POST through HTTPs

Question

Hi, I try to perform http POST using
http://martin.nobilitas.com/java/cookies.html
it works.
However, when I try to perform POST using https, by using tips
// Dynamically register the JSSE provider.
java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
// Set this property to use Sun's reference implementation of the HTTPS protocol.
System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
it won't work anyone. I get error
Exception java.io.IOException: Server returned HTTP response code: 500 for URL: https://www.xyz.com/dologin.jsp
any suggestion?
thanks

Answer 1

* Main.java
* Created on April 15, 2007, 10:05 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package oskcookies;
import java.net.*;
import java.io.*;
* @author yccheok
public class Main {
    /** Creates a new instance of Main */
    public Main() {
/** Post a string to an URL and get the reply as a string. Returns an empty
string if things didn't work out. */
    static public String getURLPostString(URL url, String body) {
        StringBuffer sb = new StringBuffer();
     // find the newline character(s) on the current system
        String newline = null;
        try {
            newline = System.getProperty("line.separator");
        } catch (Exception e) {
            newline = "\n";
        try {
         // URL must use the http protocol!
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            conn.setAllowUserInteraction(false); // you may not ask the user
            conn.setDoOutput(true); // we want to send things
            // the Content-type should be default, but we set it anyway
            conn.setRequestProperty( "Content-type", "application/x-www-form-urlencoded" );
            // the content-length should not be necessary, but we're cautious
            conn.setRequestProperty( "Content-length", Integer.toString(body.length()));
            // get the output stream to POST our form data
            OutputStream rawOutStream = conn.getOutputStream();
            PrintWriter pw = new PrintWriter(rawOutStream);
            pw.print(body); // here we "send" our body!
            pw.flush();
            pw.close();
            // get the input stream for reading the reply
            // IMPORTANT! Your body will not get transmitted if you get the
            // InputStream before completely writing out your output first!
            InputStream  rawInStream = conn.getInputStream();
            // get response
            BufferedReader rdr = new BufferedReader(new InputStreamReader(rawInStream));
            String line;
            while ((line = rdr.readLine()) != null) {
                sb.append(line);
                sb.append(newline);
            return sb.toString();
        } catch (Exception e) {
         System.out.println("Exception "+e.toString());
         e.printStackTrace();
        return ""; // an exception occurred
     * @param args the command line arguments
    public static void main(String[] args) {
        // TODO code application logic here
        try {
            // Dynamically register the JSSE provider.
            java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
            // Set this property to use Sun's reference implementation of the HTTPS protocol.
            System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
            URL url = new java.net.URL("https://www.abc.com/dologin.jsp");
            String txtUserName = "txtUserName="+URLEncoder.encode("username");
            String txtPassword = "txtPassword="+URLEncoder.encode("name");
            String _continue = "continue="+URLEncoder.encode("/quotes.jsp");
            String sessionError = "sessionError="+URLEncoder.encode("0");
            String body = txtUserName + "&" + txtPassword + "&" + _continue + "&" + sessionError;
            /* https://www.abc.com/dologin.jsp?txtUserName=username&txtPassword=password&continue=%2Fquotes.jsp&sessionError=0 */
            System.out.println(getURLPostString(url, body));
        catch(java.net.MalformedURLException exp) {
            exp.printStackTrace();
}please take note that, when i directly enter this URL in my web browser (https://www.abc.com/dologin.jsp?txtUserName=username&txtPassword=password&continue=%2Fquotes.jsp&sessionError=0), the page can be login successful.
However, if I execute the above code, I get the following error:
Exception java.io.IOException: Server returned HTTP response code: 500 for URL: https://www.abc.com/dologin.jsp