DO NOT REPLY [Bug 5684] - WEB-INF/lib jar file loading and operations problems.

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=5684

WEB-INF/lib jar file loading and operations problems.





------- Additional Comments From [EMAIL PROTECTED]  2002-01-04 02:54 -------
One workaround is to use straight classes rather then jars (i.e. unpack your
jars in the classes directory).

As for the ZIP class problems, I've submitted this bug to Sun a number of times
and I was able to replicate it on Windows and Linux. But, they wouldn't buy it.
The following sample program illustrates the problem:

------------------------------------------------------
import java.io.*;
import java.net.*;
import java.util.*;

class ZipFileTest extends ClassLoader{

  public static void main(String argv[]){
    LineNumberReader in=new LineNumberReader(new
InputStreamReader(System.in));

    while(true){
      Properties p=new Properties();
      try{
        // Get the resource using the first ClassLoader object (first
set)
        ZipFileTest t=new ZipFileTest();
        System.err.println("t="+t);

        InputStream i=t.getResourceAsStream("/some/properties/file.props");
        System.err.println("i="+i);
        p.load(i);
        p.save(System.out,"");

        // Get rid of the objects
        i=null; t=null; p=null;

        // Wait for user input while replacing the jar
        in.readLine();
      } catch(Throwable t){
        System.out.println(t);
        t.printStackTrace(System.out);
        System.exit(1);
      }
    }
  }
}
------------------------------------------------------

All you need to do is have a JAR file with a properties files inside it (make
sure you change the name). Run the  program and it will print out the properties
file. After that it'll wait for your input. At that point replace the JAR file
with another JAR file that contains the same properties file, but is otherwise
different. After the input is received, the program will fail while reading the
JAR file, given the JAR file is sufficiently different (i.e. at times there will
be no problems).

Bojan

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