It has been a hell of a struggle to upgrade the server (which hosts this site) from Fedora 13 to Fedora 17. The last step was to get my flying apps running in Tomcat again. I confess I don’t track what happens in the java world very closely. And it is a very active world – lots of stuff happening. So it is no surprise I suppose that when you jump four releases there are some adjustments to be made.<\/p>\n
To get tomcat running I had to make the following adjustments, in addition to the obvious stuff of adding the FlightPlan war file to \/usr\/share\/tomcat\/webapps, installing the mysql jdbc connector, and updating \/etc\/tomcat\/tomcat-users.xml.<\/p>\n
Tomcat was unable to find\u00a0org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory. I had to add: \u00a0JAVA_OPTS=”$JAVA_OPTS -Djavax.sql.DataSource.Factory=org.apache.commons.dbcp.BasicDataSourceFactory” in \/etc\/sysconfig\/tomcat. It may be that this is a problem of my own making somehow. In an earlier post<\/a> I commented about the ongoing evolution in the methods available to connect java apps\/servlets with databases. My servlets now use java Datasources, which I think are the “latest thing”, and I’m a little surprised that I have to make special provision for finding the classes. This makes me think it probable that if I understood this better, and did things according to “best practice” in the java world, I wouldn’t have this problem. But as I said before, catching up with all the advancements in java over 7 years is a tall order.<\/p>\n Then Tomcat was unable to find apache-commons-pool.jar, so I had to add a symlink: commons-pool.jar -> \/usr\/share\/java\/apache-commons-pool.jar in \/usr\/share\/tomcat\/lib. This is less surprising I think. The reference to this part of apache commons is coming from the previous (BasicDataSourceFactory) classes. If the former aren’t there, we don’t need this.<\/p>\n The flying apps seem to be running properly now.<\/p>\n","protected":false},"excerpt":{"rendered":" It has been a hell of a struggle to upgrade the server (which hosts this site) from Fedora 13 to Fedora 17. The last step was to get my flying apps running in Tomcat again. I confess I don’t track what happens in the java world very closely. And it is a very active world … Continue reading Getting tomcat running again<\/span>