Ошибка внутреннего сервера на постметоде в веб -API ⇐ C#

[Anonymous]

Я создал приложение Maui, которое потребляет WebApi. Я смог получить записи с помощью метода GET, но не мог публиковать. Я не думаю, что это сетевая проблема, потому что я могу получить. Я посмотрел примеры и попробовал приведенный ниже код; < /p>
webapi < /p>
catherment.cs

namespace PPISNetWebApi.Models
{
using System;
using System.Collections.Generic;

public partial class Attempt
{
public int AttemptId { get; set; }
public int DocumentJobId { get; set; }
public int LocationId { get; set; }
public int ServerId { get; set; }
public System.DateTime AttTime { get; set; }
public int AttResltId { get; set; }
public string Verified { get; set; }
public string Comment { get; set; }
public Nullable LocLat { get; set; }
public Nullable LocLon { get; set; }

public virtual AttReslt AttReslt { get; set; }
public virtual DocumentJob DocumentJob { get; set; }
public virtual Location Location { get; set; }
public virtual Server Server { get; set; }
}

< /code>
Aattemptscontroller.cs (только постметод) < /p>

[HttpPost]
[ResponseType(typeof(Attempt))]
public async Task PostAttempt(Attempt attempt)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}

db.Attempts.Add(attempt);
await db.SaveChangesAsync();

return CreatedAtRoute("DefaultApi", new { id = attempt.AttemptId }, attempt);
}
< /code>
Code Maui App < /p>
catherment.cs

namespace PPISNetMobile.Models
{
public class Attempt
{
public int AttemptId { get; set; }
public int DocumentJobId { get; set; }
public int LocationId { get; set; }
public int ServerId { get; set; }
public DateTime AttTime { get; set; }
public int AttResltId { get; set; }
public string Verified { get; set; }
public string Comment { get; set; }
public Nullable LocLat { get; set; }
public Nullable LocLon { get; set; }

}
}
< /code>
Attemptservice.cs
using PPISNetMobile.Models;

namespace PPISNetMobile.Services
{
public class AttemptService : IAttemptService
{
IRestService _restService;

public AttemptService(IRestService service)
{
_restService = service;
}

public Task GetAttemptsAsync()
{
return _restService.RefreshAttemptsDataAsync();
}

public Task SaveAttemptAsync(Attempt attempt, bool isNewItem )
{
return _restService.SaveAttemptAsync(attempt, isNewItem);
}

public Task DeleteAttemptAsync(Attempt attempt)
{
return _restService.DeleteAttemptAsync(attempt.AttemptId);
}
}
}
< /code>
iattemptservice.cs
using PPISNetMobile.Models;

namespace PPISNetMobile.Services
{
public interface IAttemptService
{
Task GetAttemptsAsync();

Task SaveAttemptAsync(Attempt attempt, bool isNewItem);
Task DeleteAttemptAsync(Attempt attempt);
}
}
< /code>
restservice.cs
using System.Diagnostics;
using System.Net.Http.Json;
using System.Text;
using System.Text.Json;
using PPISNetMobile.Models;
using PPISNetMobile.Services;
using PPISNetMobile.ViewModels;

namespace PPISNetMobile.Services
{
public class RestService : IRestService
{
HttpClient _client;
JsonSerializerOptions _serializerOptions;
IHttpsClientHandlerService _httpsClientHandlerService;

public List DocumentJobs { get; private set; }

public List Assignments { get; private set; }

public List AttReslts { get; private set; }

public List Attempts { get; private set; }

public List Locations { get; private set; }

public List Hair { get; private set; }

public List Races { get; private set; }

public List MobileViewModels { get; private set; }

public Task SelectedMobileViewModel { get; private set; }

public List ServiceInfos { get; private set; } = new List();

public List Relations { get; private set; }

public RestService(IHttpsClientHandlerService service)
{
#if DEBUG
_httpsClientHandlerService = service;
HttpMessageHandler handler = _httpsClientHandlerService.GetPlatformMessageHandler();
if (handler != null)
_client = new HttpClient(handler);
else
_client = new HttpClient();
#else
_client = new HttpClient();
#endif
_serializerOptions = new JsonSerializerOptions
{
PropertyNamingPolicy = null,
// WriteIndented = true
};
}

public async Task SaveAttemptAsync(Attempt attempt,bool isNewItem)
{
Uri uri = new Uri(string.Format(Constants.RestUrl3, string.Empty));

try
{

string json = JsonSerializer.Serialize(attempt, _serializerOptions);
var content = new StringContent(json, Encoding.UTF8, "application/json");
HttpResponseMessage response = null;
if (isNewItem)
response = await _client.PostAsync(uri, content);
else
response = await _client.PutAsync(uri, content);

if (response.IsSuccessStatusCode)
Debug.WriteLine(@"\tAttempt successfully saved.");
}
catch (Exception ex)
{
Debug.WriteLine(@"\tERROR {0}", ex.Message);
}
}
}

< /code>
irestservice.cs
using PPISNetMobile.Models;
using PPISNetMobile.ViewModels;

namespace PPISNetMobile.Services
{
public interface IRestService
{
Task RefreshDataAsync();

Task RefreshAssignmentsDataAsync();

Task RefreshAttemptsDataAsync();

Task RefreshAttResltsDataAsync();

Task RefreshServiceInfosDataAsync();

Task RefreshMobileViewModelsDataAsync();

Task RefreshLocDataAsync();

Task RefreshHairDataAsync();

Task RefreshRacesDataAsync();

Task RefreshRelationsDataAsync();

Task SaveLocationAsync(Models.Location location, bool isNewItem);

Task SaveAttemptAsync(Attempt attempt, bool isNewItem);

Task AddServiceInfoAsync(ServiceInfo serviceInfo, bool isNewItem);

Task RefreshMobileViewModelDataAsync();

Task DeleteAttemptAsync(int id);

Task DeleteLocationAsync(int id);
Task DeleteServiceInfoAsync(int id);
}
}
< /code>
attlemptpage.xaml.cs

async void OnSaveButtonClicked(object sender, EventArgs e)
{

int documentJobId = selectedMobileViewModel.DocumentJobId;

await _attemptService.SaveAttemptAsync(new Attempt
{
DocumentJobId = 15313,
LocationId = 16357,
ServerId = 27,
AttResltId = 4,
AttTime = DateTime.Now,
Verified = "verified",
Comment = "comment",
LocLon = (decimal?)1.11111,
LocLat = (decimal?)-2.22222

}, _isNewItem);
await Shell.Current.GoToAsync("///MobileViewPage");
}

< /code>
Я могу получить попытки, но не публиковать попытку. Я продолжаю получать внутреннюю ошибку сервера 500. Любая помощь будет высоко оценена!

Подробнее здесь: https://stackoverflow.com/questions/797 ... to-web-api