connect to a HTTPS url and post to it

Question

I got a piece of code from the internet. The code connects to a HTTPS and displays the server response. But the code is old, and doesn't work. Can someone please help me to modify the code so it would work.

This was the best resource i could find on the internet. I couldn't find any other.

import java.io.*;
import java.net.*;
import java.security.Security.*;
import com.sun.net.ssl.*;
import com.sun.*; 
 public class Main {
       public static void main(String[] args){
        String cuki=new String();
try { 
System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider()); 
URL url = new URL("https://www.sunpage.com.sg/sso/login.asp"); 
 HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
connection.setDoInput(true); 
connection.setDoOutput(true);

connection.setRequestMethod("POST"); 
connection.setFollowRedirects(true); 


String query = "UserID=" + URLEncoder.encode("williamalex@hotmail.com"); 
query += "&"; 
query += "password=" + URLEncoder.encode("password"); 
query += "&"; 
query += "UserChk=" + URLEncoder.encode("Bidder");
// This particular website I was working with, required that the referrel URL should be from this URL
// as specified the previousURL. If you do not have such requirement you may omit it.
query += "&"; 
query += "PreviousURL=" + URLEncoder.encode("https://www.sunpage.com.sg/sso/login.asp"); 


//connection.setRequestProperty("Accept-Language","it"); 
//connection.setRequestProperty("Accept", "application/cfm, image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, ///"); 
//connection.setRequestProperty("Accept-Encoding","gzip"); 


connection.setRequestProperty("Content-length",String.valueOf (query.length())); 
connection.setRequestProperty("Content-Type","application/x-www- form-urlencoded"); 
connection.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows 98; DigExt)"); 


// open up the output stream of the connection 
DataOutputStream output = new DataOutputStream( connection.getOutputStream() ); 


// write out the data 
int queryLength = query.length(); 
output.writeBytes( query ); 
//output.close();


System.out.println("Resp Code:"+connection.getResponseCode()); 
System.out.println("Resp Message:"+ connection.getResponseMessage()); 


// get ready to read the response from the cgi script 
DataInputStream input = new DataInputStream( connection.getInputStream() ); 


// read in each character until end-of-stream is detected 
for( int c = input.read(); c != -1; c = input.read() ) 
    System.out.print( (char)c ); 
input.close(); 
} 
catch(Exception e) 
{ 
System.out.println( "Something bad just happened." ); 
System.out.println( e ); 
e.printStackTrace(); 
} 
}
}

Answer 1

Try this out:

public void postData() throws Exception {


 HttpClient client = new DefaultHttpClient();
 HttpPost httppost = new HttpPost("https://www.xyz.com");

 List<NameValuePair> list = new ArrayList<NameValuePair>(1);

 list.add(new BasicNameValuePair("name","ABC");

 httppost.setEntity(new UrlEncodedFormEntity(list));

 HttpResponse r = client.execute(httppost);

}