-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Matt,
On 11/14/14 1:14 PM, Matt Newell wrote: > Greetings, > > I have a need to get version information for classes that I have > been packaged in a war, and loaded into Tomcat 7.0.trunk on Windows > 7. For example: > > > System.out.println(this.getClass().getPackage().getImplementationVersion()); > > Assuming my.war/META-INF/MANIFEST.MF: Manifest-Version: 1.0 > Implementation-Version: 1.0 > > getImplementationVersion() always returns null. > > If I review the code for WebappClassLoader the reason for this is > clear. All roads lead to findResourceInternal(File, String), line > 2983 in 7.x/trunk. This method makes no attempt to load the > manifest from the war. > > My first instinct was that this is a bug. However, I did a quick > check using the same scenario using Wildfly 8 and the behavior is > the same. Given the clarity of the Tomcat code, and that two > robust, well-tested platforms behave the same, I have to assume > this is intentional. > > My question is this: why? Is META-INF/MANIFEST.MF not part of the > war standard? I've googled, but am not enough of a java standards > wonk to know what docs are authoritative on this topic. I've > certainly seen examples that use it. If Tomcat can't/won't do this, you can always load the manifest manually (context.getResource*) and grab the Implementation-Version from it. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJUZmXoAAoJEBzwKT+lPKRYpQgP+gPdc9rySB7Fc3/L02PuoQkj K9W+XLA9K/rCb9hWaS2v8EZajR/S9Vf1EvZtmjvtkoTH5U/w3J+kDfH1K/rmzePZ aXxJajN487Oo22IF4IKe9YafaAHdUd40hpdXuFug3RrYLSpVC/+mczrq+bvAlbMq VRCEWokTTNrISpekZ/Kw/iVmFUny7YC4wclCE5jt9ziHPIdPJpR2w4AmvdEkiwEv 3gqAlTyo7YM5Ty7NWaScA3XlB/69bZfrUhRtBuvtT7wC/Yzk42AJ8VF4xYJ+Wg+S PVNERXGEP+O2eRGED2ShqYHEkaxHYldNbpo1q9ozE8yh9WvToJ0pqv5Gl4Z2WrKr QX2tPwWuGlqzMiaSWpCf7GfUgeSdo0tEPI9LwzUW74Ra2/NyosG1bsLWIahANJnG 5Hu6isQzUbmetaNpn9/FO6id4vS25yICHNH+2RXgw/ekcTqTrkyCoaD7fF+qKD/S zikoKVaXTWwK5f2vGzoctp2SLl2PgSj3RhBUs0snxGoDPEz0Vt02xi5f7nXBS09m 3mdLudyP4Z7nD/fKYYu+w9vxc/hx1Y357lQi3ES2GU2dC2YjAqyiF2n8Nw2k3M0v UJxIb9qCyT7a38buTMRt/zLKoG4UyOy41boB6F6A/2050P6QFWLOhsBOvDW4bQlS oz32lftds1Y6wlsarMoh =09hK -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
