【发布时间】：2014-11-22 02:59:42
【问题描述】：
我正在使用 WCF Service 4.5 F/W 开发 REST Full API。请建议如何向客户发送异常或任何业务验证消息。我正在寻找一个非常通用的解决方案，请建议最好的方法。 我尝试了以下一些方法，
在向客户端发送响应之前设置 OutgoingWebResponseContext。
定义的故障合约只能正常工作 添加服务引用（代理类）在 REST FULL 环境中不起作用。
在 catch 块中添加 WebFaultException 类。
WCF Rest Starter Kit - 我收到了一些关于此的文章和帖子，但他们的 CodePlex 官方网站建议不再提供此功能。 link。所以，我不想这样做。
这些没有按预期工作.. 我的示例代码片段： 接口：
[OperationContract]
[FaultContract(typeof(MyExceptionContainer))]
[WebInvoke(Method = "GET", UriTemplate = "/Multiply/{num1}/{num2}", BodyStyle = WebMessageBodyStyle.Wrapped,RequestFormat = WebMessageFormat.Xml, ResponseFormat = WebMessageFormat.Xml)]
string Multiply(string num1, string num2);
实施：
public string Multiply(string num1, string num2)
{
if (num1 == "0" || num2 == "0")
{
try
{
MyExceptionContainer exceptionDetails = new MyExceptionContainer();
exceptionDetails.Messsage = "Business Rule violatuion";
exceptionDetails.Description = "The numbers should be non zero to perform this operation";
//OutgoingWebResponseContext outgoingWebResponseContext = WebOperationContext.Current.OutgoingResponse;
//outgoingWebResponseContext.StatusCode = System.Net.HttpStatusCode.ExpectationFailed;
//outgoingWebResponseContext.StatusDescription = exceptionDetails.Description.ToString();
// throw new WebFaultException<MyExceptionContainer>(exceptionDetails,System.Net.HttpStatusCode.Gone);
throw new FaultException<MyExceptionContainer>(exceptionDetails,new FaultReason("FaultReason is " + exceptionDetails.Messsage + " - " + exceptionDetails.Description));
}
catch (Exception ex)
{
throw new FaultException(ex.Message);
}
}
return Convert.ToString(Int32.Parse(num1) * Int32.Parse(num2));
}
Web.Config：
<system.serviceModel>
<services>
<service name="TestService.TestServiceImplementation" behaviorConfiguration="ServiceBehaviour">
<endpoint binding="webHttpBinding" contract="TestService.ITestService" behaviorConfiguration="webHttp" >
</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="webHttp" >
<webHttp helpEnabled="true" faultExceptionEnabled="true"/>
</behavior>
</endpointBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
客户：
try
{
string serviceUrl = "http://localhost:51775/TestService.cs.svc/Multiply/0/0";
//Web Client
//WebClient webClient = new WebClient();
//string responseString = webClient.DownloadString(serviceUrl);
WebRequest req = WebRequest.Create(serviceUrl);
req.Method = "GET";
req.ContentType = @"application/xml; charset=utf-8";
HttpWebResponse resp = req.GetResponse() as HttpWebResponse;
if (resp.StatusCode == HttpStatusCode.OK)
{
XmlDocument myXMLDocument = new XmlDocument();
XmlReader myXMLReader = new XmlTextReader(resp.GetResponseStream());
myXMLDocument.Load(myXMLReader);
Console.WriteLine(myXMLDocument.InnerText);
}
Console.ReadKey();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
这是我的第一个问题，感谢所有热情的开发者..！
【问题讨论】：
标签： rest web-services wcf exception wcf-rest