Spring与MVC整合

Spring与SpringMVC整合

目的:分工明确
SpringMVC的配置文件就来配置和网站转发逻辑以及网站功能相关的(视图解析器,文件上传解析器,支持ajax…)
Spring的配置文件来配置和业务有关的(事务控制、数据源 …)

1、当有多个xml文件的时候,若想同时起作用。(合并配置文件)

(这种方式相当于进行了合并,等于只要一个ioc容器)

例如:在springmvc.xml文件中可以加上以下代码,就可以让spring.xml文件配置生效。

(springMVC和Spring分容器)

在web.xml文件配置前端控制器的时候,加上多个 context-param 的value

 //基本配置
 <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*:/applicationContext-mvc.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>
  //多个xml文件新增
 <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
			classpath*:/applicationContext.xml
			classpath*:/applicationContext-shiro.xml
    </param-value>
  </context-param>

2、SpringMVC与Spring在包扫描的配置

SpringMVC.xml文件只扫描Controller

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
	<!-- SpringMVC只扫描控制器 ,禁用默认规则-->
	<context:component-scan base-package="com.example" use-default-filters="false">
		<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>

	<!-- 扫静态资源 -->
	<mvc:default-servlet-handler/>
	<!-- 扫动态资源 -->
	<mvc:annotation-driven></mvc:annotation-driven>

    <!-<mvc:resources location="/resources/" mapping="/resources/**"/>  -->

	<!-- 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>
	<!-- 文件上传解析器 -->
	<!-- id必须是multipartResolver -->
	<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<property name="defaultEncoding" value="utf-8"></property>
		<!-- 最大上传20M -->
		<property name="maxUploadSize" value="#{1024*1024*20}"></property>
	</bean>
</beans>

Spring.xml文件扫描出了Controller以外的

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
	xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
	<!-- Spring不扫描Controller扫描其他所有.不需要禁用默认规则 -->
	<context:component-scan base-package="com.example">
		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>
	<!-- 1、导入外部配置文件 -->
	<!-- <context:property-placeholder location="classpath:datasource.properties"/> -->
	<!-- 2、配数据源 -->
	
	<bean id= "dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<!-- <property name="user" value="${username}"></property>
		<property name="password" value="${password}"></property>
		<property name="driverClass" value="${driver}"></property>
		<property name="jdbcUrl" value="${jdbcurl}"></property>
		<property name="maxPoolSize" value="${maxPoolSize}"></property>
		<property name="minPoolSize" value="${minPoolSize}"></property> -->
		<property name="user" value="root"></property>
		<property name="password" value="123456"></property>
		<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
		<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/mybatis"></property>
		<property name="maxPoolSize" value="20"></property>
		<property name="minPoolSize" value="5"></property>
	</bean>
	<!-- 3、配置jdbcTemplate操作数据库,这里交给mybatis配-->
	<!-- 配置mybatis操作数据库 -->
	<bean class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 可以根据配置文件得到sqlSessionFactory -->
		<!--configLocation:指定mybatis配置文件位置  -->
		<property name="configLocation" value="classpath:mybatis/mybatis_config.xml"></property>
		<!--dataSource:指定mybatis配置文件用哪个dataSource  -->
		<property name="dataSource" ref="dataSource"></property>
		<!-- mapperLocations:指定xml文件映射位置,mapper包下的所有xml-->
		<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
	</bean>
	<!-- 我们要把每一个接口的实现加入到ioc容器中 -->
	<!-- <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		指定dao接口所在的包
		这样的话,对于dao的对象才能用@Autowired自动注入
		<property name="basePackage" value="com.example.dao"></property>
	</bean> -->
	<mybatis-spring:scan base-package="com.example.dao"/>
	<!-- 4、配置事务控制。配置事务管理器,让其控制数据源里的连接的关闭与提交 -->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<!-- 是哪个数据源 -->
		<property name="dataSource" ref="dataSource"></property>
	</bean>
	<!-- 5、基于xml配置。哪些方法切入宿务写切入点表达式 -->
	<aop:config>
		<!-- 配置切入点表达式 -->
		<!-- com.example.service:包里的任意类的任意方法的任意参数,任意返回值 -->
		<!-- id为这个切面的唯一标识 -->
		<aop:pointcut expression="execution(* com.example.service.*.*(..))" id="txPoint"/>
		<!-- advice-ref:引用哪个事务增强 -->
		<aop:advisor advice-ref="myAdvice" pointcut-ref="txPoint"/>
	</aop:config>
	<!-- 6、配置事务增强、事务属性、事务建议 
		transaction-manager="transactionManager"
		:指定是哪个事务管理器
	-->
	<tx:advice id="myAdvice" transaction-manager="transactionManager">
		<!-- 配置事务属性 -->
		<tx:attributes>
			<!-- 所有方法都是事务方法 -->
			<tx:method name="*" rollback-for="java.lang.Exception"/>
		</tx:attributes>
	</tx:advice>
</beans>

最终的web.xml文件:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         id="WebApp_ID" version="2.5">
  <display-name>Restaurant</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

  <!-- 配置配置文件 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 增加前端控制器 -->
  <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:spring/applicationContext-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>springDispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- 配置过滤器 -->
  <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>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!--支持rest风格的过滤器 -->
  <filter>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

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转载自blog.csdn.net/weixin_42272869/article/details/112145131