返回json格式的字符串

1.导入以下jar包

2.方法代码

@Controller
@RequestMapping("/json")
public class jsonController {
     
    @ResponseBody
    @RequestMapping("/user")
    public  User get(){
        User u = new User();
        u.setId(1);
        u.setName("jayjay");
        u.setBirth(new Date());
        return u;
    }
}