Question

我已经将我的webapi与get和getById一起使用，但是我的帖子有问题。它将成功地发布到数据库，但邮递员中返回的正文显示路线错误500。到目前为止，我已经在Google上进行了搜索，建议为请求添加名称，这已经完成了，但没有帮助。任何建议将不胜感激。

我尝试为请求添加名称，但是没有运气。

using Contracts;
using Entities.Models;
using Microsoft.AspNetCore.Mvc;
using System;

namespace WebApi.Controllers
{
    [Route("api/location")]
    [ApiController]
    public class LocationController : ControllerBase
    {
        private ILoggerManager _logger;
        private IRepositoryWrapper _repository;

        public LocationController(ILoggerManager logger, IRepositoryWrapper repository)
        {
            _logger = logger;
            _repository = repository;
        }

        [HttpGet(Name = "GetAllLocations")]
        public IActionResult GetAllLocations()
        {
            try
            {
                var locations = _repository.Location.GetAllLocations();

                _logger.LogInfo($"Returned all locations from database.");

                return Ok(locations);
            }
            catch (Exception ex)
            {
                _logger.LogError($"Something went wrong inside GetAllLocations action: {ex.Message}");
                return StatusCode(500, "Internal server error");
            }
        }

        [HttpGet("{id}", Name = "GetLocationById")]
        public IActionResult GetLocationById(int id)
        {
            try
            {
                var location = _repository.Location.GetLocationById(id);

                _logger.LogInfo($"Returned location with id: {id}");
                return Ok(location);

            }
            catch (Exception ex)
            {
                _logger.LogError($"Something went wrong inside GetLocationById action: {ex.Message}");
                return StatusCode(500, "Internal server error");
            }
        }

        [HttpPost(Name = "CreateLocation")]
        public IActionResult CreateLocation([FromBody]Location location)
        {
            try
            {
                if (location == null)
                {
                    _logger.LogError("Location object sent from client is null.");
                    return BadRequest("Location object is null");
                }

                if (!ModelState.IsValid)
                {
                    _logger.LogError("Invalid location object sent from client.");
                    return BadRequest("Invalid model object");
                }

                _repository.Location.CreateLocation(location);

                return CreatedAtRoute("LocationById", new { id = location.Id }, location);
            }
            catch (Exception ex)
            {
                _logger.LogError($"Something went wrong inside CreateLocation action: {ex.Message}");
                return StatusCode(500, "Internal server error");
            }
        }
    }
}

控制台错误是：

info: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[0]
      User profile is available. Using 'C:\Users\User\AppData\Local\ASP.NET\DataProtection-Keys' as key repository and Windows DPAPI to encrypt keys at rest.
Hosting environment: Development
Content root path: C:\working\tripout-api\WebApi
Now listening on: http://localhost:5000
Application started. Press Ctrl+C to shut down.
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 POST http://localhost:5000/api/location application/json 74
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1]
      Route matched with {action = "CreateLocation", controller = "Location"}. Executing action WebApi.Controllers.LocationController.CreateLocation (WebApi)
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1]
      Executing action method WebApi.Controllers.LocationController.CreateLocation (WebApi) with arguments (Entities.Models.Location) - Validation state: Valid
info: Microsoft.EntityFrameworkCore.Infrastructure[10403]
      Entity Framework Core 2.1.8-servicing-32085 initialized 'RepositoryContext' using provider 'Pomelo.EntityFrameworkCore.MySql' with options: None
info: Microsoft.EntityFrameworkCore.Database.Command[20101]
      Executed DbCommand (27ms) [Parameters=[@p0='?' (DbType = Single), @p1='?' (DbType = Single), @p2='?' (Size = 4000)], CommandType='Text', CommandTimeout='30']
      INSERT INTO `location` (`Latitude`, `Longitude`, `Name`)
      VALUES (@p0, @p1, @p2);
      SELECT `LocationId`
      FROM `location`
      WHERE ROW_COUNT() = 1 AND `LocationId` = LAST_INSERT_ID();
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2]
      Executed action method WebApi.Controllers.LocationController.CreateLocation (WebApi), returned result Microsoft.AspNetCore.Mvc.CreatedAtRouteResult in 870.6956ms.
info: Microsoft.AspNetCore.Mvc.Infrastructure.ObjectResultExecutor[1]
      Executing ObjectResult, writing value of type 'Entities.Models.Location'.
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2]
      Executed action WebApi.Controllers.LocationController.CreateLocation (WebApi) in 1283.1481ms
fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
      An unhandled exception has occurred while executing the request.
System.InvalidOperationException: No route matches the supplied values.
   at Microsoft.AspNetCore.Mvc.CreatedAtRouteResult.OnFormatting(ActionContext context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ObjectResultExecutor.ExecuteAsync(ActionContext context, ObjectResult result)
   at Microsoft.AspNetCore.Mvc.ObjectResult.ExecuteResultAsync(ActionContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultAsync(IActionResult result)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResultFilterAsync[TFilter,TFilterAsync]()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResultExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultFilters()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Cors.Infrastructure.CorsMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 1615.8678ms 500 text/html; charset=utf-8

理想情况下，它应该返回200并在发布时显示添加的条目。

Answer 1

尝试通过添加[Route("api/location/getlocationbyid/{id}")]属性为每个方法指定路由。这样做时，可能必须将get属性减小为[HttpGet]。

Answer 2

现在已解决。

对于任何可能阅读此书并对答案有帮助的人来说，问题是我的帖子请求正在返回：

return CreatedAtRoute("LocationById", new { id = location.Id }, location);

，这是GetLocationById获取请求的错误名称。一旦我更改了帖子，请返回：

return CreatedAtRoute("GetLocationById", new { id = location.Id }, location);

一切正常。

状态500：InvalidOperationException：没有路由与提供的值匹配

2 个答案: