Maven exec plugin question - maven-2

Question

I'm using Maven 3.0.3 on Mac 10.6.6. After packaging my war, I want to execute an unzip command (I want to do this because I'm using a Grails plugin that deletes the exploded war directory). So I have this in my pom.xml …
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.1.1</version>
<configuration>
<executable>unzip</executable>
<arguments>
<argument>-d target/jx-1.0-SNAPSHOT target/jx-1.0-SNAPSHOT.war</argument>
</arguments>
</configuration>
<executions>
<execution>
<phase>verify</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
</plugin>
However, when I execute the command that invokes the plugin, I get the error …
[INFO] --- exec-maven-plugin:1.1.1:exec (default-cli) # jx ---
[INFO] UnZip 5.52 of 28 February 2005, by Info-ZIP. Maintained by C. Spieler. Send
[INFO] bug reports using http://www.info-zip.org/zip-bug.html; see README for details.
[INFO]
[INFO] Usage: unzip [-Z] [-opts[modifiers]] file[.zip] [list] [-x xlist] [-d exdir]
[INFO] Default action is to extract files in list, except those in xlist, to exdir;
[INFO] file[.zip] may be a wildcard. -Z => ZipInfo mode ("unzip -Z" for usage).
[INFO]
[INFO] -p extract files to pipe, no messages -l list files (short format)
[INFO] -f freshen existing files, create none -t test compressed archive data
[INFO] -u update files, create if necessary -z display archive comment
[INFO] -x exclude files that follow (in xlist) -d extract files into exdir
[INFO]
[INFO] modifiers: -q quiet mode (-qq => quieter)
[INFO] -n never overwrite existing files -a auto-convert any text files
[INFO] -o overwrite files WITHOUT prompting -aa treat ALL files as text
[INFO] -j junk paths (do not make directories) -v be verbose/print version info
[INFO] -C match filenames case-insensitively -L make (some) names lowercase
[INFO] -X restore UID/GID info -V retain VMS version numbers
[INFO] -K keep setuid/setgid/tacky permissions -M pipe through "more" pager
[INFO] Examples (see unzip.txt for more info):
[INFO] unzip data1 -x joe => extract all files except joe from zipfile data1.zip
[INFO] unzip -p foo | more => send contents of foo.zip via pipe into program more
[INFO] unzip -fo foo ReadMe => quietly replace existing ReadMe if archive file newer
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
Any ideas what I'm doing wrong? Thanks, - Dave

Answer 1

You're packing multiple arguments into one <argument>. That element takes exactly one argument, like "-d" or "target/jx-1.0-SNAPSHOT" from your example. You either have to break them up, or you can try using <commandlineArgs> instead.

Answer 2

As Ryan writes, you'll want this:
<argument>-d</argument>
<argument>target/jx-1.0-SNAPSHOT</argument>
<argument>target/jx-1.0-SNAPSHOT.war</argument>
But also, you are hard-coding lots of stuff that should be implemented using maven variables. So here's a better version:
<argument>-d</argument>
<argument>${project.build.directory}/${project.build.finalName}</argument>
<argument>${project.build.directory}/${project.build.finalName}.${project.packaging}</argument>