| 发表于：2007-02-05 13:45:42 楼主 |
每次登陆http://www2.baidu.com/太麻烦，做了个模拟自动登陆的跳转到另外一页http://www2.baidu.com/query/query_list.php并取html源码，但是有错误，错误在程序中已标出。那位大侠帮帮忙改改。
protected static string cookieheader;
private void form1_load（object sender, eventargs e)
{
string param = "action=&entered_login=luo&entered_password=123&entered_imagecode=ohtm "
byte[] bs = encoding.utf8.getbytes（param);
httpwebrequest req = （httpwebrequest)httpwebrequest.create（ "http://www2.baidu.com/ ");
req.method = "post ";
req.allowautoredirect = true;
req.contenttype = "application/x-www-form-urlencoded ";
req.contentlength = bs.length;
cookiecontainer cookiecon = new cookiecontainer（);
req.cookiecontainer = cookiecon;
using （stream reqstream = req.getrequeststream（))
{
//req.timeout = 3000;
reqstream.write（bs, 0, bs.length);
httpwebresponse res = res = （httpwebresponse)req.getresponse（);
cookieheader = req.cookiecontainer.getcookieheader（new uri（ "http://www2.baidu.com/ "));
httpcontext.current.application.lock（);//错误为未将对象引用到实列
httpcontext.current.application[ "cookieheader "] = cookieheader;
httpcontext.current.application.unlock（);
}
using （webresponse wr = req.getresponse（))
{
streamreader reader = new streamreader（wr.getresponsestream（), encoding.default);
richtextbox1.text = reader.readtoend（);
}
getpage（);//用已有的cookie身份跳转的另外一页
}
public static string getpage（)
{
httpwebresponse res = null;
string strresult = " ";
try
{
string param = "action=&entered_login=luo&entered_password=123&entered_imagecode=ohtm "
string url= "http://www2.baidu.com/query/query_list.php ";
httpwebrequest req = （httpwebrequest)webrequest.create（url);
req.method = "post ";
req.keepalive = true;
req.contenttype = "application/x-www-form-urlencoded ";
cookiecontainer cookiecon = new cookiecontainer（);
req.cookiecontainer = cookiecon;
req.cookiecontainer.setcookies（new uri（url),cookieheader);
byte[] somebytes = null;
somebytes = encoding.utf8.getbytes（param);
req.contentlength = somebytes.length;
stream newstream = req.getrequeststream（);
newstream.write（somebytes, 0, somebytes.length);
newstream.close（);
res = （httpwebresponse)req.getresponse（);
stream receivestream = res.getresponsestream（);
encoding encode = system.text.encoding.getencoding（ "utf-8 ");
streamreader sr = new streamreader（ receivestream, encode );
richtextbox1.text = reader.readtoend（);
}
} |
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