如何在Spring @RestController中映射多個bean？

Question

如何在我的@RestController中映射多個豆？

我用彈簧web的4.3.8.RELEASE.jar

我什麼都試過：@RequestParam @RequestBody，@RequestAttribute，@RequestPart但沒有任何工程...

package com.example.demo; 

import org.springframework.http.MediaType; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.bind.annotation.RestController; 

@RestController 
public class RestService { 

    @RequestMapping(value = "demo", method = RequestMethod.POST, consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE) 
    public Object[] demo(Foo foo, Bar bar) { 
     return new Object[]{foo, bar}; 
    } 

    public static class Bar { 
     public Long id; 
     public String bar; 
    } 

    public static class Foo { 
     public Long id; 
     public String foo; 
    } 
} 

我的（編碼的）有效載荷是：

foo=%7B%22id%22%3A123%2C%22foo%22%3A%22foo1%22%7D&bar=%7B%22id%22%3A456%2C%22bar%22%3A%22bar1%22%7D

解碼淨荷：

個

foo={"id":123,"foo":"foo1"}&bar={"id":456,"bar":"bar1"}

請求報頭：

Content-Type: application/x-www-form-urlencoded

與上面的代碼，它返回：

[{"id":null,"foo":null},{"id":null,"bar":null}]

但我想要的是：

[{"id":123,"foo":"foo1"},{"id":456,"bar":"bar1"}]

感謝

Answer 1

你是創建靜態內部cla ss在你的RestController中。 Spring不會自動將接收到的請求中的屬性與提到的bean進行映射。請在單獨的包或外部控制器中定義您的bean。然後你就可以將它與@RequestBody進行映射。

  @RestController 
      public class RestService { 

       @RequestMapping(value = "demo", method = RequestMethod.POST, consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE) 
       public Object[] demo(@RequestBody FooBar foobar) { 
         // your custom work 
       } 
      } 


       public class Bar { 
        public Long id; 
        public String bar; 
       } 

       public class Foo { 
        public Long id; 
        public String foo; 
       } 

// created wrapper as @RequestBody can be used only with one argument. 
       public class FooBar { 
         private Foo foo; 
         private Bar bar; 
       } 

爲referece請requestBody with multiple beans

也保證了請求參數名稱與您的bean的屬性相匹配。（即Foo和Bar）。