JSON代替JSONP的WCF響應

好吧，我正在使用WCF服務處理來自我的Web應用程序的請求並以JSONP格式響應。我嘗試了所有可找到的解決方案，研究了文檔（http://msdn.microsoft.com/en-us/library/ee834511.aspx#Y200）和示例項目。JSON代替JSONP的WCF響應

問題是響應對象（json）沒有用URL中提供的回調包裝。

的要求是這樣的：

http://localhost/socialApi/socialApi.svc/api/login?callback=callback&username=AAAAA&password=BBBB

Web.config文件看起來像：

<?xml version="1.0"?> 
<configuration> 
    <system.web> 
    <trace enabled="true"/> 
    <compilation debug="true" targetFramework="4.0"><assemblies><add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=*************" /></assemblies></compilation> 
    </system.web> 
    <system.serviceModel> 
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/> 
    <services> 
     <service name="RestService.socialApi"> 
     <endpoint address="" binding="webHttpBinding" contract="RestService.IsocialApi" bindingConfiguration="webHttpBindingJsonP" behaviorConfiguration="webHttpBehavior"> 
     </endpoint> 
     </service> 
    </services> 
    <behaviors> 
     <serviceBehaviors> 
     <behavior name="ServiceBehaviour"> 
      <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --> 
      <serviceMetadata httpGetEnabled="true" /> 
      <!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information --> 
      <serviceDebug includeExceptionDetailInFaults="true" /> 
     </behavior> 
     </serviceBehaviors> 
     <endpointBehaviors> 
     <behavior name="webHttpBehavior" > 
      <webHttp /> 
     </behavior> 
     </endpointBehaviors> 
    </behaviors> 
    <bindings> 
     <webHttpBinding>   
     <binding name="webHttpBindingJsonP" crossDomainScriptAccessEnabled="true"/> 
     </webHttpBinding> 
    </bindings> 
    <!--<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />--> 
    </system.serviceModel> 
    <system.webServer> 
    <modules runAllManagedModulesForAllRequests="true" /> 
    </system.webServer> 
    <connectionStrings> 
    <add name="AsrAppEntities" connectionString="myconstring**********" /> 
    </connectionStrings> 
</configuration>

我的OperationContract的：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Runtime.Serialization; 
using System.ServiceModel; 
using System.Text; 
using System.ServiceModel.Web; 
using System.IO; 

namespace socialApi 
{ 
    [ServiceContract] 
    public interface IsocialApi 
    { 
     [OperationContract] 
     [WebGet(
      ResponseFormat = WebMessageFormat.Json, 
      BodyStyle = WebMessageBodyStyle.Bare, 
      UriTemplate = "/api/login?username={username}&password={password}")] 
     JsonpAuthenticationResponse Login(string username, string password); 

    } 
}

的響應只是正常的JSON：

{"Message":"unauthorized","Status":400,"Token":null}

我想：

callbackfunction({"Message":"unauthorized","Status":400,"Token":null})

我認爲這事做的Web.config，因爲當我修改的例子和調整的Web.config所以它看起來像我的例子不再運作。你會說我指出了這個問題..但沒有。

要儘可能多的提供儘可能的信息，這裏是這個例子的工作方案：

Web.config文件：

<?xml version="1.0"?> 
<!-- Copyright (c) Microsoft Corporation. All rights reserved. --> 
<configuration> 
    <system.web> 
    <compilation debug="true" targetFramework="4.0" /> 
    <authentication mode="None" /> 
    </system.web> 
    <system.webServer> 
    <modules runAllManagedModulesForAllRequests="true"/> 
    </system.webServer> 
    <system.serviceModel> 
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/> 
    <standardEndpoints> 
     <webScriptEndpoint> 
     <standardEndpoint name="" crossDomainScriptAccessEnabled="true"/> 
     </webScriptEndpoint> 
    </standardEndpoints> 
    </system.serviceModel> 
</configuration>

和類：

//---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation. All rights reserved. 
//---------------------------------------------------------------- 

using System.Runtime.Serialization; 
using System.ServiceModel; 
using System.ServiceModel.Activation; 
using System.ServiceModel.Web; 

namespace Microsoft.Samples.Jsonp 
{ 
    [DataContract] 
    public class Customer 
    {  
     [DataMember] 
     public string Name; 

     [DataMember] 
     public string Address; 
    } 


    [ServiceContract(Namespace="JsonpAjaxService")] 
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] 
    public class CustomerService 
    { 
     [WebGet(ResponseFormat = WebMessageFormat.Json)] 
     public Customer GetCustomer() 
     { 
      return new Customer() { Name="Bob", Address="1 Example Way"}; 
     } 
    } 
}

上面的例子返回一個jsonp對象。這是來自示例的呼叫：

function makeCall() { 
      var proxy = new JsonpAjaxService.CustomerService(); 
      proxy.set_enableJsonp(true); 
      proxy.GetCustomer(onSuccess, onFail, null); 
     }

proxy.set_enableJsonp（true）;可能是我在電話中缺少的東西？但是我不能在我的電話中加上這個，因爲我沒有從同一個解決方案中調用這個服務。

因此，任何想法是關於什麼導致正常的JSON響應，而不是請求JSONP？

來源

2011-04-14 Gerard

問題出在工廠設置。在svc文件的marckup中，我不得不將工廠更改爲System.ServiceModel.Activation.WebScriptServiceHostFactory。

來源

2011-04-26 09:25:59 Gerard

JSON代替JSONP的WCF響應

回答

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