从密码保护网站下载自动化

Question

我需要一些帮助，我已经分配了一个工作项目。目前我们手动进入网站，登录，然后每个月从供应商的网站下载2个excel文件。这些文件然后被加载到SQL中。

我们想让这个过程自动化。现在将文件加载到SQL我可以做到，但我不知道如何自动登录到网站输入我的用户详细信息和收集文件。我主要处理SQL，并且具有很少的.NET体验，所以任何代码示例都将非常感谢。

只是为了确认。登录表单位于aspx页面上。只是一个包含用户名&密码字段，忘记密码链接和登录按钮的表格的基本表单

Answer 1

您可以使用webclient或httpwebrequest。

Login to the page with HttpWebRequest

How do you login to a webpage and retrieve its content in C#?

HttpWebRequest的例子：

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://sso.bhmobile.ba/sso/login"); 
    req.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705;)"; 
    req.Method = "POST"; 
    req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; 
    req.Headers.Add("Accept-Language: en-us,en;q=0.5"); 
    req.Headers.Add("Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7"); 
    req.KeepAlive = true; 
    req.Headers.Add("Keep-Alive: 300"); 
    req.Referer ="http://sso.bhmobile.ba/sso/login"; 

    req.ContentType = "application/x-www-form-urlencoded"; 

    String Username = "username"; 
    String PassWord = "Password"; 

    StreamWriter sw = new StreamWriter(req.GetRequestStream()); 
    sw.Write("application=portal&url=http%3A%2F%2Fwww.bhmobile.ba%2Fportal%2Fredirect%3Bjsessionid%3D1C568AAA1FB8B5C757CF5F68BE6ECE65%3Ftype%3Dssologin%26url%3D%2Fportal%2Fshow%3Bjsessionid%3D1C568AAA1FB8B5C757CF5F68BE6ECE65%3Fidc%3D1023278&realm=sso&userid=" + Username + "&password=" + password + "&x=16&y=11"); 
    sw.Close(); 

    HttpWebResponse response = (HttpWebResponse)req.GetResponse(); 


    StreamReader reader = new StreamReader(response.GetResponseStream()); 
    string tmp = reader.ReadToEnd(); 

    foreach (Cookie cook in response.Cookies) 
    { 
     tmp += "\n" + cook.Name + ": " + cook.Value; 
    } 


    Response.Write(tmp); 
    Response.End(); 

Web客户端例如：

WebClient wc = new WebClient(); 
wc.Credentials = new NetworkCredential("username", "password"); 
string url = "http://foo.com";     
try 
{ 
     using (Stream stream = wc.OpenRead(new Uri(url))) 
     { 
       using (StreamReader reader = new StreamReader(stream)) 
      { 
       return reader.ReadToEnd(); 
      } 
     } 
} 
catch (WebException e) 
{ 
     //Error handeling 
}