415不支持的媒体类型从$ .ajax调用WCF服务

Question

我试图从ASPX页面调用WCF Web服务,如下所示:

var payload = {
    applicationKey: 40868578
};

$.ajax({
    url: "/Services/AjaxSupportService.svc/ReNotify",
    type: "POST",
    data: JSON.stringify(payload),
    contentType: "application/json",
    dataType: "json"
});

这样做会导致Web服务器返回错误415 Unsupported Media Type.我确定这是WCF服务的配置问题,定义如下:

[OperationContract]
[WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json)]
void ReNotify(int applicationKey);

web.config文件中没有条目,因此假设该服务使用默认配置.

Answer 1

我不是这方面的专家，事实上我也遇到了同样的问题（出于另一个原因）。但是，WCF 服务似乎本身并不支持 AJAX，因此您必须在 web.config 文件中包含以下代码才能启用它。

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

然后在服务类中

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

namespace NAMESPACE
{
    [ServiceBehavior(IncludeExceptionDetailInFaults = true)]
    [ServiceContract(Namespace = "")]
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class SERVICECLASS
    {
        // To use HTTP GET, add [WebGet] attribute. (Default ResponseFormat is WebMessageFormat.Json)
        // To create an operation that returns XML,
        //     add [WebGet(ResponseFormat=WebMessageFormat.Xml)],
        //     and include the following line in the operation body:
        //         WebOperationContext.Current.OutgoingResponse.ContentType = "text/xml";
        [OperationContract]
        public string DoWork()
        {
            // Add your operation implementation here
            return "Success";
        }

        // Add more operations here and mark them with [OperationContract]
    }
}

这是当我添加启用 AJAX 的 WCF 服务时 VS 2012 生成的内容。