使用Webclient下载文件显示错误的数据 [英] Download file using Webclient shows Wrong Data
本文介绍了使用Webclient下载文件显示错误的数据的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
大家好，
我使用以下代码从安全网站下载文件，但在文件夹@C：\Downloads\Filename上创建的文件显示HTML这样的标签
Hi Guys,
I used following code to download file from secured site but file created on folder @"C:\Downloads\Filename" show HTML tags like this
<HTML>
<HEAD><LINK rel="stylesheet" type="text/css" name="defaultstyle" href="/cehttp/html/style.css">
<TITLE>Servlet Response Message</TITLE></HEAD>
<BODY>
<H2 align=center><H2>
<HR>
You are not logged on. Please logon first.
<HR>
</BODY></HTML>
而不是实际的文件内容。
instead of the actual file content.
try
{
WebClient client = new WebClient();
client.Credentials = new System.Net.NetworkCredential("username", "password");
byte[] pageData = client.DownloadData("url");
string pageHtml = Encoding.ASCII.GetString(pageData);
Console.WriteLine(pageHtml);
client.DownloadFile("url", @"C:\Downloads\071213.ACCT");
}
catch (WebException webEx)
{
Console.WriteLine(webEx.ToString());
if (webEx.Status == WebExceptionStatus.ConnectFailure)
{
Console.WriteLine("Are you behind a firewall? If so, go through the proxy server.");
}
}
推荐答案
这是服务器端的一些机制：他们以某种方式检查您已登录，并且您的用户名和密码不够用。我只能猜测他们可能会使用cookies，检查引用，检查会话变量，......
That's some mechanism on the server side: they check somehow that you are logged in, and your username ans password are not enough. I can only guess that they might use cookies, check referers, check session variables,...
这篇关于使用Webclient下载文件显示错误的数据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！
查看全文
