尝试从 ASP.NET 调用外部 Web 服务返回 401 - DefaultCredentials 为空

Question

失败：

//Note: webserviceProxy inherits from SoapHttpClientProtocol
//App Pool is running as a user with permissions to call the external webservice

var webserviceProxy = new webServiceProxy();

webserviceProxy.PreAuthenticate = true;
webserviceProxy.UseDefaultCredentials = true;

var returnVal = webServiceProxy.DoSomething();  //Fails with 401, webserviceProxy.Credendials shows an empty username, pass, and domain

有效：

//This code works, but I want to assign the current app pool's credentials to the webservice proxy's credentials.  UsingDefaultCredentials doesn't work.  The username, passoword, and domain are always null.

var webserviceProxy = new webServiceProxy();

webserviceProxy.PreAuthenticate = true;
webserviceProxy.Credentials = new NetworkCredential("user", "pass", "domain");

var returnVal = webServiceProxy.DoSomething();  //Fails with 401

如何使用 ASP.NET 应用程序池的身份进行外部 Web 服务调用？似乎没有办法将 System.Security.Principal.WindowsIdentity.GetCurrent() 转换为我可以用于此调用的内容。

谢谢！

Answer 1

也许这篇 Microsoft 支持文章可以帮助您解决问题：

您收到当您浏览使用集成身份验证并托管在 IIS 5.1 或更高版本上的网站时出现错误 401.1

最重要的是，当计算机名称和网站 FQDN 不匹配时，Windows 会保护自身。

另请参阅：

• http: //social.msdn.microsoft.com/Forums/en-US/sharepointdevelopment/thread/a93e5074-a06f-46e2-af82-c743a9ac96b4/
• http://social.msdn.microsoft.com/Forums/en/sharepointdevelopment/thread/ac38e0da-c828- 48b8-aa3f-fb22f30ce581