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在很多场景中我们需要验证时间日期的是否属于正确的格式,验证时间是否符合常规的。
- String date = "2020-01-25 12:36:45";
- System.out.println("date "+isLegalDate(date.length(),date,"yyyy-MM-dd HH:mm:ss"));
-
- String yearMonthday = "2020-01-01";
- System.out.println("yearMonthday: "+isLegalDate(yearMonthday.length(),yearMonthday,"yyyy-MM-dd"));
- String yearMonth = "2020-02";
- System.out.println("yearMonth: "+isLegalDate(yearMonth.length(),yearMonth,"yyyy-MM"));
- String year = "2020";
- System.out.println("year: "+isLegalDate(year.length(),year,"yyyy"));
- String hms = "12:36:89";
- System.out.println("hms: "+isLegalDate(hms.length(),hms,"HH:mm:ss"));
- package com.shucha.deveiface.biz.test;
-
- import java.text.DateFormat;
- import java.text.SimpleDateFormat;
- import java.util.Date;
-
- /**
- * @author tqf
- * @Description 时间格式校验
- * @Version 1.0
- * @since 2020-09-15 16:49
- */
- public class IsLegalDate {
-
-
- public static void main(String[] args) {
- //1、验证 yyyy-MM-dd HH:mm:dd 格式的日期
- String date = "2020-01-25 12:36:45";
- System.out.println("date "+isLegalDate(date.length(),date,"yyyy-MM-dd HH:mm:ss"));
-
- //2、验证 yyyy-MM-dd 格式的日期
- String yearMonthday = "2020-01-01";
- System.out.println("yearMonthday: "+isLegalDate(yearMonthday.length(),yearMonthday,"yyyy-MM-dd"));
-
- //3、验证 yyyy-MM 格式的日期
- String yearMonth = "2020-02";
- System.out.println("yearMonth: "+isLegalDate(yearMonth.length(),yearMonth,"yyyy-MM"));
-
- //4、验证 yyyy 格式的日期
- String year = "2020";
- System.out.println("year: "+isLegalDate(year.length(),year,"yyyy"));
-
- //5、验证 HH:mm:ss 格式的日期
- String hms = "12:36:89";
- System.out.println("hms: "+isLegalDate(hms.length(),hms,"HH:mm:ss"));
-
-
-
-
- }
-
- /**
- * 根据时间 和时间格式 校验是否正确
- * @param length 校验的长度
- * @param sDate 校验的日期
- * @param format 校验的格式
- * @return
- */
- public static boolean isLegalDate(int length, String sDate,String format) {
- int legalLen = length;
- if ((sDate == null) || (sDate.length() != legalLen)) {
- return false;
- }
- DateFormat formatter = new SimpleDateFormat(format);
- try {
- Date date = formatter.parse(sDate);
- return sDate.equals(formatter.format(date));
- } catch (Exception e) {
- return false;
- }
- }
- }
下面是一个时间验证之后的截图
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