使用Ajax将JSON发送到WCF 3.5

我在将JSON传递给Weight方法时遇到问题。我一直收到

HTTP/1.1 415无法处理消息，因为内容类型为'application/x-www-form-urlencoded；charset=UTF-8“不是预期的类型”text/xml；字符集=utf-8'.

我想我的合同或web.config都有问题。我所有的研究结果都是空的。我将使用jQuery的$.ajax从Web部件调用此服务

接口：

namespace XXX.SharePoint.WebServices
{
    [ServiceContract]
    public interface ICalculators
    {

        [OperationContract]
        [WebInvoke(Method = "POST",
                   BodyStyle = WebMessageBodyStyle.WrappedRequest,
                   RequestFormat = WebMessageFormat.Json,
                   ResponseFormat = WebMessageFormat.Json
        )]
        Single Weight(Single Width, Single Diameter, Single Size, Single Factor);
    }
}

web.config：

<?xml version="1.0"?>
<configuration>
  <system.serviceModel>
    <services>
      <service behaviorConfiguration="XXX.SharePoint.WebServices.CustomServiceBehaviour"
        name="XXX.SharePoint.WebServices.Calculators">
        <endpoint address=""
                  binding="basicHttpBinding"
                  contract="XXX.SharePoint.WebServices.ICalculators" >
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://moss2010/"></add>
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="XXX.SharePoint.WebServices.CustomServiceBehaviour">
          <!-- 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="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

---

一如既往，提前感谢

以下是承载在IIS中的WCF服务的完整工作示例：

[ServiceContract]
public interface ICalculators
{
    [OperationContract]
    [WebInvoke(Method = "POST",
               BodyStyle = WebMessageBodyStyle.Wrapped,
               RequestFormat = WebMessageFormat.Json,
               ResponseFormat = WebMessageFormat.Json
    )]
    float Weight(float width, float diameter, float size, float factor);
}

public class Calculators : ICalculators
{
    public float Weight(float width, float diameter, float size, float factor)
    {
        return 10f;
    }
}

计算器.svc

：

<%@ 
    ServiceHost 
    Language="C#" 
    Debug="true" 
    Service="XXX.SharePoint.WebServices.Calculators" 
    Factory="System.ServiceModel.Activation.WebServiceHostFactory"
    CodeBehind="Calculators.svc.cs" 
%>

在同一ASP.NET应用程序中使用jQuery的消耗：

$.ajax({
    url: '/calculators.svc/Weight',
    type: 'POST',
    contentType: 'application/json',
    data: JSON.stringify({ Width: 1.2, Diameter: 2.3, Size: 3.4, Factor: 4.5 }),
    success: function (result) {
        alert(result.WeightResult);
    }
});

---

请注意在web.config中使用了

webHttpBinding

而不是

basicHttpBinding

（SOAP），以及

.svc

文件中使用的特殊

WebServiceHostFactory

。

您发送的请求使用了表单/url编码的内容类型（当

data

成员的值是对象时，jQuery.ajax的默认值），WCF默认不支持。您可以按照Darin Dimitrov的建议将其更改为发送JSON，将服务操作更改为将流作为参数并自己解析输入，或者扩展WCF以支持表单/url编码的数据。我在另一个问题（在）中发布了一个示例，该问题是后者

---

另外，中的“jQuery支持”预览有一些代码也支持该内容类型。

太棒了！！这帮了大忙！“.svc文件中使用的特殊WebServiceHostFactory”为我做到了：）

$.ajax({
    url: '/calculators.svc/Weight',
    type: 'POST',
    contentType: 'application/json',
    data: JSON.stringify({ Width: 1.2, Diameter: 2.3, Size: 3.4, Factor: 4.5 }),
    success: function (result) {
        alert(result.WeightResult);
    }
});