SpringMVC + MyBatis 配置文件

　　web.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
          version="3.1">
     <filter>
         <filter-name>encodingFilter</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>encodingFilter</filter-name>
         <url-pattern>/*</url-pattern>
     </filter-mapping>

     <servlet>
         <servlet-name>dispatcherServlet</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <init-param>
             <param-name>contextConfigLocation</param-name>
             <param-value>classpath:spring.xml</param-value>
         </init-param>
     </servlet>
     <servlet-mapping>
         <servlet-name>dispatcherServlet</servlet-name>
         <url-pattern>*.action</url-pattern>
     </servlet-mapping>
 </web-app>

　　

　　spring.xml

 <?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:tx="http://www.springframework.org/schema/tx"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xsi:schemaLocation="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.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        ">

        <!--扫描注解,目的就是对相关的javabean实例化-->
        <context:component-scan base-package="com.iotek"/>

        <!--启用springmvc的注解模式-->
        <mvc:annotation-driven />

        <!--DataSource-->
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
               <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
               <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/newsdb"></property>
               <property name="user" value="root"></property>
               <property name="password" value="root"></property>
               <!--连接池启动的时候默认创建的连接数量-->
               <property name="initialPoolSize" value="3"></property>
               <!--连接池最多可以管理的连接对象个数-->
               <property name="maxPoolSize" value="100"></property>
               <!--连接池中最多能够管理的statement对象-->
               <property name="maxStatements" value="1000"></property>
               <!--一旦连接池中现有的连接数量不够，每次增长的连接数目：5  ，但是连接池中的连接数量-->
               <!--最多不可超过maxPoolSize中设置的连接数目-->
               <property name="acquireIncrement" value="5"></property>
        </bean>

        <!--Factory-->
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
               <property name="dataSource" ref="dataSource"/>
               <!--配置mapper中使用的实体类别名-->
               <property name="typeAliasesPackage" value="com.iotek.entity"/>
               <!--mapper文件的路径
               classpath*:com/iotek/mapper/**/*.xml  : classpath,从源文件角度就是src，实际上是运行时候的classes目录
                      com.iotek.mapper包，以及它所有的子包里面的xml文件，都会认为是mapper文件
               -->
               <property name="mapperLocations" value="classpath*:com/iotek/mapper/**/*.xml"/>
        </bean>

        <!--
               DAO层位置的确定
        -->
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
               <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
               <!--指定dao接口的位置-->
               <property name="basePackage" value="com.iotek.dao"/>
        </bean>

        <!--TransactionManager-->
        <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
               <property name="dataSource" ref="dataSource"></property>
        </bean>

        <!--注解或AOP的方式使用声明式事务-->
        <tx:annotation-driven transaction-manager="txManager"></tx:annotation-driven>

 </beans>

 　　　　<tx:advice id="txAdvice" transaction-manager="transactionManager">
               <tx:attributes>
                      <tx:method name="create*"/>
                      <tx:method name="query*"/>
                      <tx:method name="update*"/>
                      <tx:method name="delete*"/>
               </tx:attributes>
        </tx:advice>

        <aop:config>
               <!--切面的配置 id表示切面的唯一id，ref表示切面的支持类-->
               <aop:pointcut id="operate" expression="execution(* com.iotek.service.*.*(..))"/><!--切点( 切入点)-->
               <aop:advisor advice-ref="txAdvice" pointcut-ref="operate"/>
        </aop:config>