从 jquery ajax 调用 wcf 服务 - 出现异常 - 不允许传入请求

Question

异常详情：

A first chance exception of type 'System.InvalidOperationException' occurred in System.ServiceModel.Web.dll Additional information: The HTTP method 'GET' of the incoming request (with URI http://localhost:24342/Test.svc/DoWork?callback=jQuery110203769165082986856_1479380612393&testParameter=TEST&_=1479380612394) is not allowed.

我正在使用 Ajax 嵌入式 WCF 服务。 WCF 客户端是一个 jQuery Ajax 调用。我的代码：

[ServiceContract(Namespace = "testWCFAjax")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Service
{       
    [OperationContract]
    [System.ServiceModel.Web.WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest,
       RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json )]         
    public string DoWork(string testParameter)
    {            
        return "success";
    }
}

网络配置：

<system.serviceModel>
    <behaviors>
        <endpointBehaviors>
            <behavior name="ServiceAspNetAjaxBehavior">
                <enableWebScript/>
            </behavior>
        </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true"/>
        <services>
            <service name="Service">
                <endpoint address="" behaviorConfiguration="ServiceAspNetAjaxBehavior" binding="webHttpBinding" contract="Service"/>
        </service>
    </services>    
</system.serviceModel>

Ajax代码：

<script src="Scripts/jquery-1.9.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
    function CallMyService() {
        $.support.cors = true;
        var param = '{"testParameter": "TEST"}';
        $.ajax({  
            url: 'http://localhost:24342/Test.svc/DoWork',
            data: param,
            type: "POST",
            dataType: "jsonp",                
            contentType: "application/json",                
            success: ServiceSucceeded,
            error: ServiceFailed
        });
    }

Answer 1

我能够通过使用 Ajax-embedded 创建 WCF 服务来解决这个问题。

从 jquery ajax 调用 wcf 服务 - 出现异常 - 不允许传入请求

calling wcf service from jquery ajax - getting exception - incoming request is not allowed

ajax

wcf

jquery

jsonp