一个标准的 web.xml 文件，提供给新手做参考。

<?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" version="3.0">

<display-name>这里请修改为你的项目名称</display-name>

<listener>

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

</listener>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:/spring-*.xml</param-value>

</context-param>

<!-- 静态资源 start -->

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.html</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.jpg</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.gif</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.png</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.js</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.css</url-pattern>

</servlet-mapping>

<!-- 静态资源 end -->

<!-- 解决中文乱码 start -->

<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>

</filter>

<filter-mapping>

<filter-name>CharacterEncodingFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<!-- 解决中文乱码 end -->

<!-- 用于跨域 -->

<!-- 跨域start -->

<filter>

<filter-name>CORS</filter-name>

<filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>

<init-param>

<param-name>cors.allowOrigin</param-name>

<param-value>*</param-value><!-- 参数cors.allowOrigin可以指定具体的源来访问 ，*为所有域名都能够访问 http://static.10000show.com:7777 -->

</init-param>

<init-param>

<param-name>cors.supportedMethods</param-name>

<param-value>GET, POST, HEAD, PUT, DELETE</param-value>

</init-param>

<init-param>

<param-name>cors.supportedHeaders</param-name>

<param-value>Accept, Origin, X-Requested-With, Content-Type, Last-Modified</param-value>

</init-param>

<init-param>

<param-name>cors.exposedHeaders</param-name>

<param-value>Set-Cookie</param-value>

</init-param>

<init-param>

<param-name>cors.supportsCredentials</param-name>

<param-value>true</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>CORS</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<!-- 跨域end -->

<!-- Spring MVC配置 -->

<!-- ====================================== -->

<servlet>

<servlet-name>spring</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<!-- 默认/WEB-INF/[servlet名字]-servlet.xml加载上下文， 如果配置了contextConfigLocation参数， 将使用classpath:/mvc-dispatcher-servlet.xml加载上下文 -->

<param-name>contextConfigLocation</param-name>

<param-value>classpath:/spring-mvc.xml</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>spring</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

</web-app>