<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>springdemo-demo-01</display-name>
<!-- 核心控制器 -->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 指定spring配置的名字与路径 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:resource/spring-mvc.xml</param-value>
</init-param>
</servlet>
<!-- 配置servlet映射路径 -->
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>*.mvc</url-pattern>
</servlet-mapping>
</web-app>
web.xml映射路径不能使用/*
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<!-- 映射路径不能使用/* -->
<!-- 因为SpringMVC的核心控制器没有对jsp拦截进行排除. -->
<!--这是错误的-->
<url-pattern>/*</url-pattern>
</servlet-mapping>