Question

我正在尝试根据Microsoft document使用TFS API更新TFS上的工作项的字段。使用页面上列出的示例代码时，api“更新工作项”有问题，响应的返回状态代码为400.无论我做了什么，状态代码总是400，任何人都可以给我一些帮助？

using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using Newtonsoft.Json;



public void UpdateWorkItemUpdateField()
{
   string _personalAccessToken = "xxxxxxxxxxxxxx";
   string _credentials = Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(string.Format("{0}:{1}", "", _personalAccessToken)));
   string _id = "111";

   Object[] patchDocument = new Object[3];

   patchDocument[0] = new { op = "test", path = "/rev", value = "1" };
   patchDocument[1] = new { op = "add", path = "/fields/Microsoft.VSTS.Common.Priority", value = "2" };
   patchDocument[2] = new { op = "add", path = "/fields/System.History", value = "Changing priority" };

  using (var client = new HttpClient())
   {
       client.DefaultRequestHeaders.Accept.Clear();
   client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
   client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", _credentials);

   var patchValue = new StringContent(JsonConvert.SerializeObject(patchDocument), Encoding.UTF8, "application/json"); // mediaType needs to be application/json-patch+json for a patch call

  var method = new HttpMethod("PATCH");
   var request = new HttpRequestMessage(method, "https://accountname.visualstudio.com/_apis/wit/workitems/" + _id + "?api-version=2.2") { Content = patchValue };
   var response = client.SendAsync(request).Result;

   if (response.IsSuccessStatusCode)
   {
       var result = response.Content.ReadAsStringAsync().Result;
   }
   }
}

Answer 1

您使用的是错误的mediaType，它应该是＆＃39; application / json-patch + json ＆＃39;不是＆＃39; application / json＆＃39;。

var patchValue = new StringContent(JsonConvert.SerializeObject(patchDocument), Encoding.UTF8, "application/json-patch+json");

在代码示例中，它已经注意到了您：

// mediaType需要是application / json-patch + json才能进行补丁调用

您正在调用Patch调用，因此请将mediaType更改为application/json-patch+json。

使用TFS API更新工作项时出错（HTTP状态400）

1 个答案: