Another thing to do especially since some devs keep steering people to
use commons-exec and then other devs say not to use it is to use the
command line execution functionality in plexus-utils.
1. Add the following dependency to your pom:
<dependency>
<groupId>plexus</groupId>
<artifactId>plexus-utils</artifactId>
<version>1.0.3</version>
</dependency>
2. Createa utility method like the following:
/**
* @see org.apache.maven.plugin.Mojo#execute()
*/
public static int execute(Commandline cl, Log log) throws
MojoExecutionException
{
try
{
if (log.isDebugEnabled())
{
log.debug("Command Line: " + cl);
}
StreamConsumer consumer = new MavenLogConsumer(log);
int exitCode = CommandLineUtils.executeCommandLine( cl,
consumer,
consumer );
return exitCode;
}
catch (CommandLineException e)
{
throw new MojoExecutionException("command line error",
e);
}
}
3. Create a StreamConsumer that will funnel output to your current
maven process:
public class MavenLogConsumer implements StreamConsumer
{
private Log log;
/**
* @param log
*/
public MavenLogConsumer(Log log)
{
this.log = log;
}
/**
* @see
org.codehaus.plexus.util.cli.StreamConsumer#consumeLine(java.lang.String)
*/
public void consumeLine(String line)
{
log.info(line);
}
}
You should now be good to execute the jar command directly.
Wb
On 10/4/05, Orjan Austvold <[EMAIL PROTECTED]> wrote:
> Hi,
>
> The jar tool is located in the tools.jar archive. Try something like
>
> sun.tools.jar.Main jarTool = new sun.tools.jar.Main(System.out,
> System.err, "jar");
> jarTool.run(new String[]{"cfm", "new-archive.jar", "myManifest.mf"});
>
>
> Ørjan
>
>
> Ashley Williams wrote:
> > Just to give a little more context I'm writing a plugin that simply
> > invokes "java -jar jaxb-xjc.jar <myschema>", hopefully specifying which
> > java vm to use, eg Java 5 or Java 4. Just a simple one liner plugin
> > really.
> >
> > On 3 Oct 2005, at 23:26, Ashley Williams wrote:
> >
> >> I'm writing a plugin that needs to call java -jar in the execute
> >> method. Is there an api I should use as I don't wish to use the java
> >> Runtime class to do this. I've had a look at the compiler plugin
> >> thinking that it might give me a clue (maybe by invoking javac), but
> >> it just delegates to some CompilerManager class.
> >>
> >> Thanks
> >> AW
> >>
> >> ---------------------------------------------------------------------
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> >>
> >>
> >
> >
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> >
>
> --
> Ørjan Austvold - Senior Software Architect
> www.colibria.com - putting the presence into messaging
>
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