ssm使用全注解实现增删改查案例——web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
  <display-name></display-name> 

  <!-- 加载 spring  -->

  <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 前端控制器  -->

  <servlet>
    <servlet-name>MyDispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext-servlet.xml</param-value>
    </init-param>
    <!--        标记容器是否在启动的时候就加载这个servlet。

            当值为0或者大于0时，表示容器在应用启动时就加载这个servlet；

当是一个负数时或者没有指定时，则指示容器在该servlet被选择时才加载。

                                                  正数的值越小，启动该servlet的优先级越高。

-->

    <load-on-startup>1</load-on-startup>
  </servlet>
  <!-- spring mvc 配置结束     -->

  <!-- spring mvc  拦截   -->
  <servlet-mapping>
    <servlet-name>MyDispatcher</servlet-name>
    <!-- /拦截所有请求      -->
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <!-- spring mvc 拦截结束 -->




  <!-- spring mvc 过滤解决中文乱码   -->
  <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>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>