问题从jQuery调用WCF服务库

[System.ServiceModel.OperationContract]
[System.ServiceModel.Web.WebInvoke(
Method= "POST",RequestFormat=System.ServiceModel.Web. Webmessageformat .Json,ResponseFormat=System.ServiceModel.Web.Webmessageformat .Json)]
logonResponse logon(logonRequest logonRequest);


[System.Runtime.Serialization.DataContract]
[ Serializable()]
public class logonRequest
{
[System.Runtime.Serialization.DataMember]
public string EMailAddress;
[System.Runtime.Serialization.DataMember]
public string Password;
}

在我的测试页面中,我可以通过MS Ajax调用： –

<asp:ScriptManager ID ="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/testService.svc" />
</Services>
</asp:ScriptManager>
.
.
.
function clslogonRequest(eMailAddress,password) {
this .EMailAddress = eMailAddress;
this .Password = password;
}

function login(eMailAddress,password) {
var logonRequest = new clslogonRequest(eMailAddress,password);
name.API.IAPI.logon(logonRequest,onSuccess,onFailure);
}

function onSuccess(result) {
$( "#txtSessionId").val(result.SessionId);
$( "#txtUserName").val(result.Name);
$( "#txtUserId").val(result.UserId);
}

哪个工作正常,或通过jQuery $.ajax调用： –

$(document).ready(function() {
$( "#Button1").click(function() {
var logonRequest = new clslogonRequest( '*************','***********');
$.ajax({
type: "POST",url: "testService.svc/logon",data: "{'logonRequest':" + JSON.stringify(logonRequest) + "}",contentType: "application/json; charset=utf-8",dataType: "json",success: function(msg) {
alert(msg.d);
}
});
});
});

哪个没有 – 在FireBug下我可以看到500 Internal Server Error消息并且异常开始

{"ExceptionDetail":{"HelpLink":null,"InnerException":null,"Message":"The token '\"' was expected but found '''.","StackTrace":"   at System.Xml.XmlExceptionHelper.ThrowXmlException(XmlDictionaryReader reader,String res,String arg1,String arg2,String arg3)\u000d\u000a   at System.Xml.XmlExceptionHelper .ThrowTokenExpected(XmlDictionaryReader reader,String expected,Char found)\u000d\u000a   at System.Runtime...

为什么看起来jQuery调用在我特意告诉它时没有传递XML(以及如何阻止它以便尽可能自然地处理来自所有源的调用)？

提前致谢.

编辑：

感谢您的建议,我看了你说的话,并认为我对问题的解释不够明确.

问题不在于JSON没有被发送,它正在被发送并且格式正确,我可以从firebug看到.问题是WCF服务库似乎期待XML并在收到JSON时失败.

为了确保我没有忽略建议的解决方案,这里是web.Config提取 – 我尝试从行为中删除并从services / service / endpoint标签中删除behaviorConfiguration属性,这只会使整个事情失败没有离开页面.

<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name ="MyServiceTypeBehaviors ">
<serviceDebug includeExceptionDetailInFaults="true" />
<serviceMetadata httpGetEnabled="true" />
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name ="AspNetAjaxBehavior">
<enableWebScript/>
</behavior>
</endpointBehaviors>
</behaviors>
<serviceHostingEnvironment aspNetCompatibilityEnabled= "true " />
<services>
<service name ="test.API.API" behaviorConfiguration = " MyServiceTypeBehaviors">
<endpoint behaviorConfiguration="AspNetAjaxBehavior" binding = " webHttpBinding" contract="test.API.IAPI" />
<endpoint contract ="IMetadataExchange" binding= " mexHttpBinding" address="mex" />
</service>
</services>
</system.serviceModel>

提前致谢