Path of Weblogic domain directory in a Java app

Question

Is there an easy way of reading the directory path of the Weblogic domain the Java application is running in?

I can easily access the name of the server with System.getProperty("weblogic.Name") but I don't know what is the variable that holds the path of the Weblogic domain folder if there is one at all.

I know I could set up a variable like this but I was wondering if there is one already in Weblogic.

Many thanks

Solution 1

System.getProperty("weblogic.Name") will return the WebLogic server's name as it is passed via a JVM argument during startup of the server, from the script startWebLogic.sh or startWebLogic.cmd:

%JAVA_HOME%\bin\java %JAVA_VM% %MEM_ARGS% -Dweblogic.Name=%SERVER_NAME% ...

You can add another JVM argument to pass the WebLogic domain, that is available as the environment variable DOMAIN_HOME:

%JAVA_HOME%\bin\java %JAVA_VM% %MEM_ARGS% -Dweblogic.Name=%SERVER_NAME% -Dweblogic.domainDir=%DOMAIN_HOME%...

which you can then read using

System.getProperty("weblogic.domainDir");

You can also read the environment variable DOMAIN_HOME directly using System.getenv(String):

String domainDir = System.getenv("DOMAIN_HOME");

Solution 2

You can use the JMX service to get hold of the domain home directory from the 'RuntimeService > DomainConfiguration > RootDirectory'. You can use the following code to get hold of the domain directory from within an app.

InitialContext ctx = new InitialContext();
MBeanServer server = (MBeanServer)ctx.lookup("java:comp/env/jmx/runtime"); 
ObjectName service = new ObjectName("com.bea:Name=RuntimeService,Type=weblogic.management.mbeanservers.runtime.RuntimeServiceMBean");
ObjectName domain = (ObjectName)server.getAttribute(service, "DomainConfiguration");
System.out.println(server.getAttribute(domain, "RootDirectory"));

For more information you can refer to http://download.oracle.com/docs/cd/E17904_01/web.1111/e13728/accesswls.htm#JMXCU144