[英]WCF - Error handling depends on the binding used?
在使用綁定方面,處理異常的方式是否有所不同?
如果使用WSHttpBinding或BasicHttpBanding,則會得到不同的結果。
例如,這是我在客戶端的錯誤處理例程:
//MyClient client = new MyClient("WSBinding");
MyClient client = new MyClient("BasicBinding");
try
{
Result = client.DoTheWork("test");
Console.WriteLine(Result);
}
catch (FaultException e)
{
if (e.Code.SubCode.Name.Equals("BadParameters"))
Console.WriteLine("Bad parameter entered");
Console.WriteLine(e);
}
當我使用WSHttpBinding時,我可以在客戶端上捕獲異常,但是,如果我使用basicHttpHandling卻不能,我會得到:
Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object.
這是我的web.config,
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="basicBinding">
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Windows" />
</security>
</binding>
</basicHttpBinding>
<wsHttpBinding>
<binding name="wsBinding">
<security mode="None">
<transport clientCredentialType="None" />
<message establishSecurityContext="false" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<services>
<service name="MailboxServiceLibrary.MailboxService" behaviorConfiguration="ServiceBehavior" >
<!--endpoint address="" binding="wsHttpBinding" bindingConfiguration="wsBinding" contract="ParServiceLibrary.IParService">
<identity>
<dns value="MyServer.com" />
</identity>
</endpoint-->
<endpoint address="" binding="basicHttpBinding" bindingConfiguration="basicBinding" contract="ParServiceLibrary.IParService"/>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="ServiceBehavior">
<serviceMetadata httpGetEnabled="True"/>
<serviceDebug includeExceptionDetailInFaults="True"/>
</behavior>
</serviceBehaviors>
</behaviors>
似乎BasicHttpBinding使用Soap 1.1格式,對於WSHttpBinding,它使用Soap 1.2格式,但不確定是否可能是原因。
謝謝,
我只是意識到我使用錯誤的方法來捕獲客戶端站點中的異常,
我在用
if (e.Code.SubCode.Name.Equals("MyFaultID"))
而且一定是
if (e.Code.Name.Equals("MyFaultID"))
這樣,在兩個綁定中都可以正常工作。
這在我看來不對:
<security mode="TransportCredentialOnly">
它應該是“ Transport”,“ Message”或“ TransportWithMessageCredential”-不確定是否引起了您的問題,但是您已經為basicHttpBinding添加了安全性,並為wsHttpBinding刪除了安全性,因此不確定是否最終是一個公平的測試?
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