOptionPane.showInputDialog(StudentManagementGUI.this,
  52.                         "Enter student ID or name:",
  53.                         "Search Student",
  54.                         JOptionPane.PLAIN_MESSAGE);
  55.                 if (input != null && !input.isEmpty()) {
  56.                     List<Student> searchResults = new ArrayList<>();
  57.                     for (Student student : studentList) {
  58.                         if (student.getId().equals(input) || student.getName().equals(input)) {
  59.                             searchResults.add(student);
  60.                         }
  61.                     }
  62.                     if (!searchResults.isEmpty()) {
  63.                         StringBuilder result = new StringBuilder();
  64.                         for (Student student : searchResults) {
  65.                             result.append(student).append("\n");
  66.                         }
  67.                         JOptionPane.showMessageDialog(StudentManagementGUI.this,
  68.                                 result.toString(),
  69.                                 "Search Results",
  70.                                 JOptionPane.INFORMATION_MESSAGE);
  71.                     } else {
  72.                         JOptionPane.showMessageDialog(StudentManagementGUI.this,
  73.                                 "No matching students found.",
  74.                                 "Search Results",
  75.                                 JOptionPane.INFORMATION_MESSAGE);
  76.                     }
  77.                 }
  78.             }
  79.         });
  80.  
  81.         // 添加删除学生按钮的事件监听器
  82.         deleteStudentButton.addActionListener(new ActionListener() {
  83.             @Override
  84.             public void actionPerformed(ActionEvent e) {
  85.                 String id = JOptionPane.showInputDialog(StudentManagementGUI.this,
  86.                         "Enter student ID:",
  87.                         "Delete Student",
  88.                         JOptionPane.PLAIN_MESSAGE);
  89.                 String name = JOptionPane.showInputDialog(StudentManagementGUI.this,
  90.                         "Enter student name:",
  91.                         "Delete Student",
  92.                         JOptionPane.PLAIN_MESSAGE);
  93.                 if (id != null && !id.isEmpty() && name != null && !name.isEmpty()) {
  94.                     boolean deleted = false;
  95.                     for (int i = 0; i < studentList.size(); i++) {
  96.                         Student student = studentList.get(i);
  97.                         if (student.getId().equals(id) && student.getName().equals(name)) {
  98.                             studentList.remove(i);
  99.                             deleted = true;
  100.                             break;
  101.                         }
  102.                     }
  103.                     if (deleted) {
  104.                         JOptionPane.showMessageDialog(StudentManagementGUI.this,
  105.                                 "Student deleted successfully.",
  106.                                 "Delete Student",
  107.                                 JOptionPane.INFORMATION_MESSAGE);
  108.                     } else {
  109.                         JOptionPane.showMessageDialog(StudentManagementGUI.this,
  110.                                 "Student not found.",
  111.                                 "Delete Student",
  112.                                 JOptionPane.ERROR_MESSAGE);
  113.                     }
  114.                 }
  115.             }
  116.         });
  117.  
  118.         // 添加修改学生按钮的事件监听器
  119.         updateStudentButton.addActionListener(new ActionListener() {
  120.             @Override
  121.             public void actionPerformed(ActionEvent e) {
  122.                 String id = JOptionPane.showInputDialog(StudentManagementGUI.this,
  123.                         "Enter student ID or name:",
  124.                         "Update Student",
  125.                         JOptionPane.PLAIN_MESSAGE);
  126.                 if (id != null && !id.isEmpty()) {
  127.                     Student studentToUpdate = null;
  128.                     for (Student student : studentList) {
  129.                         if (student.getId().equals(id) || student.getName().equals(id)) {
  130.                             studentToUpdate = student;
  131.                             break;
  132.                         }
  133.                     }
  134.                     if (studentToUpdate != null) {
  135.                         UpdateStudentDialog dialog = new UpdateStudentDialog(StudentManagementGUI.this, studentToUpdate);
  136.                         dialog.setVisible(true);
  137.                     } else {
  138.                         JOptionPane.showMessageDialog(StudentManagementGUI.this,
  139.                                 "Student not found.",
  140.                                 "Update Student",
  141.                                 JOptionPane.ERROR_MESSAGE);
  142.                     }
  143.                 }
  144.             }
  145.         });
  146.  
  147.         // 设置窗口大小、可见性和关闭操作
  148.         pack();
