【SpringMVC】SpringMVC+Spring+Mybatis整合开发

4).Spring + SpringMVC + Mybatis整合开发

环境搭建
1) 导入jar
spring的jar、日志的jar、mybatis的jar、mybatis-spring的jar、oracle的jar、连接池的jar、aop的依赖(asm cglib aspectj)
2) 导入配置文件
	web.xml
	mvc.xml [开启注解开发mvc、注解管理Controller]  	---小spring工厂
	applicationContext.xml[管理连接池、事务相关、mybatis相关、开启注解管理service]  ---大spring工厂
	自定义的application.properties
	注意：springmvc的小spring工厂，能够使用到spring的大工厂中的对象
3) 初始化配置
	①web.xml：
		springmvc核心控制器
		指定mvc配置文件的路径
		编码设置的filter
		spring工厂初始化的监听器
		spring配置文件初始化
		代码：
		<!-- springMVC核心控制器 -->
  <servlet>
  	<servlet-name>SpringMVC</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<!-- 指定springMVC配置文件路径 -->
  	<init-param>
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:/mvc.xml</param-value>
  	</init-param>
  	<!-- 设置在tomcat启动创建控制器 -->
  	<load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
  	<servlet-name>SpringMVC</servlet-name>
  	<!-- 指定所有的springMVC控制器访问以.do结尾 -->
  	<url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <!-- 编码设置，spring自带的过滤器 -->
  <filter>
  	<filter-name>encodingFilter</filter-name>
  	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  	<!-- 设置请求编码格式 -->
  	<init-param>
  		<param-name>encoding</param-name>
  		<param-value>UTF-8</param-value>
  	</init-param>
<!-- 开启响应设置编码 -->
		<init-param>
			<param-name>forceResponseEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
  </filter>
  <filter-mapping>
  	<filter-name>encodingFilter</filter-name>
  	<url-pattern>*.do</url-pattern>
  </filter-mapping>
  
  <!-- spring工厂初始化监听器 -->
  <listener>
  	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 标明加载spring工厂的配置文件路径 -->
  <context-param>
  	<param-name>contextConfigLocation</param-name>
  	<param-value>classpath:/applicationContext.xml</param-value>
  </context-param>
	②mvc.xml
		注解管理controller
		注解开发mvc
		代码：
<!-- 1. 开启注解管理Controller对象 IOC注解：只能扫描Controller -->
	<context:component-scan base-package="com.jwnming.controller"></context:component-scan>
	<!-- 2. 开启注解开发mvc(映射访问路径)  MVC注解 -->
	<mvc:annotation-driven/>
	③applicationContext.xml
		引入外部properties配置文件
		开启注解管理service[除了controller以外的对象]
		连接池
		事务相关[事务管理器、事务增强、aop] 
		mybatis相关配置[SqlSessionFactoryBean、MapperScannerConfigurer]
		代码：
		<!-- 引入properties配置文件 -->
    <context:property-placeholder location="classpath:application.properties"/>
	<!-- 开启注解：service+test -->
	<context:component-scan base-package="com.baizhi.service"></context:component-scan>
	<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~1.连接池~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
     <bean id="ds" class="com.alibaba.druid.pool.DruidDataSource">
		<!—配置的值在application.properties文件中 -->
     	<property name="driverClassName" value="${database.driverClassName}"></property>
     	<property name="url" value="${database.url}"></property>
     	<property name="username" value="${database.username}"></property>
     	<property name="password" value="${database.password}"></property>
     	<property name="initialSize" value="${database.initialSize}"></property>
     	<property name="maxActive" value="${database.maxActive}"></property>
     	<property name="maxWait" value="${database.maxWait}"></property>
     </bean>
	
	<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~事务相关~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
	<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="ds"></property>
	</bean>
	<tx:advice id="txAdvice" transaction-manager="txManager">
		<tx:attributes>
			<tx:method name="login" read-only="true" propagation="SUPPORTS"/>
			<tx:method name="regist" propagation="REQUIRED"/>
			<tx:method name="get*" read-only="true" propagation="SUPPORTS"/>
			<tx:method name="*" propagation="REQUIRED"/>
		</tx:attributes>
	</tx:advice>
	<aop:config>
		<aop:pointcut expression="execution(* com.baizhi.service.impl.*.*(..))" id="pc"/>
		<aop:advisor advice-ref="txAdvice" pointcut-ref="pc"/>
	</aop:config>
	
	<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~mybatis相关~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
	<bean id="sf" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 连接池 -->
		<property name="dataSource" ref="ds"></property>
		<!-- maspper文件注册路径 -->
		<property name="mapperLocations" value="${mybatis.mapperLocations}"></property>
		<!-- 别名 -->
		<property name="typeAliasesPackage" value="${mybatis.typeAliasesPackage}"></property>
	</bean>
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 指定需要的sqlSessionfactory -->
		<property name="sqlSessionFactoryBeanName" value="sf"></property>
		<!-- 指定dao接口所在的包 -->
		<property name="basePackage" value="com.baizhi.dao"></property>
	</bean>