WCF响应使用JSON而不是JSONP

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

<?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>

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);

    }
}

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

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

<?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>

//----------------------------------------------------------------
// 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\"};
        }
    }
}

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