Web API - 如何在響應中返回特定的狀態碼？

Question

我想實現正確的HTTP語義，並根據資源是否已創建或更新以及響應內容描述創建的資源，從我的PUT操作中返回200 OK或201 CREATED。

不幸的是，PUT的Web API示例並未顯示如何執行此操作。你應該做什麼來指定一個錯誤代碼並返回一個響應體？

Answer 1

如果你真的可以返回請求內容，那麼這裏是一個更有效的方法。這將避免所有內容的反序列化和重新序列化。

public HttpResponseMessage Put(HttpRequestMessage request) 
    { 
     // do stuff 

     return new HttpResponseMessage(created ? HttpStatusCode.Created : HttpStatusCode.OK) { 
      Content = request.Content 
     }; 
    } 

Answer 2

// PUT 
    // path/to/{resourceName} 
    public HttpResponseMessage Put(CreateResourceRequest request) 
    { 
     //do stuff... 

     // Return 200 [OK] if it is an update and 201 [CREATED] if the resource is created. 
     // Usually, the response body should be same as the original request. 
     var responseContent = request; 
     return Request.CreateResponse(created ? HttpStatusCode.Created : HttpStatusCode.OK, responseContent); 
    }