Question

我想弄明白为什么这个叫Ajax的不起作用

 $.ajax({
        type:  GET ,
        url: "http://localhost:8732/Design_Time_Addresses/InMotionGIT_NT.Address.Service/AddressService/json/capitalize",
        data: { streetAddress : JSON.stringify(streetAddress) , consumer :  JSON.stringify(consumer)} ,
        datatype: "jsonp",
        success: function (data) {
            $( body ).append( <div> +data.IDblah+   + data.prueba+ </div> );
            alert(data.IDblah);
        }

接收数据的服务被正确接收,反应正确。为什么我做错了?

我试图将此属性添加到被调用但没有成功的 ajax 上 crossDomain: true

[OperationContract()]
[WebInvoke(Method="GET", RequestFormat=WebMessageFormat.Json, ResponseFormat=WebMessageFormat.Json)]
public string Capitalize(StreetAddress streetAddress,ConsumerInformation consumer)

我错误地得到它为常见

 XMLHttpRequest cannot load Origin http://localhost:50816 is not allowed by Access-Control-Allow-Origin.

<强> UPDATE

我试图在我的 App. config 文件中添加配置, 从而添加响应的页眉, 但未成功。

<system.webServer>
<httpProtocol>
  <customHeaders>
    <add name="Access-Control-Allow-Origin" value="*" />
  </customHeaders>
</httpProtocol>
</system.webServer>

Answer 1

此链接将有助于: < a href=> "http://enable- cors.org/" rel="no follow" >http://enable- cors.org/

您需要将以下信头添加回寄给客户端的回复中 :

// 所有域名 // 所有域名

Access-Control-Allow-Origin:_/code> (允许控制-Allow-Origin):_/code)



或

// 指定具体领域

Access-control-Allow-Origin:http://example.com:8080http://foo.example.com

Answer 2

将此放入您的配置文件的服务侧面

<system.webServer>
<httpProtocol>
  <customHeaders>
    <add name="Access-Control-Allow-Origin" value="*" />
  </customHeaders>
</httpProtocol>
</system.webServer>

对我管用,谢谢

Answer 3

解决方案是创建文件 Global.asax

protected void Application_BeginRequest(object sender, EventArgs e)
{
    HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "http://localhost");
    if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
    {
        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "POST, PUT, DELETE");

        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
        HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
        HttpContext.Current.Response.End();
    }
}

Answer 4

I was getting the same problem when working with my WCF service directly in Visual Studio, in Chrome and Firefox. I fixed it with the following:

以以下函数编辑 Global.asax 文件 :

            private void EnableCrossDomainAjaxCall()
            {
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");

                if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
                {
                    HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
                    HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Authorization, Accept");
                    HttpContext.Current.Response.End();
                }
            }

然后调用此函数

    protected void Application_BeginRequest(object sender, EventArgs e)
    {
       EnableCrossDomainAjaxCall();
    }

更多信息,请访问以下url:

http://blog.blums.eu/2013/09/05/restull-wcf-service-with-cors-and-jquery-and-simport-access-audetitution 。

Answer 5

处理该问题的另一种方式对自办服务来说更好,可找到

Answer 6

对于周转基金服务,您必须发展新的行为,并将其纳入终端配置:

创建信件检查器

    public class CustomHeaderMessageInspector : IDispatchMessageInspector
    {
        Dictionary<string, string> requiredHeaders;
        public CustomHeaderMessageInspector (Dictionary<string, string> headers)
        {
            requiredHeaders = headers ?? new Dictionary<string, string>();
        }

        public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel, System.ServiceModel.InstanceContext instanceContext)
        {
            return null;
        }

        public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
        {
            var httpHeader = reply.Properties["httpResponse"] as HttpResponseMessageProperty;
            foreach (var item in requiredHeaders)
            {
                httpHeader.Headers.Add(item.Key, item.Value);
            }           
        }
    }

创建端点行为并使用信件检查员添加信头

    public class EnableCrossOriginResourceSharingBehavior : BehaviorExtensionElement, IEndpointBehavior
    {
        public void AddBindingParameters(ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
        {

        }

        public void ApplyClientBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)
        {

        }

        public void ApplyDispatchBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.EndpointDispatcher endpointDispatcher)
        {
            var requiredHeaders = new Dictionary<string, string>();

            requiredHeaders.Add("Access-Control-Allow-Origin", "*");
            requiredHeaders.Add("Access-Control-Request-Method", "POST,GET,PUT,DELETE,OPTIONS");
            requiredHeaders.Add("Access-Control-Allow-Headers", "X-Requested-With,Content-Type");

            endpointDispatcher.DispatchRuntime.MessageInspectors.Add(new CustomHeaderMessageInspector(requiredHeaders));
        }

        public void Validate(ServiceEndpoint endpoint)
        {

        }

        public override Type BehaviorType
        {
            get { return typeof(EnableCrossOriginResourceSharingBehavior); }
        }

        protected override object CreateBehavior()
        {
            return new EnableCrossOriginResourceSharingBehavior();
        }
    }

在 Web. config 中注册新行为

<extensions>
 <behaviorExtensions>        
            <add name="crossOriginResourceSharingBehavior" type="Services.Behaviours.EnableCrossOriginResourceSharingBehavior, Services, Version=1.0.0.0, Culture=neutral" />        
  </behaviorExtensions>      
</extensions>

在端点行为配置中添加新行为

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

配置端点

<endpoint address="api" binding="webHttpBinding" behaviorConfiguration="jsonBehavior" contract="Service.IServiceContract" />

友情链接