<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
<!--    配置springMVC的前端控制器，对浏览器发送的请求进行统一的处理-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--        配置spring MVC配置文件的位置和名称 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
<!--        将前端控制器DispatcherServlet的初始化时间提前到服务器启动时-->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

<!--    配置编码过滤器 CharacterEncodingFilter 解决中文POST乱码问题-->
    <filter>
        <filter-name>encode</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!--        encoding 编码格式-->
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
<!--        同时开启请求和响应的编码设置-->
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
<!--    配置拦截哪些请求进行过滤-->
    <filter-mapping>
<!--        拦截规则-->
<!--        <url-pattern></url-pattern> 根据url请求进行匹配
            <servlet-name></servlet-name> 过滤哪个servlet
-->
        <filter-name>encode</filter-name>
        <servlet-name>springmvc</servlet-name>
    </filter-mapping>
</web-app>