<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

<script type="text/javascript" src="http://www.mamicode.com/js/jquery.min.js"></script>
<a href="http://www.mamicode.com/day01/spring/mvc">submit</a>

<input type="button" id="bt1" value="http://www.mamicode.com/ajax" />

<script type="text/javascript">

    var data = {
        "name":"jacky",
        "age":"20"
    }
    /*
    // 请求Key/Value（无需设置请求类型）
    $(function(){
        $("#bt1").click(function(){
            $.ajax({
                type:"POST",
                url:"/day01/spring/mvc",
                //contentType:"application/json;charet=utf-8",
                data:data,
                success:function(data){
                    alert(data)
                }
            })
        })
    })
    */
    
    // 请求Json字符串（需要设置请求类型）
    $(function(){
        $("#bt1").click(function(){
            $.ajax({
                type:"POST",
                url:"/day01/spring/mvc",
                contentType:"application/json;charet=utf-8",
                data:JSON.stringify(data),
                success:function(data){
                    alert(data)
                }
            })
        })
    })
    
</script>

package com.spring;

import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

import net.sf.json.JSONObject;

import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.model.User;

@ControllerAdvice
@RequestMapping("/spring")
public class TestControllers
{    
      // 无返回值的Controller结合ajax实现局部刷新，有返回值的Controller实现页面的跳转与数据的响应
        
    
      /*
       * 将返回值已Object的形式输出到当前页面
       * PrintWriter 输出对象
       * 
       */
    
        /*
        @RequestMapping("/mvc")
        public void showPerson(PrintWriter printWriter, @RequestBody String param) 
        {
    
            System.out.println(param);
            // 写入Response的Body体
    
            String st ="{\"name\":\"zhangsna\",\"name1\":\"zhangsna\"}";
            Map map = JSONObject.fromObject(st);
            System.out.println(map);
            printWriter.println(map);
        }
        */
        
        /*
         * POJO（JavaBean）  接收前台传递的key/value，
         * @ResponseBody 将User对象输出至Response的Body中
         */
        
        /*
          @RequestMapping("/mvc")
          public  @ResponseBody User showPerson(User user)
          {
             System.out.println(user);        
             return user;
          }
         */
        
        /*
         *  接收前台传递的Json字符串，
         *  @ResponseBody 将User对象输出至Response的Body中
         */
        /*@RequestMapping("/mvc")
        @ResponseBody
        public Map showPerson( @RequestBody String params)
        {
            @SuppressWarnings("unchecked")
            Map<String,Object> map = JSONObject.fromObject(params);
            System.out.println(map);       
            return map;
        }*/
    
        /*
         * ModelAndView 视图（view）和模型（数据） 
         * Model 内置的一个数据对象
         * 
         */
    
        @RequestMapping("/demo1")
        public ModelAndView execute(Model model)
        {
            // 设置数据模型
            model.addAttribute("name", "Jacky");
            model.addAttribute("age", "20");
            model.addAttribute("school", "陕西理工大学");
            //设置视图数据模型
            ModelAndView mav = new ModelAndView();
            mav.setViewName("return");
            mav.addObject("data",model);
            return mav;    
        }
        /*
         * 自定义参数
         */
        @RequestMapping("/demo2")
        public ModelAndView execute()
        {
            Map data = new HashMap();
            Map map = new HashMap();
            // 设置数据模型
            map.put("name", "Jacky");
            map.put("age", "20");
            map.put("school", "陕西理工大学");
            data.put("data", map);
            //返回视图数据模型
            return new ModelAndView("return",data);    
        }
        
        /*
         * @RequestParam("user") user和前台传递的值保持一致
         * 
         */
        @RequestMapping("/demo3")
        public void execute( PrintWriter writer ,@RequestParam("user") String name)
        {
            writer.print(name);
        }
        
        /*
         * @RequestParam("user") user和前台传递的值保持一致
         * RequestMethod.GET  请求方式
         */
        @RequestMapping(value=("/demo04"),method={RequestMethod.GET,RequestMethod.POST})
        public void executes( PrintWriter writer ,@RequestParam("user") String name)
        {
            writer.print(name);
        }
        
        /*
         * method={RequestMethod.GET,RequestMethod.POST} 请求方式
         * @PathVariable("testId") 将url中的变量绑定到Controller的形参中
         * 可以实现rest接口
         */
        @RequestMapping(value=("/delete/{testId}"),method={RequestMethod.GET,RequestMethod.POST})
        public void execut( PrintWriter writer ,@PathVariable("testId") String id)
        {
            writer.print("Delete ID IS :"+id);
        }    
}

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>    
    <title>returnJsp</title>
  </head> 
  <body>
    This is return JSP page. <br>
    返回数据：${data}
  </body>
</html>