@ResponseBody
params="json"：访问我这个方法的时候一定要有参数名为json
返回值User
jackson-all-1.9.0.jar
@RequestMapping(value="/{nickname}",method=RequestMethod.GET,params="json")
@ResponseBody
public User show(@PathVariable String nickname){
System.out.println(nickname);
return users.get(nickname);
}
http://localhost:7070/SSM/user/lisi?json
原文：http://www.cnblogs.com/mrxiaohe/p/5871242.html