Pass user defined environment variable to tomcat

Question

I am using the eclipse for web application coding. Within this I passed environment variable like :

1. Project--> Run as --> Run Configuration. And selected Environment tab.
2. Add new environment variable with name APP_MASTER_PASSWORD and its value.

I can access this value in java code as System.getenv("APP_MASTER_PASSWORD").

But now I want to pass this environment variable to tomcat and access it in application instead of passing thru eclipse.

So how can I pass such variable to tomcat?

I googled about it. But I didn't get any solution.

Answer 1

You can use setenv.bat or .sh to pass the environment variables to the Tomcat.

Create CATALINA_BASE/bin/setenv.bat or .sh file and put the following line in it, and then start the Tomcat.

On Windows:

set APP_MASTER_PASSWORD=foo

On Unix like systems:

export APP_MASTER_PASSWORD=foo

Answer 2

You should use System property instead of environment variable for this case. Edit your tomcat scripts for JAVA_OPTS and add property like:

-DAPP_MASTER_PASSWORD=foo

and in your code, write

System.getProperty("APP_MASTER_PASSWORD");

You can do this in Eclipse as well, instead of JAVA_OPTS, copy the line in VM parameters inside run configurations.