jQuery .ajax（）405（不允许的方法）/跨域 [英] jQuery .ajax() 405 (Method Not Allowed) / Cross Domain

问题描述

我已经看到了很多有关此问题的问题，但我找不到代码中缺少的内容。

我正在实现

  Public Class CustomHeaderMessageInspector 
 Implements IDispatchMessageInspector 
 
 Private requiredHeaders As Dictionary（Of String，String）
 Public Sub New（header As Dictionary（Of String，String））
 requiredHeaders = If（headers，New Dictionary（Of String，String）（））
 End Sub 
 
 Public Function AfterReceiveRequest（ByRef请求As System.ServiceModel.Channels.Message，
 channel As System.ServiceModel.IClientChannel，
 instanceContext As System.ServiceModel.InstanceContext）_ 
 As Object _ 
实现System.ServiceModel.Dispatcher.IDispatchMessageInspector.AfterReceiveRequest 
返回Nothing 
结束函数
 
 Public Sub BeforeSendReply（ByRef reply As System.ServiceModel.Channels.Message，
 correlationState As Object）_ 
 Implements System.ServiceModel.Dispatcher.IDispatchMessageInspector.BeforeSendReply 
 Dim httpHeader = TryCast（reply.Properties（httpResponse），HttpResponseMessageProperty）
 For each item in requiredHeaders 
 httpHeader.Headers.Add（item.Key，item.Value）
 Next 
 End Sub 
 
 End Class 
  

---

  Public Class EnableCrossOriginResourceSharingBehavior 
 Inherits BehaviorExtensionElement 
 Implements IEndpointBehavior 
 
 Public S ub AddBindingParameters（endpoint As ServiceEndpoint，bindingParameters As System.ServiceModel.Channels.BindingParameterCollection）_ 
 Implements System.ServiceModel.Description.IEndpointBehavior.AddBindingParameters 
 
 End Sub 
 
 Public Sub ApplyClientBehavior（endpoint As ServiceEndpoint，clientRuntime As System.ServiceModel.Dispatcher.ClientRuntime）_ 
 Implements System.ServiceModel.Description.IEndpointBehavior.ApplyClientBehavior 
 
 End Sub 
 
 Public Sub ApplyDispatchBehavior（endpoint As ServiceEndpoint，endpointDispatcher As System.ServiceModel.Dispatcher.EndpointDispatcher）_ 
 Implements System.ServiceModel.Description.IEndpointBehavior.ApplyDispatchBehavior 
 Dim requiredHeaders = New Dictionary（Of String，String）（ ）
 
 requiredHeaders.Add（Access-Contr ol-Allow-Origin，*）
 requiredHeaders.Add（Access-Control-Allow-Methods，POST，GET，OPTIONS）
 requiredHeaders.Add（Access-Control- Allow-Headers，Origin，Content-Type，Accept）
 requiredHeaders.Add（Access-Control-Max-Age，1728000）
 
 endpointDispatcher.DispatchRuntime.MessageInspectors .Add（New CustomHeaderMessageInspector（requiredHeaders））
 End Sub 
 
 Public Sub Validate（endpoint As ServiceEndpoint）_ 
 Implements System.ServiceModel.Description.IEndpointBehavior.Validate 
 
结束子
 
公共覆盖ReadOnly属性BehaviorType（）类型
获取
返回GetType（EnableCrossOriginResourceSharingBehavior）
结束获取
结束物业
 
受保护的覆盖函数CreateBehavior（）As Object 
返回新的EnableCrossOriginResourceSharingBehavior（）
结束功能
 
结束等级
  

很抱歉这篇长篇文章，我想要具体。

提前致谢。

---

更新

如果我使用 contentType：text / plain我收到错误在chrome控制台上：

POST http://192.168.0.61:8282/Project.Services.Person/ LookUpPerson 400（错误请求）

解决方案

我有同样的问题，这为我修好了。

更改

  [WebInvoke （方法=发布）] 
  

到

  [WebInvoke（Method =*）] 
  

因为虽然您接受 POST ，但现代浏览器将始终发送 OPTIONS 。

I have seen so many questions on SO about this, but I can't find what is missing in my code.

I'm implementing CORS cause I don't want to use JSONP.

I know this is a preflighted request and I think I'm adding the correct headers.

The error is that the website doesn't seem to like my WCF and every time I do a request, an OPTION method called is made even tho I have the Access-Control-Allow-Methods header.

I just want to make a POST call to my WCF with a contentType: "application/json",

The WCF is self hosted, the web application is on IIS 7.5.

