FULL PRODUCT VERSION :
java version " 1.7.0_21 "
Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java HotSpot(TM) Client VM (build 23.21-b01, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
java.lang.IllegalStateException: zip file closed is raised when using an URL connection to a resource within a JAR:

Please find the stack trace and standalone reproduction code below.


   

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- URLConnection setDefaultUseCaches(false) has been called
- two overlapping URLConnection, with setUseCache(true) are used

This situation occurs in real life when using:
- CXF 2.2.10: java.org.apache.cxf.common.logging.JDKBugHacks call setDefaultUseCaches
- Jetty 8.1.9.v20130131: that use the URL connection to serve static resource of META-INF/resources directory


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No exception throw
ACTUAL -
An IllegalStateException is thrown

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread " main " java.lang.IllegalStateException: zip file closed
at java.util.zip.ZipFile.ensureOpen(ZipFile.java:632)
at java.util.zip.ZipFile.getInputStream(ZipFile.java:345)
at java.util.jar.JarFile.getInputStream(JarFile.java:409)
at sun.net.www.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:162)
at com.mycompany.bug.App.main(App.java:43)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public static void main(String[] args) throws IOException, URISyntaxException, InterruptedException, ExecutionException {
        // Create a jar to reproduce the bug (skip)
        File jarFile = File.createTempFile( " archive " , " jar " );
        JarOutputStream jos = new JarOutputStream(new FileOutputStream(jarFile));
        JarEntry e = new JarEntry( " lorem.txt " );
        jos.putNextEntry(e);
        jos.write( " Lorem ipsum dolor sit amet " .getBytes());
        jos.closeEntry();
        jos.close();
        URI uri = new URI( " jar: " + jarFile.toURI() + " !/lorem.txt " );

        // Bug is reproduced here
        final URL url = uri.toURL();
        url.openConnection().setDefaultUseCaches(false);

        URLConnection con1 = url.openConnection();
        con1.setUseCaches(true);
        // HERE con1.getUseCaches()==true
        con1.connect();
        // HERE con1.getUseCaches()==false

        URLConnection con2 = url.openConnection();
        con2.setUseCaches(true);
        con2.connect();
        con2.getInputStream().close();

        con1.getInputStream().close(); // KO KO KO : Throws IllegalArgumentException: Zip file closed
    }
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
setDefaultUseCaches(true);