  149.         setVisible(true);
  150.         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  151.     }
  152.  
  153.     // 添加学生对话框
  154.     private class AddStudentDialog extends JDialog {
  155.         private JTextField idField;
  156.         private JPasswordField passwordField;
  157.         private JTextField nameField;
  158.         private JTextField phoneField;
  159.         private JTextField genderField;
  160.         private JTextField dobField;
  161.         private JTextField classField;
  162.         private JButton addButton;
  163.  
  164.         public AddStudentDialog(JFrame parent) {
  165.             super(parent, "Add Student", true);
  166.  
  167.             // 创建对话框组件
  168.             idField = new JTextField(20);
  169.             passwordField = new JPasswordField(20);
  170.             nameField = new JTextField(20);
  171.             phoneField = new JTextField(20);
  172.             genderField = new JTextField(20);
  173.             dobField = new JTextField(20);
  174.             classField = new JTextField(20);
  175.             addButton = new JButton("Add");
  176.  
  177.             // 设置布局管理器
  178.             setLayout(new GridLayout(8, 2));
  179.  
  180.             // 添加组件到对话框
  181.             add(new JLabel("ID:"));
  182.             add(idField);
  183.             add(new JLabel("Password:"));
  184.             add(passwordField);
  185.             add(new JLabel("Name:"));
  186.             add(nameField);
  187.             add(new JLabel("Phone:"));
  188.             add(phoneField);
  189.             add(new JLabel("Gender:"));
  190.             add(genderField);
  191.             add(new JLabel("DOB:"));
  192.             add(dobField);
  193.             add(new JLabel("Class:"));
  194.             add(classField);
  195.             add(new JLabel());
  196.             add(addButton);
  197.  
  198.             // 添加添加按钮的事件监听器
  199.             addButton.addActionListener(new ActionListener() {
  200.                 @Override
  201.                 public void actionPerformed(ActionEvent e) {
  202.                     // 从输入框获取学生信息
  203.                     String id = idField.getText();
  204.                     String password = new String(passwordField.getPassword());
  205.                     String name = nameField.getText();
  206.                     String phone = phoneField.getText();
  207.                     String gender = genderField.getText();
  208.                     String dob = dobField.getText();
  209.                     String className = classField.getText();
  210.  
  211.                     // 创建学生对象并添加到学生列表
  212.                     Student newStudent = new Student(id, password, name, phone, gender, dob, className);
  213.                     studentList.add(newStudent);
  214.  
  215.                     // 清空输入框
  216.                     idField.setText("");
  217.                     passwordField.setText("");
  218.                     nameField.setText("");
  219.                     phoneField.setText("");
  220.                     genderField.setText("");
  221.                     dobField.setText("");
  222.                     classField.setText("");
  223.  
  224.                     // 关闭对话框
  225.                     dispose();
  226.  
  227.                     JOptionPane.showMessageDialog(StudentManagementGUI.this,
  228.                             "Student added successfully.",
  229.                             "Add Student",
  230.                             JOptionPane.INFORMATION_MESSAGE);
  231.                 }
  232.             });
  233.  
  234.             // 设置对话框大小、可见性和关闭操作
  235.             pack();
  236.             setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
  237.             setLocationRelativeTo(parent);
  238.         }
  239.     }
  240.  
  241.     // 修改学生对话框
  242.     private class UpdateStudentDialog extends JDialog {
  243.         private JTextField idField;
  244.         private JTextField passwordField;
  245.         private JTextField nameField;
  246.         private JTextField phoneField;
  247.         private JTextField genderField;
  248.         private JTextField dobField;
  249.         private JTextField classField;
  250.         private JButton updateButton;
  251.  
  252.         public UpdateStudentDialog(JFrame parent, Student student) {
  253.             super(parent, "Update Student", true);
  254.  
  255.             // 创建对话框组件
  256.             idField = new JTextField(student.getId(), 20);
  257.             passwordField = new JTextField(student.getPassword(), 20);
  258.             nameField = new JTextField(student.getName(), 20);
  259.             phoneField = new JTextField(student.getPhone(), 20);
  260.             genderField = new JTextField(student.getGender(), 20);
  261.             dobField = new JTextField(student.getDob(), 20);
  262.             classField = new JTextField(student.getClassName(), 20);
  263.             updateButton = new JButton("Update");
  264.  
  265.             // 设置布局管理器
  266.             setLayout(new GridLayout(8, 2));
  267.  
  268.             // 添加组件到对话框
  269.             add(new JLabel("ID:"));
  270.             add(idField);
