How can I run mvn exec:java from inside Java

Question

I would like to build a JUnit integration test that launches a Java process (Spring based) and then makes calls against that process.

If I would call this from the command line I would launch the Java process by calling mvn exec:java -DmainClass=myClass -Dblahblah from the command line in my pom directory

Is there any way to call that exec:main from inside my Java tester class, so that my tester can execute calls against process and validate results?

possible duplicate of [How to run maven from java?](http://stackoverflow.com/questions/5141788/how-to-run-maven-from-java) — FrobberOfBits, Apr 09 '14 at 17:45

FrobberOfBits · Answer 1 · 2014-04-09T17:43:38.003

2

Use the Maven invocation API

The code is going to be something similar to the following:

InvocationRequest request = new DefaultInvocationRequest();
request.setPomFile( new File( "/path/to/pom.xml" ) );
request.setGoals( Collections.singletonList( "install" ) );

Invoker invoker = new DefaultInvoker();
invoker.execute( request );

edited Apr 09 '14 at 17:43

answered Apr 09 '14 at 17:42

FrobberOfBits

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score 1 · Accepted Answer · edited Apr 10 '14 at 02:58

1

You can use maven-invoker

Here is the what you need

InvocationRequest request = new DefaultInvocationRequest();
request.setPomFile( new File( "/path/to/pom.xml" ) );
request.setGoals( Collections.singletonList( "exec:java -DmainClass=com.vgrazi.MyClass -Dparam1=value1" ) );

Invoker invoker = new DefaultInvoker();
invoker.execute( request );

edited Apr 10 '14 at 02:58

Victor Grazi

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answered Apr 09 '14 at 17:41

jmj

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Thanks. Is there any way to send in the -D parameters? – Victor Grazi Apr 09 '14 at 17:43
try with http://maven.apache.org/shared-archives/maven-invoker-2.1.1/apidocs/org/apache/maven/shared/invoker/DefaultInvocationRequest.html#addShellEnvironment%28java.lang.String,%20java.lang.String%29 – jmj Apr 09 '14 at 17:45
Actually I just added my -D parameters right at the end of the string, and it worked. In other words "exec:java -Dblahblah -Dblahmore". Thanks! – Victor Grazi Apr 09 '14 at 18:13

How can I run mvn exec:java from inside Java

2 Answers2