web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
         version="3.0">

  <display-name>xmp</display-name>
  <!-- 解决工程编码过滤器 -->

  <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>


  <!--还原对put和delete的处理，过滤器-->
  <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>

  <!--配置springmvc DispatcherServlet 在DispatcherServlet的初始化过程中，框架会在web应用的 WEB-INF文件夹下寻找名为[servlet-name]-servlet.xml 的配置文件，生成文件中定义的bean-->
  <!---第一步 ：加载Spring上下文环境的配置文件applicationContext.xml文件-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-mybatis.xml</param-value>
  </context-param>

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

  <!-- 第三步：配置 SpringMvc核心控制器 DispatcherServlet -->
  <servlet>
    <!--servlet名称-->
    <servlet-name>mvc-dispatcher</servlet-name>
    <!-- servlet类全路径-->
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <!--配置dispatcher.xml作为mvc的配置文件-->
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <!--指定当Web应用启动时，装载Servlet的次序-->
    <load-on-startup>1</load-on-startup>
    <async-supported>true</async-supported>
  </servlet>
  <!-- Spring MVC配置文件结束 -->

  <!--拦截设置-->
  <servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <!-- 由SpringMVC拦截所有请求 -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <jsp-config>
    <taglib>
      <taglib-uri>/tags</taglib-uri>
      <taglib-location>WEB-INF/datetag.tld</taglib-location>
    </taglib>
  </jsp-config>
</web-app>