Is it possible to get Maven dependencies in a property at run-time?

问题

I'm working with a situation where we are using the LATEST and RELEASE keywords in our POM for a certain dependency (both the dependency and the project are owned by us, so we control what is LATEST and RELEASE...and we only support one version at a time). Using these keywords allows us to minimize maintenance needed after a release.

There is a step in the build process that must copy DLLs from the unpacked dependency, but since we don't specify a specific version we have the version number of the unpacked dependency hard-coded and have to update it after every release. Is there a way get the version of this dependency at run-time from a Maven property?

The properties goal of the maven-dependency-plugin (http://maven.apache.org/plugins/maven-dependency-plugin/index.html) gets the location of the artifact in the local repository (which is not what I'm looking for). The depends-maven-plugin (shown here: http://team.ops4j.org/wiki/display/paxexam/Pax+Exam+-+Tutorial+1) can generate a file that contains the various dependencies and their versions, but using that would require having a process read the file and utilize that information. I'm wondering if there is a more "Maven way", such as accessing a property for the dependency version.

EDIT: For clarification, we need the version number so we can get to the directory of the unpacked dependency to copy files.

回答1:

I'm not sure what you mean with 'maven way' but I did something like this after looking at the same plugins you already mention:

  <build>
<plugins>
  <plugin>
    <groupId>org.codehaus.gmaven</groupId>
    <artifactId>gmaven-plugin</artifactId>
    <version>1.5</version>
    <executions>
      <execution>
        <phase>initialize</phase>
        <goals>
          <goal>execute</goal>
        </goals>
        <configuration>
          <source>                                                                                                                                                                                                                                                   
            project.properties.put('firstdependencyinthepom', project.dependencies[0]['version'])                                                                                                                                                                              
            project.properties.put('seconddependencyinthepom', project.dependencies[1]['version'])                                                                                                                                                                            
          </source>
        </configuration>
      </execution>
    </executions>
  </plugin>

and then I was able to refer to versions of these dependencies with ${firstdependencyinthepom} and ${seconddependencyinthepom} respectively.

来源：https://stackoverflow.com/questions/11885372/is-it-possible-to-get-maven-dependencies-in-a-property-at-run-time