C_(WINFORM)实现模拟POST发送请求登录网站

2、(url);req.Method="POST";req.ContentType="application/x-www-form-urlencoded";req.AllowAutoRedirect=false;CookieContainercookieCon=newCookieContainer();req.CookieContainer=cookieCon;StringBuilderUrlEncoded=newStringBuilder();Char[]reserved={'?','=','&'};byte[]SomeBytes=null

3、;if(paramList!=null){inti=0,j;while(i

4、Append(paramList.Substring(j,1));i=j+1;}SomeBytes=Encoding.UTF8.GetBytes(UrlEncoded.ToString());req.ContentLength=SomeBytes.Length;StreamnewStream=req.GetRequestStream();newStream.Write(SomeBytes,0,SomeBytes.Length);newStream.Close();}else{req.ContentLength=0;}res=(HttpWe

5、bResponse)req.GetResponse();cookieheader=req.CookieContainer.GetCookieHeader(newUri(url));StreamReceiveStream=res.GetResponseStream();Encodingencode=System.Text.Encoding.GetEncoding("GBK");StreamReadersr=newStreamReader(ReceiveStream,encode);Char[]read=newChar[256];intcou

6、nt=sr.Read(read,0,256);while(count>0){Stringstr=newString(read,0,count);strResult+=str;count=sr.Read(read,0,256);}}catch(Exceptione){strResult=e.ToString();}finally{if(res!=null){res.Close();}}returnstrResult;}/**////