---

What Chrome shows:

---

What fiddler shows

---

Contract

<OperationContract()>
<WebInvoke(Method:="POST",
           RequestFormat:=WebMessageFormat.Json,
           ResponseFormat:=WebMessageFormat.Json,
           BodyStyle:=WebMessageBodyStyle.WrappedRequest)>
<FaultContract(GetType(ServiceFault))>
Function LookUpPerson(person As Person) _
                     As List(Of Person)

---

app.config

<serviceHostingEnvironment multipleSiteBindingsEnabled="true" aspNetCompatibilityEnabled="true" />
<bindings>
  <webHttpBinding>
    <binding name="webHttpBindingWithJsonP"
             crossDomainScriptAccessEnabled="true">
      <security mode="None" />
    </binding>
  </webHttpBinding>
</bindings>

<services>
  <service name="Project.Services.Person">  
    <endpoint address="ws"  binding="wsHttpBinding"     contract="Project.Services.Interfaces.IPublic" />   
    <endpoint address=""    binding="webHttpBinding"    contract="Project.Services.Interfaces.IPublic"
              behaviorConfiguration="jsonBehavior"/>
    <host>
      <baseAddresses>
        <add baseAddress="http://localhost:8732/" />
      </baseAddresses>
    </host>
  </service>
</services>

<extensions>
  <behaviorExtensions>
    <add name="customHeaders"
         type="Project.Services.Utilities.EnableCrossOriginResourceSharingBehavior, Project.Services, Version=1.0.0.0, Culture=neutral"/>
  </behaviorExtensions>
</extensions>

<endpointBehaviors>
  <behavior name="jsonBehavior">
    <webHttp/>
    <customHeaders />
  </behavior>
</endpointBehaviors>

---

javascript

$.ajax({
    url: "http://192.168.0.61:8282/Project.Services.Person/LookUpPerson",
    type: "POST",
    contentType: "application/json",
    crossDomain: true,
    dataType: "json",
    data: { person: JSON.stringify(person) },
    success: function (data) {
        // doing something
    },
    error: function (error) {
        // doing something
    }
});

---

On the WCF I have the following handlers, according to http://enable-cors.org/server_wcf.html

Public Class CustomHeaderMessageInspector
        Implements IDispatchMessageInspector

        Private requiredHeaders As Dictionary(Of String, String)
        Public Sub New(headers As Dictionary(Of String, String))
            requiredHeaders = If(headers, New Dictionary(Of String, String)())
        End Sub

        Public Function AfterReceiveRequest(ByRef request As System.ServiceModel.Channels.Message,
                                            channel As System.ServiceModel.IClientChannel,
                                            instanceContext As System.ServiceModel.InstanceContext) _
                                        As Object _
                                        Implements System.ServiceModel.Dispatcher.IDispatchMessageInspector.AfterReceiveRequest
            Return Nothing
        End Function

        Public Sub BeforeSendReply(ByRef reply As System.ServiceModel.Channels.Message,
                                   correlationState As Object) _
                               Implements System.ServiceModel.Dispatcher.IDispatchMessageInspector.BeforeSendReply
            Dim httpHeader = TryCast(reply.Properties("httpResponse"), HttpResponseMessageProperty)
            For Each item In requiredHeaders
                httpHeader.Headers.Add(item.Key, item.Value)
            Next
        End Sub

    End Class

---

And

Public Class EnableCrossOriginResourceSharingBehavior
        Inherits BehaviorExtensionElement
        Implements IEndpointBehavior

        Public Sub AddBindingParameters(endpoint As ServiceEndpoint, bindingParameters As System.ServiceModel.Channels.BindingParameterCollection) _
                                        Implements System.ServiceModel.Description.IEndpointBehavior.AddBindingParameters

        End Sub

        Public Sub ApplyClientBehavior(endpoint As ServiceEndpoint, clientRuntime As System.ServiceModel.Dispatcher.ClientRuntime) _
                                         Implements System.ServiceModel.Description.IEndpointBehavior.ApplyClientBehavior

        End Sub

        Public Sub ApplyDispatchBehavior(endpoint As ServiceEndpoint, endpointDispatcher As System.ServiceModel.Dispatcher.EndpointDispatcher) _
                                        Implements System.ServiceModel.Description.IEndpointBehavior.ApplyDispatchBehavior
            Dim requiredHeaders = New Dictionary(Of String, String)()

            requiredHeaders.Add("Access-Control-Allow-Origin", "*")
            requiredHeaders.Add("Access-Control-Allow-Methods", "POST, GET, OPTIONS")
            requiredHeaders.Add("Access-Control-Allow-Headers", "Origin, Content-Type, Accept")
            requiredHeaders.Add("Access-Control-Max-Age", "1728000")

            endpointDispatcher.DispatchRuntime.MessageInspectors.Add(New CustomHeaderMessageInspector(requiredHeaders))
        End Sub

        Public Sub Validate(endpoint As ServiceEndpoint) _
            Implements System.ServiceModel.Description.IEndpointBehavior.Validate

        End Sub

        Public Overrides ReadOnly Property BehaviorType() As Type
            Get
                Return GetType(EnableCrossOriginResourceSharingBehavior)
            End Get
        End Property

        Protected Overrides Function CreateBehavior() As Object
            Return New EnableCrossOriginResourceSharingBehavior()
        End Function

    End Class

Sorry for the long post, I wanted to be specific.

Thanks in advance.

---

UPDATE

If I use contentType: "text/plain" I get the error on the chrome console:

POST http://192.168.0.61:8282/Project.Services.Person/LookUpPerson 400 (Bad Request)

解决方案

I had the same issue and this fixed it for me.

Change

[WebInvoke(Method = "Post")]

to

[WebInvoke(Method = "*")]

because although you accept POST, modern browsers will always send OPTIONS.

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