  271.             add(new JLabel("Password:"));
  272.             add(passwordField);
  273.             add(new JLabel("Name:"));
  274.             add(nameField);
  275.             add(new JLabel("Phone:"));
  276.             add(phoneField);
  277.             add(new JLabel("Gender:"));
  278.             add(genderField);
  279.             add(new JLabel("DOB:"));
  280.             add(dobField);
  281.             add(new JLabel("Class:"));
  282.             add(classField);
  283.             add(new JLabel());
  284.             add(updateButton);
  285.  
  286.             // 添加更新按钮的事件监听器
  287.             updateButton.addActionListener(new ActionListener() {
  288.                 @Override
  289.                 public void actionPerformed(ActionEvent e) {
  290.                     // 获取修改后的学生信息
  291.                     String id = idField.getText();
  292.                     String password = passwordField.getText();
  293.                     String name = nameField.getText();
  294.                     String phone = phoneField.getText();
  295.                     String gender = genderField.getText();
  296.                     String dob = dobField.getText();
  297.                     String className = classField.getText();
  298.  
  299.                     // 更新学生信息
  300.                     student.setId(id);
  301.                     student.setPassword(password);
  302.                     student.setName(name);
  303.                     student.setPhone(phone);
  304.                     student.setGender(gender);
  305.                     student.setDob(dob);
  306.                     student.setClassName(className);
  307.  
  308.                     // 关闭对话框
  309.                     dispose();
  310.  
  311.                     JOptionPane.showMessageDialog(StudentManagementGUI.this,
  312.                             "Student updated successfully.",
  313.                             "Update Student",
  314.                             JOptionPane.INFORMATION_MESSAGE);
  315.                 }
  316.             });
  317.  
  318.             // 设置对话框大小、可见性和关闭操作
  319.             pack();
  320.             setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
  321.             setLocationRelativeTo(parent);
  322.         }
  323.     }
  324.  
  325.     public static void main(String[] args) {
  326.         SwingUtilities.invokeLater(new Runnable() {
  327.             @Override
  328.             public void run() {
  329.                 new StudentManagementGUI();
  330.             }
  331.         });
  332.     }
  333. }
  334.  
  335. // 学生类
  336. class Student {
  337.     private String id;
  338.     private String password;
  339.     private String name;
  340.     private String phone;
  341.     private String gender;
  342.     private String dob;
  343.     private String className;
  344.  
  345.     public Student(String id, String password, String name, String phone, String gender, String dob, String className) {
  346.         this.id = id;
  347.         this.password = password;
  348.         this.name = name;
  349.         this.phone = phone;
  350.         this.gender = gender;
  351.         this.dob = dob;
  352.         this.className = className;
  353.     }
  354.  
  355.     // Getter和Setter方法
  356.  
  357.     public String getId() {
  358.         return id;
  359.     }
  360.  
  361.     public void setId(String id) {
  362.         this.id = id;
  363.     }
  364.  
  365.     public String getPassword() {
  366.         return password;
  367.     }
  368.  
  369.     public void setPassword(String password) {
  370.         this.password = password;
  371.     }
  372.  
  373.     public String getName() {
  374.         return name;
  375.     }
  376.  
  377.     public void setName(String name) {
  378.         this.name = name;
  379.     }
  380.  
  381.     public String getPhone() {
  382.         return phone;
  383.     }
  384.  
  385.     public void setPhone(String phone) {
  386.         this.phone = phone;
  387.     }
  388.  
  389.     public String getGender() {
  390.         return gender;
  391.     }
  392.  
  393.     public void setGender(String gender) {
  394.         this.gender = gender;
  395.     }
  396.  
  397.     public String getDob() {
  398.         return dob;
  399.     }
  400.  
  401.     public void setDob(String dob) {
  402.         this.dob = dob;
  403.     }
  404.  
  405.     public String getClassName() {
  406.         return className;
  407.     }
  408.  
  409.     public void setClassName(String className) {
  410.         this.className = className;
  411.     }
  412.  
  413.     // 重写toString()方法，用于显示学生信息
  414.     @Override
  415.     public String toString() {
  416.         return "Student{" +
  417.                 "id='" + id + '\'' +
  418.                 ", password='" + password + '\'' +
  419.                 ", name='" + name + '\'' +
  420.                 ", phone='" + phone + '\'' +
  421.                 ", gender='" + gender + '\'' +
  422.                 ", dob='" + dob + '\'' +
  423.                 ", className='" + className + '\'' +
  424.                 '}';
  425.     }
  426. }

