<?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">
  <!-- 配置:所有請求由SpringMVC管理-->
  <servlet>
    <servlet-name>DispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>DispatcherServlet</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
 <!-- DispatcherServlet攔截所有請求  ->  通過訪問url路徑找到對應的控制器 -> 通過適配器調用控制器的方法
      ->    控制器里面的方法處理業(yè)務  ->  通過視圖解析器返回數據到頁面 -> 形成視圖                   -->
    <!-- 1.配置url處理映射
    url處理映射的三種方式:[通過訪問路徑找到對應的控制器]
    1.BeanNameUrlHandlerMapping:通過url名字找到對應的bean的name控制器
    2.SimpleUrlHandlerMapping:[簡單的url處理映射]通過key找到bean的id的控制器
    3.ControllerClassNameHandlerMapping:[控制器的類名處理映射]-不用配置訪問路徑,
            默認的訪問路徑就是類名,首字母大寫變小寫,加.do ->userController.do
    -->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
    <!--<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">-->
        <!--<property name="mappings">-->
            <!--<props>-->
                <!--<prop key="/user1.do">userController</prop>-->
                <!--<prop key="/user2.do">userController</prop>-->
                <!--<prop key="/user3.do">userController</prop>-->
            <!--</props>-->
        <!--</property>-->
    <!--</bean>-->
    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"></bean>
    <!-- 2.配置控制器處理適配器[配置如何調用控制器的方法]
        兩種方式:(返回值不同)
            第一種:SimpleControllerHandlerAdapter
                功能:執(zhí)行controller,調用controller里面的方法,返回modelAndView
    -->
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>
    <!-- 第二種:HttpRequestHandlerAdapter
                功能:執(zhí)行controller,調用controller里面的方法,返回null
    -->
    <bean class="org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter"></bean>
    <!-- 3.配置控制器-->
    <!--<bean name="/user.do" class="com.lg.controller.UserController"></bean>-->
    <!--<bean id="userController" class="com.lg.controller.UserController"></bean>-->
    <bean class="com.lg.controller.UserController"></bean>
    <bean name="/http.do" class="com.lg.controller.HttpController"></bean>
    <!-- 4.配置資源解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

package com.lg.controller;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class UserController implements Controller {
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView mav=new ModelAndView("/user/usrelist");
        mav.addObject("name","liu");
        return mav;
    }
}