Java htttp login Return cookie access to other resources through cookies

Import java.io.*;
Import java.net.HttpURLConnection;
Import java.net.MalformedURLException;
Import Java.net.URL;
Import Java.util.Iterator;
Import java.util.List;
Import Java.util.Map;
Import Java.util.Set;

/**
* Created by Yaoyao on 16/3/19.
*/
public class Test0319 {


int counturl=0;


public static void Main (string[] args) {

try {
String cookie = new test0319 (). Login ();
New test0319 (). getonehtml ("Http://192.168.1.103:8090/front/sku/list", "Utf-8", "[Rememberme=deleteme; Path=/front; max-age=0; Expires=fri, 18-mar-2016 16:15:23 GMT, Jsessionid=68683d96f61b34c1cdfb5431aba5b4ba; path=/front/; HttpOnly] ");
} catch (IOException e) {
E.printstacktrace ();
} catch (Interruptedexception e) {
E.printstacktrace ();
}
}




public string getonehtml (string htmlurl,string encoding,string cookie) throws IOException, Interruptedexception
{

Up to 5 repeated requests to reverse the crawl
if (counturl==5) {
counturl=0;
return "0";
}
System.out.println (cookie);
StringBuilder content = new StringBuilder ();
HttpURLConnection httpconn = null;
Try
{
URL url = new URL (htmlurl);

Httpconn = (httpurlconnection) url.openconnection ();
Header setting, Get method

Httpurlconnection.setfollowredirects (TRUE);
Httpconn.setrequestmethod ("GET");
Httpconn.setrequestproperty ("User-agent", "mozilla/5.0" (X11; Linux x86_64) applewebkit/537.36 (khtml, like Gecko) chrome/33.0.1750.152 safari/537.36 ");
Httpconn.setrequestproperty ("Connection", "keep-alive");
Httpconn.setrequestproperty ("Accept", "Text/html,application/xhtml+xml,application/xml");
Httpconn.setrequestproperty ("Content-type", "application/x-www-form-urlencoded");
Httpconn.setrequestproperty ("Cookie", cookie);
Httpconn.setrequestproperty ("Cache-control", "No-cache, No-store");
Httpconn.setrequestproperty ("Host", "http://192.168.1.103:8090");
Httpconn.setconnecttimeout (20000);
Httpconn.setreadtimeout (20000);
Logger.info (Httpconn.getresponsemessage ());
BufferedReader in = new BufferedReader (New InputStreamReader (Httpconn.getinputstream (), encoding)),////Open connection, get content
String temp;
while (temp = in.readline ()) = null)
Replace point some useless to symbol
{
Content.append (temp);
}
In.close ();
Httpconn.disconnect ();

}
catch (final malformedurlexception me)
{
System.out.println ("URL does not exist!");
Me.getmessage ();
throw me;
}
catch (final filenotfoundexception me)
{
System.out.println (htmlurl+ "anti-crawl Start");
return "0";
}
catch (Final IOException e)
{
E.printstacktrace ();
SYSTEM.OUT.PRINTLN ("Anti-crawl start:" +htmlurl+ "number of times:" +counturl++);
Httpconn.disconnect ();
Thread.Sleep (20000);
Return this.getonehtml (Htmlurl, Encoding,cookie);
}

System.out.println (SB);
counturl=0;
Httpconn.disconnect ();

System.out.println (Content.tostring ());
return content.tostring ();

}

Public String Login () throws Malformedurlexception, Interruptedexception {

String Htmlurl = "Http://192.168.1.103:8090/front/login";
HttpURLConnection httpconn = null;
String cookie = "";
try {
URL url = new URL (htmlurl);

Httpconn = (httpurlconnection) url.openconnection ();

Httpurlconnection.setfollowredirects (TRUE);
Httpconn.setrequestmethod ("POST");
Httpconn.setrequestproperty ("User-agent", "mozilla/5.0" (X11; Linux x86_64) applewebkit/537.36 (khtml, like Gecko) chrome/33.0.1750.152 safari/537.36 ");
Httpconn.setrequestproperty ("Connection", "keep-alive");
Httpconn.setrequestproperty ("Accept", "Text/html,application/xhtml+xml,application/xml");
Httpconn.setrequestproperty ("Content-type", "application/x-www-form-urlencoded");
Httpconn.setrequestproperty ("Cache-control", "No-cache, No-store");
Httpconn.setrequestproperty ("Host", "Http://192.168.1.103:8090/front");
Httpconn.setrequestproperty ("Referer", "https://www.linkedin.com/uas/login?session_redirect=http:// Www.linkedin.com/profile/view?id=222323610&authType=name&authToken=fcEe ");
Post method, redirection settings
Httpconn.setdooutput (TRUE);
Httpconn.setdoinput (TRUE);
Httpconn.setusecaches (FALSE);
Httpconn.setinstancefollowredirects (FALSE);
Write, the Post method must transmit data in a stream-write manner
StringBuffer str_buf = new StringBuffer (4096);
OutputStream OS = Httpconn.getoutputstream ();
Str_buf.append ("username"). Append ("="). Append ("13062779665"). Append ("&");
Str_buf.append ("Password"). Append ("="). Append ("111111"). Append ("&");
Str_buf.append ("Session_redirect"). Append ("="). Append (Redicturl);
Os.write (Str_buf.tostring (). GetBytes ());
Os.flush ();
Os.close ();
Httpconn.setconnecttimeout (20000);
Httpconn.setreadtimeout (20000);
Get redirects and cookies
String redicturl= Httpconn.getheaderfield ("location");
SYSTEM.OUT.PRINTLN ("First request redirect Address location=" +redicturl);

Get cookies
map<string, list<string>> map = Httpconn.getheaderfields ();
System.out.println (Map.tostring ());
Set set = Map.keyset ();
for (Iterator Iterator = Set.iterator (); Iterator.hasnext ();) {
String key = String.valueof (Iterator.next ());
if (key! = null) {
if (Key.equals ("Set-cookie")) {
System.out.println ("key=" + key + ", start to get Cookie" +map.get ("Set-cookie"). toString ());
list<string> list = Map.get (key);
for (String str:list) {
String temp = str.split ("=") [0];
SYSTEM.OUT.PRINTLN (temp);

The cookie contains very much information and the debug discovery login only needs this message
if (Temp.equals ("Li_at")) {
cookie = str;
return cookie;
//                            }

}
}
}

}
Httpconn.disconnect ();

} catch (Final malformedurlexception me) {
System.out.println ("URL does not exist!");
Me.getmessage ();
throw me;
} catch (Final FileNotFoundException me) {
System.out.println (Htmlurl + "anti-crawl Start");
return "0";
} catch (Final IOException e) {
E.printstacktrace ();
SYSTEM.OUT.PRINTLN ("Anti-crawl start:" + Htmlurl + "number of times:" + counturl++);
Httpconn.disconnect ();
Thread.Sleep (20000);
return login ();
}
System.out.println (cookie);
return cookie;
}}

Java htttp login Return cookie access to other resources through cookies