c# - 以编程方式登录网站

Question

如何以编程方式登录网站？

我只想检查提供的网站用户名和密码是否正确。

谢谢。

Answer 1

从 .NET 执行此操作的最简单方法是 Watin .你会做这样的事情:

 using (var browser = new IE("http://mysite.com"))
 {
  browser.TextField(Find.ByName("email")).TypeText("my@email.com");
  browser.TextField(Find.ByName("password")).TypeText("password");
  browser.Button(Find.ByName("login")).Click();

  if (browser.ContainsText("Welcome my@email.com!"))
  {
    // Success
  } 
 }

要用 HttpWebRequest 做到这一点，你会:

var req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.ContentLength = postContent.Length;
req.ContentType = "application/x-www-form-urlencoded";

using (var streamWriter = new StreamWriter(req.GetRequestStream()))
{
    streamWriter.Write(postContent);
}

using (var res = (HttpWebResponse)req.GetResponse())
{
  _status = res.StatusCode;
  using (var streamReader = new StreamReader(res.GetResponseStream()))
  {
    response = streamReader.ReadToEnd();
  }
}       

只需添加第三种方式，您还可以使用 WebClient:

var nvc = new NameValueCollection();
nvc.Add("email", "my@email.com");
nvc.Add("password", "password");

var wc = new WebClient();
byte[] responseArray = wc.UploadValues("http://mysite.com",nvc);
string responseText = Encoding.ASCII.GetString(responseArray));