web-xml

<?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>rrr</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>

  
  <!-- post 方式的中文乱码解决 -->
    <filter>
        <filter-name>characterEncoding</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- 配置HiddenHttpMethodFilter,将 post转为 put or delete提交方式 -->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- 引入springmvc 核心控制器 -->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 加载springmvc的配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!-- classpath 表示 WEB-INF/classes -->
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <!-- tomcat启动时，创建DispatcherServlet对象 -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <!-- 访问静态资源时，因为路径可以匹配上，就会访问DispatcherServlet，但是DispatcherServlet默认情况下，不处理静态资源，所以报404 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 引入spring的配置文件 -->
    <!-- spring的核心配置 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <!-- 设置spring的配置文件的路径 -->
        <param-value>classpath:spring-bean.xml</param-value>
        <!-- <param-value>/WEB-INF/classes/bean.xml</param-value> -->
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
  
</web-app>