之前在使用Spring的时候我们使用的是ApplicationContext接口来获取spring容器
ApplicationContext act = new ClassPathXmlApplicationContext("applicationContext.xml");改进：改为像SpringMVC一样在配置文件中创建容器
配置web.xml <!-- spring --> <!-- needed for ContextLoaderListener --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring.xml</param-value> </context-param> <!-- Bootstraps the root web application context before servlet initialization --> <!-- 通过监听器来创建Spring容器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- springmvc前端控制器 --> <!-- The front controller of this Spring Web application, responsible for handling all application requests --> <servlet> <servlet-name>springDispatcherServlet</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> <!-- Map all requests to the DispatcherServlet for handling --> <servlet-mapping> <servlet-name>springDispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>之前我们是将所有的注解扫描都加载到Spring或SpringMVC中，现在吧两个整合到一起，我们需要进行一下分工
spring.xml: dao,service,数据源,声明式事务,包扫描…springmvc.xml: handler（controller）,拦截器,包扫描,视图解析器Spring
<!-- 包扫描 --> <context:component-scan base-package="com.baidu.ss"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 引入外部文件 --> <context:property-placeholder location="classpath:db.properties"/> <!-- 管理数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="username" value="${db.username}"></property> <property name="password" value="${db.password}"></property> <property name="url" value="${db.url}"></property> <property name="driverClassName" value="${db.driver}"></property> </bean> <!-- 配置事务管理器: 管理事务 --> <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 启用注解事务管理 --> <tx:annotation-driven transaction-manager="dataSourceTransactionManager"/>SpringMVC
<!-- 包扫描 --> <context:component-scan base-package="com.baidu.ss" annotation-config="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"></property> <property name="suffix" value=".jsp"></property> </bean> <mvc:default-servlet-handler /><!-- 使用默认的servlet处理静态资源访问 --> <mvc:annotation-driven /><!-- 启用注解驱动 --> <!-- 文件上传解析器 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="utf-8"></property> <property name="maxUploadSize" value="1024000"></property> <property name="maxInMemorySize" value="1024000"></property> </bean> <!-- 拦截器 --> <mvc:interceptors> <!-- 声明自定义拦截器 --> <bean id="firstHandlerInterceptor" class="com.baidu.springmvc.interceptors.FirstHandlerInterceptor"></bean> <bean id="secondHandlerInterceptor" class="com.baidu.springmvc.interceptors.SecondHandlerInterceptor"></bean> </mvc:interceptors>