@ResponseBody
@RequestMapping(value="/updateData1.do",method={RequestMethod.POST})
public Object updateData1(HttpServletRequest req) throws IOException {
StringBuffer s = new StringBuffer();
BufferedReader read = req.getReader();
String input = null;
//读取发过来的信息
while((input = read.readLine()) != null) {
s.append(input);
}
System.out.println(s);
//字符串转JSON对象
JSONObject jsonObj=JSONObject.fromObject(s.toString());
System.out.println(jsonObj.toString());
//JSON对象转java对象
User u = (User)JSONObject.toBean(jsonObj, User.class);
System.out.println(u);