SSM项目中配置问题

创建Spring+SpringMVC+Mybatis项目时候，首先需要配置一些对应的配置文件，下面简要介绍下这些配置文件所需的最简单需求。

1  Mybatis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
 
 	<!-- 1. 数据源 : DriverManagerDataSource -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/*"/>
        <property name="username" value="*"/>
        <property name="password" value="*"/>
    </bean>
 
    <!--
        2. mybatis的SqlSession的工厂: SqlSessionFactoryBean
    -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"/>
	</bean>
	<!--
        3. mybatis自动扫描加载Sql映射文件 : MapperScannerConfigurer
    -->
	<bean  class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
		<property name="basePackage" value="com.*.*.mapper" />
	</bean>
	
	<!-- 4. 事务管理 : DataSourceTransactionManager -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
 
 	<!-- 5. 使用声明式事务 -->
    <tx:annotation-driven transaction-manager="txManager"/>
 
</beans>

2 springmvc-servlet.xml

此配置文件配置了SpringMVC框架所需的内容。带*的部分均为自己填写内容

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	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/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
 
     <!--开启注解-->
	<mvc:annotation-driven />
	<!-- 静态资源可直接访问 -->
	<mvc:default-servlet-handler />
 
	<!-- 扫描含有Controller注解所在的包 -->
	<context:component-scan base-package="com.*.*.controller" />
 
	<!-- jsp视图路径配置 -->
	<bean id="jspViewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>
</beans>

3 applicationContext.xml

此为Spring所需的配置文件。此处注意：带*部分是项目名称，不具体到包。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	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">
 
	<!-- 自动加载，过滤掉带有@Controller注解的类 -->
	<context:component-scan base-package="com.*.*">
		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
	</context:component-scan>
	<!--导入需要的文件资源-->
	<import resource="MyBatis.xml" />
 
</beans>

4 web.xml

<?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_3_0.xsd"
	version="3.0">
 
 
	<listener>
    		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  	</listener>
 
	<!-- Spring and Spring MVC -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>
 
	<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-servlet.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>
 
 
 
</web-app>

listener必须有，缺少则会报错，之后也可以加入filter等内容。