WCF服务异常良好做法 [英] Wcf service exception good practices

问题描述

我开发分布式应用程序。在这里面，有我必须验证角色和权限集。结果
是一个很好的初步实践抛出的例外，每例如，未经授权的访问？结果
或我应该把一些信息返回给客户端？

I am developing a distributed application. In it, there are roles and sets of permissions that I must validate.
Is a good pratice to throw an exception, in per example, unauthorized access?
Or should I send some message back to the client?

推荐答案

在您的服务操作，你可以指定一个 FaultContract 的，这将有助于两个目的，像这样：

On your service operation, you can specify a FaultContract that will serve both purposes like so:

[OperationContract]
[FaultContract(typeof(MyServiceFault))]
void MyServiceOperation();

注意MyServiceFault必须标有DataContract和DataMember属性，以同样的方式将复杂类型

Note that MyServiceFault must be marked with DataContract and DataMember attributes, in the same way you would a complex type:

[DataContract]
public class MyServiceFault
{
    private string _message;

    public MyServiceFault(string message)
    {
        _message = message;
    }

    [DataMember]
    public string Message { get { return _message; } set { _message = value; } }
}

在服务端，你就能够：

throw new FaultException<MyServiceFault>(new MyServiceFault("Unauthorized Access"));

和在客户端：

try
{
    ...
}
catch (FaultException<MyServiceFault> fault)
{
    // fault.Detail.Message contains "Unauthorized Access"
}

这篇关于WCF服务异常良好做法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！