教师管理页面：

  1. import javax.swing.*;
  2. import java.awt.*;
  3. import java.awt.event.ActionEvent;
  4. import java.awt.event.ActionListener;
  5. import java.util.ArrayList;
  6. import java.util.List;
  7.  
  8. public class TeacherGUI {
  9.     public JFrame frame;
  10.     private JTextField idTextField;
  11.     private JTextField nameTextField;
  12.     private JTextField passwordTextField;
  13.     private JTextField phoneTextField;
  14.     private JTextArea outputTextArea;
  15.     private List<Teacher> teacherList;
  16.  
  17.     public static void main(String[] args) {
  18.         EventQueue.invokeLater(() -> {
  19.             try {
  20.                 TeacherGUI window = new TeacherGUI();
  21.                 window.frame.setVisible(true);
  22.             } catch (Exception e) {
  23.                 e.printStackTrace();
  24.             }
  25.         });
  26.     }
  27.  
  28.     public TeacherGUI() {
  29.         initialize();
  30.         teacherList = new ArrayList<>();
  31.     }
  32.  
  33.     private void initialize() {
  34.         frame = new JFrame();
  35.         frame.setBounds(100, 100, 450, 300);
  36.         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  37.         frame.getContentPane().setLayout(null);
  38.  
  39.         JLabel lblNewLabel = new JLabel("教师ID:");
  40.         lblNewLabel.setBounds(10, 11, 64, 14);
  41.         frame.getContentPane().add(lblNewLabel);
  42.  
  43.         idTextField = new JTextField();
  44.         idTextField.setBounds(84, 8, 86, 20);
  45.         frame.getContentPane().add(idTextField);
  46.         idTextField.setColumns(10);
  47.  
  48.         JLabel lblNewLabel_1 = new JLabel("姓名:");
  49.         lblNewLabel_1.setBounds(10, 36, 64, 14);
  50.         frame.getContentPane().add(lblNewLabel_1);
  51.  
  52.         nameTextField = new JTextField();
  53.         nameTextField.setBounds(84, 33, 86, 20);
  54.         frame.getContentPane().add(nameTextField);
  55.         nameTextField.setColumns(10);
  56.  
  57.         JLabel lblNewLabel_2 = new JLabel("密码:");
  58.         lblNewLabel_2.setBounds(10, 61, 64, 14);
  59.         frame.getContentPane().add(lblNewLabel_2);
  60.  
  61.         passwordTextField = new JTextField();
  62.         passwordTextField.setBounds(84, 58, 86, 20);
  63.         frame.getContentPane().add(passwordTextField);
  64.         passwordTextField.setColumns(10);
  65.  
  66.         JLabel lblNewLabel_3 = new JLabel("电话:");
  67.         lblNewLabel_3.setBounds(10, 86, 64, 14);
  68.         frame.getContentPane().add(lblNewLabel_3);
  69.  
  70.         phoneTextField = new JTextField();
  71.         phoneTextField.setBounds(84, 83, 86, 20);
  72.         frame.getContentPane().add(phoneTextField);
  73.         phoneTextField.setColumns(10);
  74.  
  75.         JButton addButton = new JButton("添加教师");
  76.         addButton.addActionListener(new ActionListener() {
  77.             public void actionPerformed(ActionEvent e) {
  78.                 addTeacher();
  79.             }
  80.         });
  81.         addButton.setBounds(10, 116, 120, 23);
  82.         frame.getContentPane().add(addButton);
  83.  
  84.         JButton getAllButton = new JButton("获取所有教师信息");
  85.         getAllButton.addActionListener(new ActionListener() {
  86.             public void actionPerformed(ActionEvent e) {
  87.                 getAllTeachers();
  88.             }
  89.         });
  90.         getAllButton.setBounds(140, 116, 150, 23);
  91.         frame.getContentPane().add(getAllButton);
  92.  
  93.         JButton deleteButton = new JButton("删除指定教师信息");
  94.         deleteButton.addActionListener(new ActionListener() {
  95.             public void actionPerformed(ActionEvent e) {
  96.                 deleteTeacher();
  97.             }
  98.         });
  99.         deleteButton.setBounds(10, 150, 150, 23);
  100.         frame.getContentPane().add(deleteButton);
  101.  
  102.         JButton updateButton = new JButton("修改指定教师信息");
  103.         updateButton.addActionListener(new ActionListener() {
  104.             public void actionPerformed(ActionEvent e) {
  105.                 updateTeacher();
  106.             }
  107.         });
  108.         updateButton.setBounds(170, 150, 150, 23);
  109.         frame.getContentPane().add(updateButton);
  110.  
  111.         JScrollPane scrollPane = new JScrollPane();
