服务端数据到客户端
返回页面，Controller中方法返回String，String对应的是view的位置，如果需要携带数据通过model(相当于一个Map)传递到view, view中使用jstl的EL表达式来绑定model带来的数据。
Java代码
@RequestMapping(value="/getPojoView", method=RequestMethod.GET)
public String getPojoView(Model model){
Pojo pojo = new Pojo();
pojo.setPojoName("testName");
pojo.setPojoValue("testValue");
model.addAttribute(pojo);
return"sample/pojoView";
}

返回Json对象，利用@ResponseBody来实现。
Java代码
@RequestMapping(value="/getPojoJson", method=RequestMethod.GET)
public @ResponseBody Pojo getPojoJson(){
Pojo pojo = new Pojo();
pojo.setPojoName("testName");
pojo.setPojoValue("testValue");
return pojo;
}
注：spring mvc自动将java对象转化成了json对象传回了客户端，返回对象可以是Pojo也可以是List

直接操作Response自己实现想要的效果。
Java代码
@RequestMapping(value="/getCustomResponse", method=RequestMethod.GET)
public void getCustomResponse(HttpServletResponse response){
//操作response...
}
注：response为spring根据方法的type类型注入的
客户端数据到服务端
通过URL传回参数：
view
Html代码
<script type="text/java script"src="jquery-1.4.min.js">

button与链接效果一致

simple

<script type="text/java script">
function simple(){
$.getJSON("simple",{"name":"nameJsonTest","age":"100"},function(){});
}

list

<script type="text/java script">
function list(){
$.getJSON("list",{"names":["name1","name2","name3"]},function(){});
}

pojo

<script type="text/java script">
function pojo(){
$.getJSON("pojo",{"pojo":{"pojoName":"testName","pojoValue":"testValue"}},function(){});
}

rest

<script type="text/java script">
function rest(){
var pageSize = 20;
var pageNo = 3;
$.getJSON("rest/"+pageSize+"/"+pageNo,{},function(){});
}

controller
Java代码
package sample;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
@RequestMapping(value="/urlparam")
public class UrlParamController {
@RequestMapping(value="/", method=RequestMethod.GET)
public String index(){
return"urlparam/index";
}

@RequestMapping(value="/simple", method=RequestMethod.GET)
public void simple(@RequestParam String name, @RequestParam Integer age){
System.out.println("name:"+name);
System.out.println("age:"+age);
}

//list内不能放POJO对象
@RequestMapping(value="/list", method=RequestMethod.GET)
public void list(@RequestParam("names[]") String[] names){
//也可以用List names来接收
for(String name : names){
System.out.println("name:"+name);
}
}

//单URL目前还不支持POJO对象，只能支持键值对，希望spring以后有所改善
@RequestMapping(value="/pojo", method=RequestMethod.GET)
public void pojo(@RequestParam("pojo[pojoName]") String name, @RequestParam("pojo[pojoValue]") String value){
System.out.println("name:"+name);
System.out.println("value:"+value);
}

@RequestMapping(value="/rest/{pageSize}/{pageNo}", method=RequestMethod.GET)
public void rest(@PathVariable Integer pageSize, @PathVariable Integer pageNo){
System.out.println("pageSize:"+pageSize);
System.out.println("pageNo:"+pageNo);
}
}

Spring MVC 前后台数据交互(一)

button与链接效果一致