SSM项目中配置问题

建立Spring+SpringMVC+Mybatis项目时候，首先须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*的部分均为本身填写内容

1. <?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。

1. <?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>
   
   <!--导入须要的文件资源-->
   
   <import resource="MyBatis.xml" />
   
   
   </beans>

    

4 web.xml

1. <?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，缺乏则会报错，以后也能够加入filter等内容。