Java net HTTPS get 302 jump post address

Package com.url.test;


Import java.io.IOException;
Import Java.io.InputStream;
Import java.net.HttpURLConnection;
Import Java.net.URL;
Import Java.security.cert.X509Certificate;


Import javax.net.ssl.HttpsURLConnection;
Import Javax.net.ssl.SSLContext;
Import Javax.net.ssl.TrustManager;
Import Javax.net.ssl.X509TrustManager;


Import Org.apache.commons.lang3.StringUtils;


public class Urlprase {


Get HTTP link 302 after a jump address
public static string gethttp (string url) throws IOException {
URL realurl = new URL (URL);
Opening and linking to URLs
HttpURLConnection conn = (httpurlconnection) realurl.openconnection ();
To set common request properties
Conn.setrequestmethod ("get");
Conn.addrequestproperty ("Accept-charset", "UTF-8;");
Conn.setrequestproperty ("Accept", "*/*");
Conn.setrequestproperty ("Connection", "keep-alive");
Conn.setrequestproperty ("User-agent", "mozilla/4.0" (compatible; MSIE 6.0; Windows NT 5.1; SV1) ");
Conn.setinstancefollowredirects (FALSE);
Establish the actual connection
Conn.connect ();
String location = Conn.getheaderfield ("location");
if (! Stringutils.isblank (location)) {
return gethttp (location);
} else {
return URL;
}
}
Get Http,https link 302 after the jump address
public static string get (string url) throws ioexception{
URL realurl = new URL (URL);
Trustmanager[] TM = {new X509trustmanager () {
Public java.security.cert.x509certificate[] Getacceptedissuers () {
return new java.security.cert.x509certificate[] {};
}


public void checkclienttrusted (x509certificate[] chain, String authtype) {


}


public void checkservertrusted (x509certificate[] chain, String authtype) {


}
} };
try {
Sslcontext sc = sslcontext.getinstance ("TLS");
Sc.init (NULL, TM, New Java.security.SecureRandom ());
Httpsurlconnection.setdefaultsslsocketfactory (Sc.getsocketfactory ());
catch (Exception e) {
E.printstacktrace ();
}


HttpURLConnection conn = (httpurlconnection) realurl.openconnection ();


To set common request properties
Conn.setrequestmethod ("get");
Conn.addrequestproperty ("Accept-charset", "UTF-8;");


Conn.setrequestproperty ("Accept", "*/*");
Conn.setrequestproperty ("Connection", "keep-alive");
Conn.setrequestproperty ("User-agent", "mozilla/4.0" (compatible; MSIE 6.0; Windows NT 5.1; SV1) ");
Conn.setinstancefollowredirects (FALSE);
Conn.setconnecttimeout (3000);
Conn.setreadtimeout (5000);
Establish the actual connection
Conn.connect ();


/*
InputStream InputStream = Conn.getinputstream ();
BufferedReader reader = new BufferedReader (new InputStreamReader (InputStream, "utf-8"));
String readLine = Reader.readline ();
StringBuffer sb = new StringBuffer ();
while (readLine!= null) {
Sb.append (ReadLine);
ReadLine = Reader.readline ();
}
System.out.println (Sb.tostring ());
if (reader!=null) {
Reader.close ();
}*/
String location = Conn.getheaderfield ("location");
if (! Stringutils.isblank (location)) {
return get (location);
} else {
return URL;
}
}


public static void Main (string[] args) {
String url = "https://e.cn.miaozhen.com/r/k=2036534&p=74ZOF&dx=__IPDX__&rt=2&ns=__IP__&ni=__ iesid__&v=__loc__&xa=__adplatform__&o=https://as.kejet.net/ rejcrtdgouzbq0y2ouexnefdnzlbntc2mdgym0q0?u/qke2nju1mtjfqziymthb/o/rejcrtdgouzbq0y2ouex/m/nefdnzlbntc2mdgym0q0/ Q/afaclick?https://topic.m.autohome.com.cn/marketing/2016/12/mggs/";
String url = "Http://trk.maxuscloud.com/c?ev=type:ac ' Acid=pilot ' On=cpid:cc80027;cid:;mpid:campaign001_display_ 01;adfmt:textlink ' at=aid:autohome03;mdm:display;src:;p ubid:autohome;mdmdt:pc ' go=http%3a%2f% 2fsales.saicmaxus.com%2fp%2fpages%2forderv8003.html ";
String url = "Https://kyfw.12306.cn/otn/login/init";
try {
String FinalURL = gethttp (URL);
String FinalURL = Get (URL);
System.out.println (FinalURL);
catch (Exception e) {
E.printstacktrace ();
}
}
}