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CNFE for loading class using classLoader from JCommander due to wrong META-INF/MANIFEST.MF

See original GitHub issue

Jcommander Version

1.72

Description:

Run jar -xvf jcommander-1.73.jar
Check for META-INF/MANIFEST.MF content
This causes problem to load any class from jcommander using this.getClass().getClassLoader().loadClass(ParameterException.class.getName());

Reproducer Project https://github.com/dipak-pawar/jcommander-classloading/tree/jcommander_classloader

Actual output https://gist.githubusercontent.com/anonymous/de6198fe541a910fb2d6b2208ceede7d/raw/225cbffca7f9aba4c602a08f20afbd0aa0c0a44d/cnfe.log

Expected output Class should load fine.

Actual Content - META-INF/MANIFEST.MF

Manifest-Version: 1.0
Bundle-Description: A Java library to parse command line options
Bundle-License: http://www.apache.org/licenses/LICENSE-2.0
Export-Package: com.beust.jcommander.converters;version="1.73",com.beu
 st.jcommander.defaultprovider;version="1.73",com.beust.jcommander;ver
 sion="1.73",com.beust.jcommander.internal;version="1.73",com.beust.jc
 ommander.validators;version="1.73"
Build-Date: 2018-02-23
Bundle-SymbolicName: jcommander
Bundle-Version: 1.73
Bundle-Name: com.beust.jcommander
Bundle-ManifestVersion: 2
Bnd-LastModified: 1519401535143
Created-By: 1.8.0_121 (Oracle Corporation)
Tool: Bnd-3.5.0.201709291849


Manifest-Version: 1.0
Bundle-Description: A Java library to parse command line options
Bundle-License: http://www.apache.org/licenses/LICENSE-2.0
Export-Package: com.beust.jcommander.converters;version="1.73",com.beu
 st.jcommander.defaultprovider;version="1.73",com.beust.jcommander;ver
 sion="1.73",com.beust.jcommander.internal;version="1.73",com.beust.jc
 ommander.validators;version="1.73"
Build-Date: 2018-02-23
Bundle-SymbolicName: jcommander
Bundle-Version: 1.73
Bundle-Name: com.beust.jcommander
Bundle-ManifestVersion: 2
Bnd-LastModified: 1519401551333
Created-By: 1.8.0_121 (Oracle Corporation)
Tool: Bnd-3.5.0.201709291849

Expected Content - META-INF/MANIFEST.MF

Manifest-Version: 1.0
Bundle-Description: A Java library to parse command line options
Bundle-License: http://www.apache.org/licenses/LICENSE-2.0
Export-Package: com.beust.jcommander.converters;version="1.73",com.beu
 st.jcommander.defaultprovider;version="1.73",com.beust.jcommander;ver
 sion="1.73",com.beust.jcommander.internal;version="1.73",com.beust.jc
 ommander.validators;version="1.73"
Build-Date: 2018-02-23
Bundle-SymbolicName: jcommander
Bundle-Version: 1.73
Bundle-Name: com.beust.jcommander
Bundle-ManifestVersion: 2
Bnd-LastModified: 1519401535143
Created-By: 1.8.0_121 (Oracle Corporation)
Tool: Bnd-3.5.0.201709291849

Issue Analytics

State:
Created 6 years ago
Reactions:1
Comments:8 (3 by maintainers)

Top GitHub Comments

1reaction

fknittelcommented, Apr 1, 2019

@cbeust Unfortunately, this seems to have reappeared for release 1.75:

Caused by: java.lang.ClassNotFoundException: com.beust.jcommander.JCommander
	at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 54 more
Caused by: java.io.IOException: invalid manifest format
	at java.util.jar.Manifest.read(Manifest.java:225)
	at java.util.jar.Manifest.<init>(Manifest.java:69)
	at java.util.jar.JarFile.getManifestFromReference(JarFile.java:194)
	at java.util.jar.JarFile.getManifest(JarFile.java:180)
	at sun.misc.URLClassPath$JarLoader$2.getManifest(URLClassPath.java:981)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:450)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	... 60 more

Also mentioned here: https://github.com/cbeust/jcommander/commit/85cb6f7217e15f62225185ffd97491f34b7b49bb#commitcomment-32810824

0reactions

cbeustcommented, Aug 23, 2019

Fixed in 1.78.