header 中不存在 OData V4 批处理请求 'Content-ID'

Question

我们的 OData 端点是 self-hosted(OWIN)。对于单个请求：创建、更新、修补和删除一切都很好，但问题是当我发送批量请求时。看了很多文章，还是解决不了问题。在 OData 文档中它说：我的问题是：如何将 'Content-ID' 设置为批处理请求的 header?

在端点批处理中启用：

HttpConfiguration config = new HttpConfiguration();
var odataBatchHandler = new DefaultODataBatchHandler(new HttpServer(config));
config.MapODataServiceRoute("ODataApi", null, builder.GetEdmModel(), odataBatchHandler);
config.Count().Filter().OrderBy().Expand().MaxTop(null).Select();
appBuilder.UseWebApi(config);

这是测试：

 [TestMethod]
        public void BatchRequestTest()
        {
            var odataAddress = "https://localhost:23170/Sample/Sample/OData/";
            var batchUrl = $"{odataAddress}$batch";
            HttpClient http = new HttpClient();

            // Global batch request
            HttpRequestMessage batchRequest = new HttpRequestMessage(HttpMethod.Post, batchUrl);
            batchRequest.Headers.Authorization = new AuthenticationHeaderValue("Basic", "QWRtaW5pc3RyYXRvcjpwdw==");
            MultipartContent batchContent = new MultipartContent("mixed", "batch_" + Guid.NewGuid().ToString());

            // Third element: POST user creation
            // 1: a multipart content that represents the changeset container
            MultipartContent changeSet = new MultipartContent("mixed", "changeset_" + Guid.NewGuid().ToString());
            // 2: one request message object per post request
            HttpRequestMessage postRequest = new HttpRequestMessage(HttpMethod.Post, $"{odataAddress}/SATeacher");
            postRequest.Headers.Authorization = new AuthenticationHeaderValue("Basic", "QWRtaW5pc3RyYXRvcjpwdw==");

            postRequest.Content = new StringContent("", Encoding.UTF8, "application/json");
            // 3: one message content per corresponding post request
            HttpMessageContent postRequestContent = new HttpMessageContent(postRequest);
            postRequestContent.Headers.Remove("Content-Type");
            postRequestContent.Headers.Add("Content-Type", "application/http");
            postRequestContent.Headers.Add("Content-Transfer-Encoding", "binary");
            // Add this POST content to the changeset
            changeSet.Add(postRequestContent);
            // Add the changeset to the batch content
            batchContent.Add(changeSet);

            // Here we go
            batchRequest.Content = batchContent;
            HttpResponseMessage response = http.SendAsync(batchRequest).Result;
            var responseString = response.Content.ReadAsStringAsync().Result;
        }

这里有一个例外：

{"Message":"An error has occurred.","ExceptionMessage":"The header with name 'Content-ID' was not present in the header collection of the batch operation.","ExceptionType":"Microsoft.OData.ODataException","StackTrace":" Microsoft.OData.ODataBatchReader.CreateOperationRequestMessageImplementation()\r\n 在 Microsoft.OData.ODataBatchReader.InterceptException[T](Func1 action)\r\n at Microsoft.OData.ODataBatchReader.CreateOperationRequestMessage()\r\n at System.Web.OData.Batch.ODataBatchReaderExtensions.<ReadOperationInternalAsync>d__6.MoveNext() in C:\Builds\Eagle\Eagle\Framework\Server\OData\Source\System.Web.OData\OData\Batch\ODataBatchReaderExtensions.cs:line 149\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter1.GetResult()\r\n 在 System.Web.OData.Batch.ODataBatchReaderExtensions.d__1.MoveNext() in C:\Builds\Eagle\Eagle\Framework\Server\OData\Source\System.Web.OData\OData\Batch\ODataBatchReaderExtensions.cs:line 63\r\n--- 从上一个抛出异常的位置开始的堆栈跟踪结束 ---\r\n 在 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）\r\n 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）\r\n 在 System.Runtime.CompilerServices.TaskAwaiter1.GetResult()\r\n at System.Web.OData.Batch.DefaultODataBatchHandler.<ParseBatchRequestsAsync>d__3.MoveNext() in C:\Builds\Eagle\Eagle\Framework\Server\OData\Source\System.Web.OData\OData\Batch\DefaultODataBatchHandler.cs:line 141\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() \r\n at System.Web.OData.Batch.DefaultODataBatchHandler.d__1.MoveNext() in C:\Builds\Eagle\Eagle\Framework\Server\OData\Source\System.Web.OData\OData\Batch\DefaultODataBatchHandler.cs:line 44\r\n--- 结束来自先前抛出异常的位置的堆栈跟踪 --- \r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Batch.HttpBatchHandler.d__0.MoveNext()"}

正在获取异常：HttpResponseMessage response = http.SendAsync(batchRequest).Result;

有什么想法吗？

提前致谢，

Answer 1

我认为错误是描述性的。你能试试吗，postRequestContent.Headers.Add("Content-ID", "1");,

更多信息， http://www.odata.org/documentation/odata-version-3-0/batch-processing/

header 中不存在 OData V4 批处理请求 'Content-ID'

OData V4 batch request 'Content-ID' was not present in the header

c#

odata

owin