HTTP Session with Cookies

How to keep a session with cookies. Demonstrates how to login to WordPress.

Download Chilkat Java Library

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkHttpRequest req = new CkHttpRequest();
    CkHttp http = new CkHttp();

    boolean success;

    //  Any string unlocks the component for the 1st 30-days.
    success = http.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(http.lastErrorText());
        return;
    }

    //  This example will demonstrate maintaining a session with
    //  cookies by doing a simple login to a WordPress blog.
    //  Indicate that cookies are to be saved and re-sent.
    //  Instead of using a cookie file, you may use the string "memory"
    //  to save cookies to memory.
    http.put_CookieDir("memory");
    http.put_SendCookies(true);
    http.put_SaveCookies(true);

    //  Let's first hit the chilkat.wordpress.com login page to make sure
    //  we have any initial cookies...
    String html;
    html = http.quickGetStr("http://chilkat.wordpress.com/wp-login.php");
    if (html == null ) {
        System.out.println(http.lastErrorText());
        return;
    }

    //  Build an HTTP POST request to login
    req.UsePost();
    req.put_Path("/wp-login.php");
    req.AddParam("log","chilkat");
    req.AddParam("pwd","myPassword");
    req.AddParam("rememberme","forever");
    req.AddParam("wp-submit","Login");
    req.AddParam("redirect_to","/wp-admin/");

    req.AddHeader("Referer","http://chilkat.wordpress.com/wp-login.php");

    //  Send the HTTP POST and get the response.  Note: This is a blocking call.
    //  The method does not return until the full HTTP response is received.
    String domain;
    int port;
    boolean ssl;
    domain = "chilkat.wordpress.com";
    port = (int) 80;
    ssl = false;
    CkHttpResponse resp;
    resp = http.SynchronousRequest(domain,port,ssl,req);
    if (resp == null ) {
        System.out.println(http.lastErrorText());
        return;
    }

    //  Is this a 302 redirect?
    if (resp.get_StatusCode() == 302) {

        //  Get the redirect URL:
        String redirectUrl;
        redirectUrl = resp.getHeaderField("Location");

        html = http.quickGetStr(redirectUrl);
        if (html == null ) {
            System.out.println(http.lastErrorText());
        }
        else {
            System.out.println(html);
        }

    }
    else {
        System.out.println(resp.bodyStr());
    }

  }
}