我的Web-API中出现了这样的AggregateException：
{ “ Message”：“发生错误。”， “ ExceptionMessage”：“发生一个或多个错误。”， “ ExceptionType”：“ System.AggregateException”， “ StackTrace”：“位于System.Threading.Tasks.Task.ThrowIfExceptional（Boolean includeTaskCanceledExceptions）\ r \ n位于 System.Threading.Tasks.Task
1.GetResultCore(Boolean waitCompletionNotification)\r\n at System.Threading.Tasks.Task1.get_Result（）\ r \ n位于 CapstoneAPI.Controllers.LitigantsController.PostLitigantAndImage（LitigantUpdateReq E：\ SE1166 \ Spring中的诉讼方） 2019 \ SWP \ capstone \ CapstoneAPI \ CapstoneAPI \ Controllers \ LitigantsController.cs：line 207 \ r \ n在lambda_method（Closure，Object，Object []）\ r \ n在 System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor。<> c__DisplayClass10.b__9（Object 实例，Object [] methodParameters）\ r \ n位于 System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute（Object 实例，Object []参数）\ r \ n位于 System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync（HttpControllerContext controllerContext，IDictionary2 arguments, CancellationToken cancellationToken)\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.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__0.MoveNext()\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.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext()\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.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()", "InnerException": { "Message": "An error has occurred.", "ExceptionMessage": "Unexpected character encountered while parsing value: {. Path '', line 1, position 1.", "ExceptionType": "Newtonsoft.Json.JsonReaderException", "StackTrace": " at Newtonsoft.Json.JsonTextReader.ReadStringValue(ReadType readType)\r\n at Newtonsoft.Json.JsonTextReader.ReadAsString()\r\n at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)\r\n at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)\r\n at System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.ReadFromStream(Type type, Stream readStream, Encoding effectiveEncoding, IFormatterLogger formatterLogger)\r\n at System.Net.Http.Formatting.JsonMediaTypeFormatter.ReadFromStream(Type type, Stream readStream, Encoding effectiveEncoding, IFormatterLogger formatterLogger)\r\n at System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.ReadFromStream(Type type, Stream readStream, HttpContent content, IFormatterLogger formatterLogger)\r\n at System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.ReadFromStreamAsync(Type type, Stream readStream, HttpContent content, IFormatterLogger formatterLogger)\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.Net.Http.HttpContentExtensions.<ReadAsAsyncCore>d__01.MoveNext（）” } }
这是我收到错误的函数：
public IHttpActionResult PostLitigantAndImage (LitigantUpdateReq litigant)
{
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:56524");
client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
Litigant _litigant = new Litigant
{
ID = litigant.LitigantId,
Name = litigant.Name,
Nation = litigant.Nation,
Sex = litigant.Sex,
Address = litigant.Address,
DoB = litigant.DoB,
HomeTown = litigant.HomeTown,
IdentifyCard = litigant.IdentifyCard,
PortraitImage = litigant.PortraitImage
};
var rcontent = JsonConvert.SerializeObject(_litigant);
var buffer = System.Text.Encoding.UTF8.GetBytes(rcontent);
var content = new ByteArrayContent(buffer);
HttpResponseMessage response1 = client.PostAsync("api/Litigants", content).Result;
content.Headers.ContentType = new MediaTypeWithQualityHeaderValue("application/json");
LitigantImage image = new LitigantImage
{
ID = litigant.LitigantImageId,
Link = litigant.Link,
LitigantID = litigant.LitigantId
};
rcontent = JsonConvert.SerializeObject(image);
buffer = System.Text.Encoding.UTF8.GetBytes(rcontent);
content = new ByteArrayContent(buffer);
HttpResponseMessage response2 = client.PostAsync("api/LitigantImages", content).Result;
if(response1.StatusCode.Equals(HttpStatusCode.Created) && response2.StatusCode.Equals(HttpStatusCode.Created))
{
return Content(HttpStatusCode.Created, litigant);
}
else
{
if (!response1.StatusCode.Equals(HttpStatusCode.Created))
{
return Content(response1.StatusCode, "Error in update class Litigant! Error: \n" + response1.Content.ReadAsAsync<string>().Result);
//return Content(response1.StatusCode, "Error in update class Litigant!");
}
else
{
return Content(response2.StatusCode, "Error in update class LitigantImage! Error: \n" + response1.Content.ReadAsAsync<string>().Result);
//return Content(response2.StatusCode, "Error in update class LitigantImage!");
}
}
}
那么，如何确定代码中导致错误的位置？此外，解决错误的最佳方法是什么？
*该类调用了另外2个api，但是当我测试api时，它们可以正常运行并且不会出现错误。我认为是在我设置要发布到api的内容的同时，但我不知道解决该问题的方法。