JSONP实例

页面（原生JS）

<!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>JSONP DEMO</title>
	<script type="text/javascript">
		var flightDataHandler = function(data) {
			alert("您查询的航班结果：票价：" + data.price + ",余票：" + data.tickets + "张");
		}
		
		var script = document.createElement("script");
		script.setAttribute("src","http://localhost:8080/rapiddemo/jsonp/tickets?code=SZ1988&callback=flightDataHandler");
		document.getElementsByTagName('head')[0].appendChild(script); 
	</script>
</head>
<body>

</body>
</html>

jQuery版本：

<!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>JSONP DEMO</title>
	<script type="text/javascript" src="/rapiddemo/scripts/jquery.js"></script>
	<script type="text/javascript">
		$(function() {
			$.ajax({
				type:"GET",url:"http://localhost:8080/rapiddemo/jsonp/tickets",data:{
					code:'SZ1988'
				},dataType:"jsonp",jsonp:"callback",jsonpCallback:"flightDataHandler",success:function(data) {
					console.info('query success');
					alert("您查询的航班结果：票价：" + data.price + ",余票：" + data.tickets + "张");
				},error:function() {
					alert("jquery Ajax error!");
				}
			});
		});
	</script>
</head>
<body>

</body>
</html>

spring controller代码：

package com.company.project.controller;

import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javacommon.base.BaseRestSpringController;

@Controller
@RequestMapping(value="/jsonp/")
public class JsonpController extends BaseRestSpringController<Object,Long>{
	private static Logger logger = Logger.getLogger(JsonpController.class);
	
	@RequestMapping(value="tickets")
	public String tickets(@RequestParam("code") String code,@RequestParam("callback") String callback,HttpServletResponse response) throws IOException {
		logger.info("code:" + code);
		logger.info("callback:" + callback);
		
		String scs = ""+callback+"({'code':'SZ1988','price':842,'tickets':29})";
		response.getWriter().println(scs);
		
		logger.info("method called success...");
		
		return null;
	}
}

关于jsonp，请参考http://q.115.com/t-158587-1211997.html

JSONP实例

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