化零为整WCF(4) - 异常处理(Exception、FaultException、FaultException、IErrorHandler)

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化零为整WCF(4) - 异常处理(Exception、FaultException、FaultException<T>、IErrorHandler)

作者：webabcd


介绍
WCF(Windows Communication Foundation) - 异常处理：一般Exception的处理，FaultException和FaultException<T>的抛出和处理，使用IErrorHandler处理异常。


示例
1、服务
IHello.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ServiceModel;

namespace WCF.ServiceLib.Exception
}

FaultMessage.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ServiceModel;
using System.Runtime.Serialization;

namespace WCF.ServiceLib.Exception
}

FaultErrorHandler.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ServiceModel.Dispatcher;
using System.Configuration;
using System.ServiceModel;
using System.ServiceModel.Channels;

namespace WCF.ServiceLib.Exception
}

Hello.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ServiceModel;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;

namespace WCF.ServiceLib.Exception

2、宿主
Hello.svc

%>

Web.config

<?xml version="1.0"?>
<configuration>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="ExceptionBehavior">
          <!--httpGetEnabled - 使用get方式提供服务-->
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <!--name - 提供服务的类名-->
      <!--behaviorConfiguration - 指定相关的行为配置-->
      <service name="WCF.ServiceLib.Exception.Hello" behaviorConfiguration="ExceptionBehavior">
        <!--address - 服务地址-->
        <!--binding - 通信方式-->
        <!--contract - 服务契约-->
        <endpoint address="" binding="wsHttpBinding" contract="WCF.ServiceLib.Exception.IHello" />
      </service>
    </services>
  </system.serviceModel>
</configuration>

3、客户端
Hello.aspx

Hello.aspx.cs

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

using System.ServiceModel;

public partial class Exception_Hello : System.Web.UI.Page

Web.config

<?xml version="1.0"?>
<configuration>
  <system.serviceModel>
    <client>
      <!--address - 服务地址-->
      <!--binding - 通信方式-->
      <!--contract - 服务契约-->
      <endpoint address="http://localhost:3502/ServiceHost/Exception/Hello.svc" binding="wsHttpBinding" contract="ExceptionService.IHello" />
    </client>
  </system.serviceModel>
</configuration>

运行结果：
单击"btnHelloException"后显示
抛出Exception异常
The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.

单击"btnHelloFaultException"后显示
错误编码：服务；错误原因：抛出FaultException异常

单击"btnHelloFaultExceptionGeneric"后显示
错误代码：-1；错误信息：抛出FaultException异常；错误原因：为了测试FaultException用的

单击"btnHelloIErrorHandler"后显示
错误信息：IErrorHandler - ProvideFault测试


OK
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