asked on

accessing php session variable in java

hello how do i access the php session variable in java?

java code

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;

/**
 * Send a POST request using URLConnection
 * (Consider using HttpURLConnection or HttpsURLConnection)
 */

/**
 *
 * @author theodore werntz ii
 */
public class WebClientPHP {
    
public static void main(String[] args) {
        
        try {
            // Prepare data
            String data = "UserId" ; // THIS IS THE ELEMENT I NEED TO GET FROM PHP SESSION 
    
            // Prepare connection
            URL url = new URL("http://127.0.0.1/subtest.php?name=" 
                    + data );
            URLConnection connection = url.openConnection();
            connection.setDoOutput(true);  // Needed to write to a URLConnection
            
            // Get the response
            BufferedReader reader = new BufferedReader(
                                          new InputStreamReader(
                                                connection.getInputStream()));
            // Print the response
            String line;
            while ((line = reader.readLine()) != null)
                System.out.println(line);
            
            reader.close();  // Close the reader
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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php code

<applet code=ComputerInfoApplet.class width="400" height="400"
ARCHIVE="ComputerInfoSepFiles.jar">
<param name="mayscript" value="true">
<param name="scriptable" value="true">
</applet>

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so how will i pass a variable from php to java applet and how will i access the variable in java that was passed to the applet?

thanks in advance for your help!

Theodore E. Werntz II

Ray Paseur

PHP can expose any variable value in the browser output stream with a simple echo statement, and can also make a one-time echo that terminates the script with die(). If your Java program can call a PHP script and read the browser output your PHP script could expose the contents of $_SESSION["userid"] with something as simple as this.

<?php
session_start();
if (!empty($_SESSION["userid"]))
{
    die($_SESSION["userid"]);
}
else
{
    die('NO USER ID');
}

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only1wizard

ASKER

but that doesnt help the problem of accessing the php $_SESSION variable in java. I understand that accessing the variable by $_SESSION and or echo $VARIABLE.

what i dont understand is how to access the php variable in java?

thanks in advance for your help!

ASKER CERTIFIED SOLUTION

only1wizard

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only1wizard

ASKER

ive worked out a solution for cross language communication with sessions