Spring的纯注解配置

1.JDBC配置:

jdbc配置：

<context:property-placeholder location="classpath:db.properties">
</context:property-placeholder>
<!--数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" 
      destroy-method="close">
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />
    <property name="driverClassName" value="${jdbc.driver}" />
    <property name="maxActive" value="10" />
    <property name="minIdle" value="5" />
</bean>

jdbc的纯注解配置：

JdbcConfig:

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.PropertySource;
import javax.sql.DataSource;
 
@PropertySource("classpath:db.properties")
public class JdbcConfig {
    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.username}")
    private String userName;
    @Value("${jdbc.password}")
    private String password;
 
    @Bean("dataSource")
    public DataSource getDatasource() {
        DruidDataSource ds = new DruidDataSource();
        ds.setDriverClassName(driver);
        ds.setUrl(url);
        ds.setUsername(userName);
        ds.setPassword(password);
        return ds;
    }
}

2.mybatis配置

mybatis配置：

 <!--sqlSession工厂-->
    <bean id="sessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="typeAliasesPackage" value="com.by.pojo"></property>
    </bean>
 
    <!--配置MapperScan扫描mapper接口，并把生成的代理类交给spring去管理-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.by.mapper"></property>
        <property name="sqlSessionFactoryBeanName" value="sessionFactoryBean"></property>
    </bean>

mybatis的纯注解配置：

MybatisConfig:

 
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;
 
import javax.sql.DataSource;
 
public class MyBatisConfig {
    @Bean
    public SqlSessionFactoryBean getSqlSessionFactoryBean(
             DataSource dataSource){
        SqlSessionFactoryBean ssfb=new SqlSessionFactoryBean();
        ssfb.setDataSource(dataSource);
        ssfb.setTypeAliasesPackage("com.by.pojo");
        return ssfb;
    }
    @Bean
    public MapperScannerConfigurer getMapperScannerConfigurer(){
        MapperScannerConfigurer msc=new MapperScannerConfigurer();
        msc.setBasePackage("com.by.mapper");
        return msc;
    }
}

3.transactional配置

transactional配置：

  <bean id="transactionManager" 
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 开启spring对注解事务的支持 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>

transactional的纯注解配置：

TxConfig:

import org.springframework.context.annotation.Bean;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import javax.sql.DataSource;
 
public class TxConfig {
 
    @Bean
    public PlatformTransactionManager transactionManager(DataSource dataSource){
        DataSourceTransactionManager ds = new DataSourceTransactionManager();
        ds.setDataSource(dataSource);
        return ds;
    }
}

4.service配置

service配置：

  <!--扫描service-->
    <context:component-scan base-package="com.by.service"></context:component-scan>

service的纯注0解配置：

ServiceConfig:

import org.springframework.context.annotation.ComponentScan;
 
@ComponentScan("com.by.service")   //等同<context:component-scan base-package="com.by"/>`
public class ServiceConfig {
 
 
}

5.springmvc配置

springmvc配置：

<!--配置springmvc要扫描的包-->
    <context:component-scan base-package="com.by.controller,com.by.exception"></context:component-scan>
 
    <!--开启注解驱动：配置handlerMapping和handlerAdapter-->
    <mvc:annotation-driven conversion-service="cs"></mvc:annotation-driven>
 
    <!--配置日期转换器-->
    <bean id="cs" class="org.springframework.context.support.ConversionServiceFactoryBean">
        <property name="converters">
            <set>
                <bean class="com.by.converter.MyDateConverter"></bean>
            </set>
        </property>
    </bean>
 
    <!--配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
 
    <!--配置文件上传解析器-->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="5242880" />
        <property name="defaultEncoding" value="UTF-8" />
    </bean>
    <!--资源映射器：直接放行无须dispatcherServlet去处理-->
    <mvc:resources location="/head/" mapping="/head/**"/>
 
    <!--配置拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/account/**"/>
            <mvc:exclude-mapping path="/account/login"></mvc:exclude-mapping>
            <bean class="com.by.interceptor.LoginInterceptor"></bean>
        </mvc:interceptor>
    </mvc:interceptors>

springmvcl的纯注解配置：

SpringMVCConfig:

import com.by.converter.MyDateConverter;
import com.by.interceptor.LoginInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
 
@Configuration
//等同于<context:component-scan base-package="com.by.controller>
@ComponentScan("com.by.controller")
//等同于<mvc:annotation-driven></mvc:annotation-driven>
@EnableWebMvc
public class SpringMVCConfig implements WebMvcConfigurer {
 
    @Bean
    public InternalResourceViewResolver internalResourceViewResolver(){
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/pages/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }
 
    @Bean
    public CommonsMultipartResolver commonsMultipartResolver(){
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
        multipartResolver.setMaxUploadSize(5242880);
        multipartResolver.setDefaultEncoding("UTF-8");
        return multipartResolver;
    }
 
    //配置日期转换器
    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new DateConverter());
    }
 
    //配置拦截器
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LoginInterceptor()).addPathPatterns("/**").excludePathPatterns("/user/**");
    }
 
    //配置静态资源的访问路径和位置
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/head/**").addResourceLocations("/head/");
    }
}

6.servlet配置

servlet配置：

<!--配置监听器：监听tomcat启动,加载spring配置文件-->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext-*.xml</param-value>
</context-param>
<listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
</listener>
 
<!--前端控制器-->
<servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
<!--过滤器-->
<filter>
    <filter-name>CharacterEncodingFilter</filter-name>
    <filter-class>
        org.springframework.web.filter.CharacterEncodingFilter
    </filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

servlet的纯注解配置：

WebConfig:

import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
 
import javax.servlet.Filter;
 
/**
 * 当类扩展了AbstractAnnotationConfigDispatcherServletlnitializer并将其部署到 Servlet容器时，
 * 容器会自动发现它，并用它来配置Servlet环境
 */
public class WebConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
 
    //设置Spring对应的配置类
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{SpringConfig.class};
    }
 
    //设置SpringMVC对应的配置类，加载springmvc.xml
    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{SpringMVCConfig.class};
    }
 
    //设置dispatchServet匹配的url
    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
 
    //配置过滤器，处理post请求中文乱码过滤器
    @Override
    protected Filter[] getServletFilters() {
        CharacterEncodingFilter filter = new CharacterEncodingFilter();
        filter.setEncoding("utf-8");
        return new Filter[]{filter};
    }
}