</init-param>

  </filter>

  <filter-mapping>

    <filter-name>characterEncodingFilter</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>

</web-app>

SSM框架：基于spring将springmvc和mybatis进行整合

web.xml配置文件：

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

  <display-name>25-SSM</display-name>

  <welcome-file-list>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

    <welcome-file>index.jsp</welcome-file>

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

  </welcome-file-list>

  <!-- 注册中央调度器DispatcherServlet, 创建SpringMVC的容器对象 -->

  <servlet>

    <servlet-name>dispatcherServlet</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <!-- 指定springmvc配置文件 -->

    <init-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath:conf/dispatcherServlet.xml</param-value>

    </init-param>

    <load-on-startup>1</load-on-startup>

  </servlet>

  <servlet-mapping>

    <servlet-name>dispatcherServlet</servlet-name>

    <url-pattern>/</url-pattern>

  </servlet-mapping>

  <!-- 注册字符集过滤器，解决post请求乱码的问题 -->

  <filter>

    <filter-name>characterEncodingFilter</filter-name>

    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

    <!-- 项目使用的字符编码 -->

    <init-param>

        <param-name>encoding</param-name>

        <param-value>utf-8</param-value>

    </init-param>

    <!-- 强制request使用encoding的值 -->

    <init-param>

        <param-name>forceRequestEncoding</param-name>

        <param-value>true</param-value>

    </init-param>

    <!-- 强制response使用encoding的值 -->

    <init-param>