Javaweb配置web.xml

<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_4_0.xsd"
         version="4.0">
    <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--servelet配置文件地址-->
<init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
<!--DispatcherServlet初始化的时间提前服务器启动前1s-->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <!-- /:代表除了jsp以外的所有请求，因为tomcat的web.xml默认有处理jsp的servelet,
            且DispatcherServlet处理不了
             /*：代表所有请求-->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>