DELETE動詞在郵差工作，但不是與AJAX

Question

我花了幾個小時研究這個，只是無法弄清楚。

首先我告訴你我有什麼

JS：

function deleteContact(id) { 
    let url = baseUrl + "Contact/" + id; 

    var data = { 
     id : id 
    } 

    $.support.cors = true; 
    $.ajax({ 
     url: url, 
     type: 'DELETE', 
     dataType: 'json', 
     data:data 
    }); 
} 

我有聯繫控制器：

public class ContactController : SimpleController<Contact> 
{ 
    public ContactController (IRepository<Contact> repository) : base(repository) 
    { 
    } 
} 

和SimpleController：

public abstract class SimpleController<T> : BaseController 
    where T : class, IEntity, new() 
{ 
    private readonly IRepository<T> _repository; 

    protected SimpleController (IRepository<T> repository) 
    { 
     _repository = repository; 
    } 

    [HttpGet] 
    public virtual IEnumerable<T> Get() 
    { 
     var list = _repository.FindAll().ToList(); 
     return list; 
    } 

    [HttpGet] 
    public virtual T Get (Guid id) 
    { 
     var entity = _repository.Find(id); 
     if (entity == null) 
      throw new HttpResponseException(HttpStatusCode.NotFound); 
     return entity; 
    } 

    [HttpPost] 
    public virtual HttpResponseMessage Post (T entity) 
    { 

     if (entity.Id != Guid.Empty) 
      throw new HttpResponseException(HttpStatusCode.BadRequest); 

     _repository.Add(entity); 
     _repository.Save(); 
     var response = Request.CreateResponse<T>(HttpStatusCode.Created, entity); 
     response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = entity.Id })); 
     return response; 
    } 

    [HttpPatch] 
    public virtual T Patch (T entity) 
    { 
     var matchingItem = _repository.Find(entity.Id); 
     if (matchingItem == null) 
      throw new HttpResponseException(HttpStatusCode.NotFound); 
     _repository.Update(entity); 
     _repository.Save(); 
     return entity; 
    } 

    [HttpDelete] 
    public virtual void Delete (Guid id) 
    { 
     var matchingItem = _repository.Find(id); 
     if (matchingItem == null) 
      throw new HttpResponseException(HttpStatusCode.NotFound); 
     _repository.Delete(id); 
     _repository.Save(); 
    } 
} 

我會說我是postm這工作它刪除項目，但它不使用ajax。

我已經嘗試了很多事情，但仍不斷收到405 與看起來像這樣

{ 
    "name": "Microsoft.ApplicationInsights.Dev.Request", 
    "time": "2016-11-13T12:41:02.0356067Z", 
    "tags": { 
    "ai.device.roleInstance": "James-Desktop.JAILAFILES.com", 
    "ai.operation.name": "OPTIONS Contact [id]", 
    "ai.operation.id": "9UbG1l7oEJA=", 
    "ai.internal.sdkVersion": "web: 2.1.0.363" 
    }, 
    "data": { 
    "baseType": "RequestData", 
    "baseData": { 
     "ver": 2, 
     "id": "9UbG1l7oEJA=", 
     "name": "OPTIONS Contact [id]", 
     "startTime": "2016-11-13T07:41:02.0356067-05:00", 
     "duration": "00:00:02.4510180", 
     "success": false, 
     "responseCode": "405", 
     "url": "http://localhost:52136/api/Contact/96d53daa-deca-4dbd-8c6d-2a236387d258", 
     "httpMethod": "OPTIONS", 
     "properties": { 
     "DeveloperMode": "true" 
     } 
    } 
    } 
} 

響應我還要補充一點，它從來沒有達到所謂的刪除方法，但它確實擊中了簡單的控制器構造。

更新：

public Repository() 
    { 
     _context = new AlltechContext(); 
    } 

    public virtual T Add(T entity) 
    { 
     if (entity.Id == Guid.Empty) 
      entity.Id = Guid.NewGuid(); 
     return _context.Set<T>().Add(entity); 
    } 

    public virtual void Delete(Guid id) 
    { 
     var entity = _context.Set<T>().FirstOrDefault(x => x.Id == id); 
     _context.Set<T>().Remove(entity); 
    } 

    public virtual T Find(Guid id) 
    { 
     return _context.Set<T>().FirstOrDefault(x => x.Id == id); 
    } 

    public int Save() 
    { 
     try 
     { 
      return _context.SaveChanges(); 
     } 
     catch (DbEntityValidationException ex) 
     { 
      var message = ex.EntityValidationErrors.Select(x=>x.ValidationErrors); 
      throw new ArgumentException(message.ToString()); 
     } 
    } 

    public virtual IEnumerable<T> FindAll() 
    { 
     return _context.Set<T>(); 
    } 

    public virtual T Update (T entity) 
    { 
     var actualEntity = _context.Set<T>().FirstOrDefault(x => x.Id == entity.Id); 
     DuplicateItem(actualEntity, entity); 
     _context.Set<T>().Attach(actualEntity); 
     _context.Entry(actualEntity).State = EntityState.Modified; 
     return entity; 
    } 

Answer 1

檢查這些線路是否有你的Webconfig.cs App_Start

using System.Web.Http; 
namespace WebService 
{ 
    public static class WebApiConfig 
    { 
     public static void Register(HttpConfiguration config) 
     { 
      // New code 
      config.EnableCors();//////////////////////////// 

      config.Routes.MapHttpRoute(
       name: "DefaultApi", 
       routeTemplate: "api/{controller}/{id}", 
       defaults: new { id = RouteParameter.Optional } 
      ); 
     } 
    } 
} 

下，如果該行不可轉到包管理器控制檯 使用此命令

Install-Package Microsoft.AspNet.WebApi.Cors 

然後你可能會有這條線可能被通知如果是這樣的話，你可以不加評論。

這一行添加到您的控制器類

[EnableCors(origins: "http://localhost:55249",headers: "*", methods: "*")] 

不要忘了包括命名空間

using System.Web.Http.Cors;