How to run java class file inside the war file

Question

i am having war file called Sample.war. in this war file i have the main class called "Maintest" .i want to run or execute the Maintest class from out side the war .how to do this

why do you have Main class in war?.. you really need war or jar? — Premraj, May 22 '11 at 12:35

score 4 · Answer 1 · edited May 23 '17 at 11:54

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same answer as I posted here: How do I run a class in a WAR from the command line?

Step 1: Unwrap the War file.

jar -xvf MyWar.war

Step 2: move into the directory

cd WEB-INF

Step 3: Run your main with all dependendecies

java -classpath "lib/*:classes/." my.packages.destination.FileToRun

edited May 23 '17 at 11:54

Community

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answered Oct 21 '15 at 18:25

Bojan Petkovic

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score 4 · Answer 2 · answered May 22 '11 at 12:38

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War files are just Jar files with extra metadata. So, you should be fine to do:

java -classpath application.war Maintest

That will load the class Maintest from the war file application.war and run it

answered May 22 '11 at 12:38

Gagravarr

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Classes in wars are placed under WEB-INF/classes. Your suggestion will not work for these. – Thorbjørn Ravn Andersen May 22 '11 at 12:45
http://stackoverflow.com/a/10021303/566092 - this should work fine, looks so, haven't tested though. – coding_idiot Mar 08 '14 at 03:05

score 1 · Answer 3 · answered May 22 '11 at 12:46

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WAR files are intended for servlet container deployment and not for stand-alone execution.

Hence, there is no easy way to do what you want. Use executable jars for main-method application.

answered May 22 '11 at 12:46

Thorbjørn Ravn Andersen

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score 0 · Answer 4 · answered May 22 '11 at 12:45

The entry point of a war is not a main method like it is for an application. The entry point of a war would be the web.xml, which is read by the application server and used to map urls to servlets.

If you really need to test a war, you could use an embedded application server like Jetty.

score -1 · Answer 5 · answered Jun 09 '15 at 07:25

Unlike executable jar there won't be executable war file and why to run class inside war file. Classes inside war files are directly/indirectly loaded by web container/server. if really want to run a class inside a jar which is inside war file, then putting the jar in classpath it can be run as usual.

How to run java class file inside the war file

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