Use WebClient to simulate website login and browsing through Post and Get of Http protocol

In some cases, we often need to simulate browser operations, such as simulated voting, simulated clicks, or Web game plug-ins. The encapsulated WebClient in C # can implement Http Post and Get in some scenarios where the requirements are not counted. For details, see the code:

 

Using System;

Using System. Collections. Generic;

Using System. Linq;

Using System. Text;

Using System. Net;

 

Namespace TestCNM

{

Public class WebClientExt

{

Public string Get (string Url, string Referer, Encoding Encoder, ref string CookieStr)

{

String result = "";

 

WebClient myClient = new WebClient ();

MyClient. Headers. Add ("Accept :*/*");

MyClient. headers. add ("User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0 ;. NET4.0E ;. NET4.0C; InfoPath.2 ;. net clr 2.0.50727 ;. net clr 3.0.04506.648 ;. net clr 3.5.21022 ;. net clr 3.0.20.6.2152 ;. net clr 3.5.30729; SE 2.X MetaSr 1.0 )");

MyClient. Headers. Add ("Accept-Language: zh-cn ");

MyClient. Headers. Add ("Content-Type: multipart/form-data ");

MyClient. Headers. Add ("Accept-Encoding: gzip, deflate ");

MyClient. Headers. Add ("Cache-Control: no-cache ");

If (CookieStr! = "")

{

MyClient. Headers. Add (CookieStr );

}

MyClient. Encoding = Encoder;

Result = myClient. DownloadString (Url );

If (CookieStr = "")

{

CookieStr = myClient. ResponseHeaders ["Set-Cookie"]. ToString ();

CookieStr = GetCookie (CookieStr );

}

Return result;

}

Public string Post (string Url, string Referer, Encoding Encoder, ref string CookieStr, string Data)

{

String result = "";

 

WebClient myClient = new WebClient ();

MyClient. Headers. Add ("Accept :*/*");

MyClient. headers. add ("User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0 ;. NET4.0E ;. NET4.0C; InfoPath.2 ;. net clr 2.0.50727 ;. net clr 3.0.04506.648 ;. net clr 3.5.21022 ;. net clr 3.0.20.6.2152 ;. net clr 3.5.30729; SE 2.X MetaSr 1.0 )");

MyClient. Headers. Add ("Accept-Language: zh-cn ");

MyClient. Headers. Add ("Content-Type: multipart/form-data ");

MyClient. Headers. Add ("Accept-Encoding: gzip, deflate ");

MyClient. Headers. Add ("Cache-Control: no-cache ");

If (CookieStr! = "")

{

MyClient. Headers. Add (CookieStr );

}

MyClient. Encoding = Encoder;

Result = myClient. UploadString (Url, Data );

If (CookieStr = "")

{

CookieStr = myClient. ResponseHeaders ["Set-Cookie"]. ToString ();

CookieStr = GetCookie (CookieStr );

}

Return result;

}

Private string GetCookie (string CookieStr)

{

String result = "";

 

String [] myArray = CookieStr. Split (',');

If (myArray. Count ()> 0)

{

Result = "Cookie :";

Foreach (var str in myArray)

{

String [] CookieArray = str. Split (';');

Result + = CookieArray [0]. Trim ();

Result + = ";";

}

Result = result. Substring (0, result. Length-2 );

}

Return result;

}

}

}

 

Author: aofengdaxia