System.Data.DataSet.ReadXml - 需要代理身份验证

Question

我有一段旧代码（单个 .aspx 文件），需要通过代理获取。这段代码曾经有效，但现在公司加强了安全性。有问题的代码行是：dataSet.ReadXml(url);网址是 https。它在 .NET 2.0 版上运行 - 这无法升级。我无法更改 web.config 文件。我需要向 .aspx 文件添加什么才能使其工作？我得到的错误是：The remote server returned an error: (407) Proxy Authentication Required.脚本中没有“连接到网络”代码。编辑根据丹的评论，我试过这个：HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);IWebProxy proxy = request.Proxy;                    WebProxy myProxy = new WebProxy();Uri newUri = new Uri("http://10.79.30.190:8080");// Associate the newUri object to 'myProxy' object so that new myProxy settings can be set.myProxy.Address = newUri;// Create a NetworkCredential object and associate it with the // Proxy property of request object.myProxy.Credentials = new NetworkCredential("username", "password");request.Proxy = myProxy;HttpWebResponse response = (HttpWebResponse)request.GetResponse();string responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();System.Data.DataSet dataSet = new System.Data.DataSet();dataSet.ReadXml(responseString);但我仍然遇到同样的错误编辑另一种尝试：HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);IWebProxy proxy = request.Proxy;                    WebProxy myProxy = new WebProxy();Uri newUri = new Uri("http://10.79.30.190:8080");// Associate the newUri object to 'myProxy' object so that new myProxy settings can be set.myProxy.Address = newUri;// Create a NetworkCredential object and associate it with the // Proxy property of request object.myProxy.Credentials = new NetworkCredential("username", "password");request.Proxy = myProxy;HttpWebResponse response = (HttpWebResponse)request.GetResponse();System.Data.DataSet dataSet = new System.Data.DataSet();dataSet.ReadXml(new StreamReader(response.GetResponseStream()));但我仍然遇到同样的错误

Answer 1

这意味着，您的代理服务器凭据不正确，尝试解决此问题的最佳解决方案是：

首先，将此行添加到您的 Web.Config：

<system.net>

    <defaultProxy useDefaultCredentials="true" >

    </defaultProxy>

</system.net>

其次，是通过代码：

service.Proxy = WebRequest.DefaultWebProxy;

service.Credentials = System.Net.CredentialCache.DefaultCredentials; ;

service.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;

第三，是通过代码在两个位置设置凭据：

HttpWebRequest webRequest = WebRequest.Create(uirTradeStream) as HttpWebRequest;

webRequest.Proxy = WebRequest.DefaultWebProxy;

webRequest.Credentials = new NetworkCredential("user", "password", "domain");

webRequest.Proxy.Credentials = new NetworkCredential("user", "password", "domain");

这里最适合你。