ZipException: error in opening zip file in JarClassLoader if a JAR file given on class path doesn't exists

[Nicklas Nordborg]

Here is the interesting parts of the stacktrace:

14:37:31,384 ERROR ExtensionsFile:425 - Error loading extensions from JAR file: /home/auster/nicklas/program/tomcat/webapps/base2/WEB-INF/extensions/base-ftpserver.jar
java.util.zip.ZipException: error in opening zip file
	at java.util.zip.ZipFile.open(Native Method)
	at java.util.zip.ZipFile.<init>(ZipFile.java:114)
	at java.util.jar.JarFile.<init>(JarFile.java:133)
	at java.util.jar.JarFile.<init>(JarFile.java:97)
	at net.sf.basedb.util.JarClassLoader.loadJarFile(JarClassLoader.java:269)
	at net.sf.basedb.util.JarClassLoader.loadJarFile(JarClassLoader.java:297)
	at net.sf.basedb.util.JarClassLoader.<init>(JarClassLoader.java:205)
	at net.sf.basedb.util.JarClassLoader.getInstance(JarClassLoader.java:117)
	at net.sf.basedb.clients.web.extensions.ExtensionsFile.loadJar(ExtensionsFile.java:420)

The starting JAR file passed to JarClassLoader.getInstance() has a MANIFEST.MF file where the Class-Path entry lists a non-existing file. The call loadJarFile(JarClassLoader.java:297) is a recursive call to load the non-existing file which fails. I think non-existing files should be ignored and maybe a warning-level message should be logged.

[Nicklas Nordborg]

(In [4321]) Fixes #1041: ZipException: error in opening zip file in JarClassLoader if a JAR file given on class path doesn't exists

[Nicklas Nordborg]

This fix was broken by #1043. The JarClassLoader should not throw an exception if a listed JAR file is missing.

[Nicklas Nordborg]

(In [4389]) Fixes #1041: ZipException: error in opening zip file in JarClassLoader if a JAR file given on class path doesn't exists