正在使用核心webApi在asp.net中获取状态：404，statusText：“未找到”，网址…

Question

ASP.NET Core Web API中出现404错误。使用ASP.NET，我将Angular 7用于前端。当我单击表单的保存按钮时，表单数据以角度到达表单方法，但单击保存后显示404错误。对于此表单，我创建了第一个模型，在其中定义了数据库的属性，然后为该模型创建了控制器，并使用了在模型中声明的属性。

Angular服务ts文件：

export class MurderService {
   BaseUrl :string ='';
  constructor( private http:HttpClient, private config:ConfigService) {
    this.BaseUrl=config.getApiURI();
   }

  murderQuestionnaire(data: any){
     var murderBody={
       Dead: data.Dead,
       Wounded: data.Wounded,
       CriminalsInvolved: data.CriminalsInvolved,
       CriminalAppearance: data.CriminalAppearance,
       VehiclesUsed: data.VehiclesUsed,
       WeaponsDescription :data.WeaponsDescription
     };
     return this.http.post(this.BaseUrl +'/Complians' , murderBody);//upto here data reaches 
      successfully
  }
}

此服务的API控制器：

    [Route("api/[controller]")]
    [ApiController]
    public class ComplainMurderController : ControllerBase
    {
        [HttpPost]
        [Route("Complians")]
        //api:/Complians
        public void PostComplainMurder(Complians complian)
        {
            var complianMurder = new Complians()
            {
                Dead = complian.Dead,
                Wounded = complian.Wounded,
                CriminalsInvolved = complian.CriminalsInvolved,
                CriminalAppearence = complian.CriminalAppearence,
                VehiclesUsed = complian.VehiclesUsed,
                WeaponsDescription = complian.WeaponsDescription
            };
            try
            {
               // var result = await complian.Add(complianMurder);
                AuthenticationContext authenticationContext = new AuthenticationContext();
                authenticationContext.Add(complianMurder);
                authenticationContext.SaveChanges();
            }
            catch(Exception ex)
            {
                throw ex;
            }
        }
    }
}

错误

POSThttp://localhost:49601/api/Complians404（未找到）

Answer 1

您的控制器路由定义为api/[controller]（在您的情况下，这将导致api/ComplainMurder）。您的动作定义为Complians。这些是您的实际路线：api/ComplainMurder/Complians，与api/Complians不匹配。

使用此方法更改Angular 7的侧面将对其进行修复：

return this.http.post(this.BaseUrl +'/ComplainMurder/Complians' , murderBody);

旁注：注意拼写不正确/不一致（不要抱怨而是拼写，因为将来很可能导致混乱和/或错误。