像QQ、百度hi等等即时通讯软件都有这种功能，就是你点击客户端的一些按钮，打开的网页都是已经登录了的，因为客户端已经登录过了，不用在网页上重新登录一遍。
今天在百度知道上一个网友遇到这个问题，我就花时间研究一下，帮忙解决了。
用C#实现起来也比较简单（但有一个条件，网页登陆的时候不能有验证码），就是先用HttpWebRequest登陆获取到cookie值，然后再把cookie写到浏览器的cookie目录，最后再打开浏览器。以下为实现代码，对于有什么问题欢迎留言。
代码
using
System.IO;
using System.Text;
using System.Net;
using System.Runtime.InteropServices;
class Login
{
[DllImport( " wininet.dll " , CharSet = CharSet.Auto, SetLastError = true )]
public static extern bool InternetSetCookie( string lpszUrlName, string lbszCookieName, string lpszCookieData);
public static void Main()
{
CookieCollection myCookies = new CookieCollection(); // cookie集合
byte [] data = Encoding.ASCII.GetBytes( " username=XXXXXX&password=******** " ); // 用户名、密码信息
string url = @" http://www.XXX.com/…… " ; // 登陆表单的action地址
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
myRequest.Method = " POST " ;
myRequest.ContentType = " application/x-www-form-urlencoded " ;
myRequest.ContentLength = data.Length;
myRequest.CookieContainer = new CookieContainer();
try
{
Stream newStream = myRequest.GetRequestStream();
newStream.Write(data, 0 , data.Length);
newStream.Close();
}
catch (WebException)
{
throw new WebException( " 网络链接错误! " );
}
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
myCookies.Add(myResponse.Cookies); // 添加cookie
foreach (Cookie cookie in myCookies) // 将cookie设置为浏览的cookie
{
InternetSetCookie(
" http:// " + cookie.Domain.ToString(),
cookie.Name.ToString(),
cookie.Value.ToString() + " ;expires=Sun,22-Feb-2099 00:00:00 GMT " );
}
System.Diagnostics.Process.Start( " http://www.XXX.com/ " ); // 打开浏览器
}
}
using System.Text;
using System.Net;
using System.Runtime.InteropServices;
class Login
{
[DllImport( " wininet.dll " , CharSet = CharSet.Auto, SetLastError = true )]
public static extern bool InternetSetCookie( string lpszUrlName, string lbszCookieName, string lpszCookieData);
public static void Main()
{
CookieCollection myCookies = new CookieCollection(); // cookie集合
byte [] data = Encoding.ASCII.GetBytes( " username=XXXXXX&password=******** " ); // 用户名、密码信息
string url = @" http://www.XXX.com/…… " ; // 登陆表单的action地址
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
myRequest.Method = " POST " ;
myRequest.ContentType = " application/x-www-form-urlencoded " ;
myRequest.ContentLength = data.Length;
myRequest.CookieContainer = new CookieContainer();
try
{
Stream newStream = myRequest.GetRequestStream();
newStream.Write(data, 0 , data.Length);
newStream.Close();
}
catch (WebException)
{
throw new WebException( " 网络链接错误! " );
}
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
myCookies.Add(myResponse.Cookies); // 添加cookie
foreach (Cookie cookie in myCookies) // 将cookie设置为浏览的cookie
{
InternetSetCookie(
" http:// " + cookie.Domain.ToString(),
cookie.Name.ToString(),
cookie.Value.ToString() + " ;expires=Sun,22-Feb-2099 00:00:00 GMT " );
}
System.Diagnostics.Process.Start( " http://www.XXX.com/ " ); // 打开浏览器
}
}
