SpringMVC学习笔记（三）：handlerMapping的三种方式及Controller三种配置
方式一：根据beanName找到对应的Controller
前端jsp中代码
<a href="user.do?mapType=1">根据beanName找到对应的Controllera><br/>springmvc-servlet.xml配置：
<bean name="/user.do" class="com.lin.controller.UserController">bean> 方式二：根据URL找到对应的Controller
前端jsp中代码
<a href="userInfo.do?mapType=2">根据URL找到对应的Controllera><br/> springmvc-servlet.xml配置：
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/userInfo.do">userControllerprop>
props>
property>
bean>
<bean id="userController" class="com.lin.controller.UserController">bean> 方式三：根据Controller类名找到对应的Controller
前端jsp中代码
<a href="userController.do?mapType=3">根据Controller类名找到对应的Controllera><br/>springmvc-servlet.xml配置：
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">bean>
<bean class="com.lin.controller.UserController">bean>
疑问：
不知道为什么我将其他两种的配合注释掉了，重启servers,另外两种方式还是有效的。
实例：
request.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'request.jsp' starting pagetitle>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
head>
<body>
<a href="user.do?mapType=1">根据beanName找到对应的Controllera><br/>
<a href="userInfo.do?mapType=2">根据URL找到对应的Controllera><br/>
<a href="userController.do?mapType=3">根据Controller类名找到对应的Controllera><br/>
<p>${resp}p>
body>
html>
UserController.java
package com.lin.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
public class UserController extends AbstractController {
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest arg0,
HttpServletResponse arg1) throws Exception {
// 后台输出
System.out.println("接收到request:" + arg0.getParameter("mapType"));
//将前端传过来的类型又传回去显示
ModelAndView mav = new ModelAndView("request");
mav.addObject("resp","ok response type :" + arg0.getParameter("mapType"));
return mav;
}
}
web.xml
<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>SpringMVC03display-name>
<welcome-file-list>
<welcome-file>index.jspwelcome-file>
welcome-file-list>
<servlet>
<servlet-name>springmvcservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
servlet>
<servlet-mapping>
<servlet-name>springmvcservlet-name>
<url-pattern>*.dourl-pattern>
servlet-mapping>
web-app>springmvc-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">bean>
<bean class="com.lin.controller.UserController">bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/">property>
<property name="suffix" value=".jsp">property>
bean>
beans>