Question

示例：User.java

@Component
    public class User{
        public String name;
        public String email;



        public User() {
            super();
        }
        public User(String name, String email) {
            super();
            this.name = name;
            this.email = email;
        }
        public String getName() {
            return name;
        }
        public String getEmail() {
            return email;
        }
        public void setName(String name) {
            this.name = name;
        }
        public void setEmail(String email) {
            this.email = email;
        }



    }

HomeController.java

@Controller
public class HomeController {

    @Resource
    User user;

    @RequestMapping(value="/getUsers", method= RequestMethod.POST)
    public @ResponseBody User getUser(User user){
        return user;
    }
}

但是user.getName（）和user.getEmail（）为null。用户类未初始化。为什么？即使我在客户端发送用户对象

POST /spring/getUsers HTTP/1.1 Host: localhost:2015 Cache-Control: no-cache {"name":"vinod", "email":"vinod@gmaol.com" }

Answer 1

以下是示例代码。请仔细阅读文档，了解requestBody注释的工作原理等。

@Controller
public class HomeController {

    @RequestMapping(value="/getUsers", method= RequestMethod.POST)
    public @ResponseBody User getUser(@RequestBody User user){
        return user;
    }
}

为什么对象没有在spring mvc初始化？

1 个答案: