POST
to a HTTPS secure website from a JAVA Program
This Java sample program shows how to POST to a
HTTPS secure website from a Java porgram.
Secure SSL websites have always been a challenge
for Java programmers. This free Java sample program
illustrates how a Java program connects to an HTTPS
url and POSTs data to it. In this sample, the URL is
a login page which requires the email id and
password to authenticate. After authenticating, the
program just retrieves the reply from the server.
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public class sslpost {
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.anysecuresite.com.sg/aUserVerify.asp");
HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
connection.setDoInput(true);
connection.setDoOutput(true);
String cookieHeader = connection.getHeaderField("set-cookie");
if(cookieHeader != null) {
int index = cookieHeader.indexOf(";");
if(index >= 0)
cuki = cookieHeader.substring(0, index);
connection.setRequestProperty("Cookie", cuki);
}
connection.setRequestMethod("POST");
connection.setFollowRedirects(true);
String query = "UserID=" + URLEncoder.encode("[email protected]");
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.anysecuresite.com.sg/auct.cfm");
//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();
}
}
} |