SSM需要的三大配置文件

在整合SSM项目的时候，经常会因为配置太多而苦恼，故此总结一下

1、WEN-INF文件夹下的web.xml文件

内容主要包括

  <!-- 父容器 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <!-- spring mvc的前端控制器 -->
  <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.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

 <!--解决中文乱码的过滤器-->
  <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>

2、父容器

    <!-- 注解service的bean -->
    <context:component-scan base-package="com.test.service"/>

    <!-- 引入jdbc.properties -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!-- 数据源bean  如果不引入的话，也可以直接在value里面写相应的信息-->
    <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- <property name="configLocation" ></property>  -->
        <property name="dataSource" ref="dataSource"/>
        <property name="typeAliasesPackage" value="com.test.model"/>
        <property name="mapperLocations" value="classpath:com/test/mapper/*.xml"/>
        <!--Mybatis插件配置，我这里是PageHelper分页插件-->
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageInterceptor">
                    <property name="properties">
                        <!--使用下面的方式配置参数，一行配置一个 -->
                        <value>
                            helperDialect=mysql
                        </value>
                    </property>
                </bean>
            </array>
        </property>
    </bean>
    <!--
        生成所有Mapper的bean
        dao的bean默认的名字：类名，首字母小写  deptDao   empDao
     -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.test.mapper"/>
    </bean>

3、springmvc.xml配置文件

    <!--文件上传解析器-->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="UTF-8"></property>
        <property name="maxUploadSize" value="5000000"></property>
    </bean>

    <!--开启注解功能-->
    <mvc:annotation-driven/>
    <!--加载静态资源-->
    <mvc:default-servlet-handler/>

    <!-- 注解生成控制器的bean -->
    <context:component-scan base-package="com.test.controller"/>