  112.         scrollPane.setBounds(240, 8, 184, 242);
  113.         frame.getContentPane().add(scrollPane);
  114.  
  115.         outputTextArea = new JTextArea();
  116.         scrollPane.setViewportView(outputTextArea);
  117.     }
  118.  
  119.     private void addTeacher() {
  120.         String id = idTextField.getText();
  121.         String name = nameTextField.getText();
  122.         String password = passwordTextField.getText();
  123.         String phone = phoneTextField.getText();
  124.  
  125.         Teacher teacher = new Teacher(id, name, password, phone);
  126.         teacherList.add(teacher);
  127.  
  128.         outputTextArea.append("教师已添加：" + teacher.toString() + "\n");
  129.         clearFields();
  130.     }
  131.  
  132.     private void getAllTeachers() {
  133.         if (teacherList.isEmpty()) {
  134.             outputTextArea.setText("没有教师信息。\n");
  135.         } else {
  136.             outputTextArea.setText("所有教师信息：\n");
  137.             for (Teacher teacher : teacherList) {
  138.                 outputTextArea.append(teacher.toString() + "\n");
  139.             }
  140.         }
  141.     }
  142.  
  143.     private void deleteTeacher() {
  144.         String id = idTextField.getText();
  145.         boolean teacherRemoved = false;
  146.  
  147.         for (Teacher teacher : teacherList) {
  148.             if (teacher.getId().equals(id)) {
  149.                 teacherList.remove(teacher);
  150.                 outputTextArea.append("教师已删除：" + teacher.toString() + "\n");
  151.                 teacherRemoved = true;
  152.                 break;
  153.             }
  154.         }
  155.  
  156.         if (!teacherRemoved) {
  157.             outputTextArea.append("找不到指定教师。\n");
  158.         }
  159.  
  160.         clearFields();
  161.     }
  162.  
  163.     private void updateTeacher() {
  164.         String id = idTextField.getText();
  165.         String name = nameTextField.getText();
  166.         String password = passwordTextField.getText();
  167.         String phone = phoneTextField.getText();
  168.         boolean teacherUpdated = false;
  169.  
  170.         for (Teacher teacher : teacherList) {
  171.             if (teacher.getId().equals(id)) {
  172.                 teacher.setName(name);
  173.                 teacher.setPassword(password);
  174.                 teacher.setPhone(phone);
  175.                 outputTextArea.append("教师已更新：" + teacher.toString() + "\n");
  176.                 teacherUpdated = true;
  177.                 break;
  178.             }
  179.         }
  180.  
  181.         if (!teacherUpdated) {
  182.             outputTextArea.append("找不到指定教师。\n");
  183.         }
  184.  
  185.         clearFields();
  186.     }
  187.  
  188.     private void clearFields() {
  189.         idTextField.setText("");
  190.         nameTextField.setText("");
  191.         passwordTextField.setText("");
  192.         phoneTextField.setText("");
  193.     }
  194. }
  195.  
  196. class Teacher {
  197.     private String id;
  198.     private String name;
  199.     private String password;
  200.     private String phone;
  201.  
  202.     public Teacher(String id, String name, String password, String phone) {
  203.         this.id = id;
  204.         this.name = name;
  205.         this.password = password;
  206.         this.phone = phone;
  207.     }
  208.  
  209.     public String getId() {
  210.         return id;
  211.     }
  212.  
  213.     public String getName() {
  214.         return name;
  215.     }
  216.  
  217.     public void setName(String name) {
  218.         this.name = name;
  219.     }
  220.  
  221.     public String getPassword() {
  222.         return password;
  223.     }
  224.  
  225.     public void setPassword(String password) {
  226.         this.password = password;
  227.     }
  228.  
  229.     public String getPhone() {
  230.         return phone;
  231.     }
  232.  
  233.     public void setPhone(String phone) {
  234.         this.phone = phone;
  235.     }
  236.  
  237.     @Override
  238.     public String toString() {
  239.         return "教师ID: " + id + ", 姓名: " + name + ", 密码: " + password + ", 电话: " + phone;
  240.     }
  241. }

等等页面我们都已开发。后续代码可以私聊我们领取。

5、数据库数据导入部分：

三、结果演示

答：

图一：管理系统界面的展示

 

 

 

 

 

 

 

  

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