Re: [Php-java-bridge-users] php-java-bridge-users Digest, Vol 13, Issue 5

[<php...@li...>]

Hi,
 
 the following code may show the problem. It is written in PHP, but it could have been written in Java as well, as it demonstrates a problem with Java's URLClassLoader:
 
 xtest.java:
 
 public class xtest {   public static String f() {    return "12";    } }
 
 xtest.php:
 
 <?php
 // The following code shows a bug in Java's URLClassLoader
 // While running this script, modify xtest.jar, so that f() returns
 // "123" instead of "12". 
 // You will see that the jar file is fetched (its size changes)
 // but the URLClassLoader discards it and uses the cached
 // jar file from the previous request.
 require_once("http://localhost:8080/JavaBridge/java/Java.inc");
 while(true) {
   $url = new java("java.net.URL", "http://localhost/xtest.jar");
   $conn = $url->openConnection();
   echo $conn->getContentLength(); echo "->";
   $conn->disconnect();
   $loader = java("java.net.URLClassLoader")->newInstance(array($url));
   $clazz = $loader->loadClass("xtest");
   echo $clazz->f(); echo "<br>\n";
   sleep(1);
 }
 ?>


       
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