How to get Tomcat version number in Java [duplicate]

Question

How do I get the Tomcat/Catalina version number in JAVA?

I've seen lots of how to do it via command line etc. but that's not code I can use, I also cannot use catalina.path as the version number has been stripped from the path.

Please also note I want to use the version in code, so the various JSP solutions that I've looked at also do not work for me.

Thanks

Answer 1

From a JSP

In a jsp file you can print out the version like this:

Tomcat Version : <%= application.getServerInfo() %>

Output:

Tomcat Version : Apache Tomcat/8.0.14

Outside of JSP (Any Java Code)

If you want it outside of a JSP (e.g. in a Servlet or listener or w/e) take a look at the org.apache.catalina.util.ServerInfo class, it has some nice static methods:

System.out.println(ServerInfo.getServerBuilt());
System.out.println(ServerInfo.getServerInfo());
System.out.println(ServerInfo.getServerNumber());

Output:

Sep 24 2014 09:01:51
Apache Tomcat/8.0.14
8.0.14.0

So what you really want is ServerInfo.getServerNumber().

Note:

The ServerInfo class also has a main() method so it can be run as a standalone application too:

java -cp lib/catalina.jar org.apache.catalina.util.ServerInfo

Example output:

Server version: Apache Tomcat/8.0.14
Server built:   Sep 24 2014 09:01:51
Server number:  8.0.14.0
OS Name:        Windows 7
OS Version:     6.1
Architecture:   x86
JVM Version:    1.7.0_55-b13
JVM Vendor:     Oracle Corporation

Answer 2

Try to put this in your JSP <%= application.getServerInfo() %> Look at this