Recently, a friend asked me how to collect information on some websites with user or password verification. Recently, this was used in the project for verification login, I will share some of the Code with you. This is just a prototype trial I made on the Internet. Although it can be used, the performance may not be so good .. Currently, it is only valid for websites that do not have a logon verification code. You have to write an analytical verification class for get .....
Recently, my work has been messy and I haven't had time to sort it out. These are all temporarily used, and I 've been busy learning Ubuntu recently. net + MySQL project. There is also interstellar.
First open the website, view the source file, and find its logon form.
For example:
<Form name = "login" Action = "loginmain. jsp" method = "Post" target = "_ top">
<Table width = "218" border = "0" cellspacing = "0" cellpadding = "0">
<Tr>
<TD width = "50" Height = "28" class = "Hui"> <Div align = "right"> Username: </div> </TD>
<TD width = "168" Height = "28"> <input class = "Hui" id = "username"
Maxlength = "40" size = "23" name = "username" id = "username"/> </TD>
</Tr>
<Tr>
<TD Height = "28" class = "Hui"> <Div align = "right"> password: </div> </TD>
<TD Height = "28"> <input class = "Hui" id = "passwd"
Maxlength = "40" size = "23" name = "passwd" type = "password" id = "passwd"/> </TD>
</Tr>
</Table>
</Form>
From the above form, we can see that the form submission method is: Post, submitted to loginmain. jsp for processing, there are two form items: username, passwd
Below is the C # imitation login program: Login. CS
Using system;
Using system. Data;
Using system. net;
Using system. text;
Using system. IO;
Using system. Text. regularexpressions;
/** // <Summary>
/// Log on to the website and obtain cookies
/// </Summary>
/// <Returns> Successful Logon Cookie Information </returns>
Public static cookiecontainer get_login ()
...{
Cookiecontainer cc = new cookiecontainer ();
String formurl = "http://blog.hnce.net/loginMain.jsp"; // process the form's absolute URL address
String formdata = "username = slick & passwd = hedy12345"; // parameters to be submitted in the form. Note that they are changed to the information you have registered.
Asciiencoding encoding = new asciiencoding ();
Byte [] DATA = encoding. getbytes (formdata );
Httpwebrequest request = (httpwebrequest) webrequest. Create (formurl );
Request. method = "Post"; // data submission method
Request. contenttype = "application/X-WWW-form-urlencoded ";
Request. contentlength = data. length;
Request. useragent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; sv1;. Net CLR 1.1.4322 )";
// Simulate a useragent
Stream newstream = request. getrequeststream ();
Newstream. Write (data, 0, Data. Length );
Newstream. Close ();
Request. cookiecontainer = cc;
Httpwebresponse response = (httpwebresponse) request. getresponse ();
Cc. Add (response. Cookies );
Stream stream = response. getresponsestream ();
String webcontent = new streamreader (stream, system. Text. encoding. Default). readtoend ();
Return cc;
}
Call the preceding method to obtain information that requires logon.
Cookiecontainer cc = new cookiecontainer ();
Cc = login. get_login (); // get logon cookies
String photoclassurl = "http://blog.hnce.net/xxx.jsp ";
Httpwebrequest myrequest = (httpwebrequest) webrequest. Create (photoclassurl );
Myrequest. cookiecontainer = cc;
Httpwebresponse myresponse = (httpwebresponse) myrequest. getresponse ();
Cc. Add (myresponse. Cookies );
Stream mystream = myresponse. getresponsestream ();
String shtml = new streamreader (mystream, system. Text. encoding. Default). readtoend ();
Shtml is what you see after you log on. The program write is messy. If you have any comments or are unclear, you can send me an email: hedongyang # gmail.com
(# Change)
The above is transferred from: http://blog.csdn.net/hedongyang/archive/2007/05/15/1609379.aspx
