SpringMVC实现一个controller写多个方法

时间：2024-05-11 19:33:20

MultiActionController与ParameterMethodNameResolver
在一个Controller类中定义多个方法，并根据使用者的请求来执行当中的某个方法，相当于Struts的DispatcherAction。使用MultiActionController需要配个MethodNameResolver实例，默认使用ParameterMethodNameResolver，他会根据所给的网址中，最后请求的文件名称来判断执行Controller中的哪一个方法

1.控制器类继承MultiActionController

package com.ljq.web.controller;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

/**

 * 实现一个controller写多个方法

 *

 * @author Administrator

 *

 */

public class MultiController extends MultiActionController {

    public ModelAndView add(HttpServletRequest request,

            HttpServletResponse response) {

        System.out.println("----add----");

        return new ModelAndView("/multi", "message", "add");

    }

    public ModelAndView update(HttpServletRequest request,

            HttpServletResponse response) {

        System.out.println("----update----");

        return new ModelAndView("/multi", "message", "update");

    }

    public ModelAndView query(HttpServletRequest request,

            HttpServletResponse response) {

        System.out.println("----query----");

        return new ModelAndView("/multi", "message", "query");

    }

}

2.定义控制方法按如下格式

    public ModelAndView add(HttpServletRequest request,

            HttpServletResponse response) {

        System.out.println("----add----");

        return new ModelAndView("/multi", "message", "add");

    }

3.在dispatcher-servlet.xml文件中引入多视图控制

    <bean id="paramMethodResolver" class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">

        <property name="paramName" value="action"></property>

    </bean>

然后注入自己的控制器类

    <bean name="/multi" class="com.ljq.web.controller.MultiController">

        <property name="methodNameResolver">

            <ref bean="paramMethodResolver"/>

        </property>

    </bean>

4.完善或者添加一个视图(multi.jsp)，对应控制器类的跳转

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

        <title>实现一个controller写多个方法</title>

    </head>

    <body>

        本次调用方法是<b>${message }</b>

    </body>

</html>

5.部署，启动

访问路径：

http://localhost:8083/springmvc/multi?action=add

http://localhost:8083/springmvc/multi?action=update

http://localhost:8083/springmvc/multi?action=query

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