我们都知道，servlet代码一般来说只能在一个servlet中做判断去实现一个servlet响应多个请求，
但是springMVC的话还是比较方便的，主要有两种方式去实现一个controller里能响应多个请求
第一种：继承MultiActionController类，这种方法已经废弃了，但是也能用
项目结构
具体配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd" >
<context:component-scan base-package="controller" />
<bean id="paramMethodResolver" class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">
<property name="paramName" value="cmd"></property> <!-- value可以改成action，访问 的时候也要改成action=方法名 -->
</bean>
<bean name="/pay" class="controller.MyController">
<property name="methodNameResolver">
<ref bean="paramMethodResolver"/>
</property>
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix"><value>/WEB-INF/pages</value></property>
<property name="suffix"><value>.jsp</value></property>
</bean>
</beans>
web.xml没改
<web-app> <display-name>Spring MVC Application</display-name> <servlet> <servlet-name>mvc-dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>mvc-dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:mvc-dispatcher-servlet.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>
hello.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
This is my JSP page. <br>
本次调用方法是<b>${message }</b>
</body>
</html>
控制器
package controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
@SuppressWarnings("deprecation")
@Controller
public class MyController extends MultiActionController {
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response) {
System.out.println("----add----");
return new ModelAndView("/hello", "message", "add");
}
public ModelAndView del(HttpServletRequest request,
HttpServletResponse response) {
System.out.println("----del----");
return new ModelAndView("/hello", "message", "del");
}
//接收单个字符串
public void update(HttpServletRequest request,
HttpServletResponse response){
String name=request.getParameter("name");
System.out.println("name:"+name);
}
}
访问方式
http://localhost:8080/MyWeb/pay?cmd=update&name=xxxx
后台输出了
name:xxxx
输入
http://localhost:8080/MyWeb/pay?cmd=add
前台显示为
This is my JSP page. 本次调用方法是add
第二种：就是最常用的用注解了
spring配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd" >
<!-- 自动扫描，根据注解注入 -->
<context:component-scan base-package="controller" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix"><value>/WEB-INF/pages</value></property>
<property name="suffix"><value>.jsp</value></property>
</bean>
</beans>
控制器
package controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
@RequestMapping("/pay")
public class MyController{
@RequestMapping("/add")
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response) {
System.out.println("----add----");
String name=request.getParameter("name");
System.out.println(name);
return new ModelAndView("/hello", "message", "add");
}
@RequestMapping("/del")
public ModelAndView del(HttpServletRequest request,
HttpServletResponse response) {
System.out.println("----del----");
String name=request.getParameter("name");
System.out.println(name);
return new ModelAndView("/hello", "message", "del");
}
}
调用方式
http://localhost:8080/MyWeb1/pay/add
前台结果
This is my JSP page. 本次调用方法是add