MavenActionUtil.getMavenProject(e.getDataContext()) is Null when developing a intellij plugin

Question

I want to develop a idea intellij plugin just like "Maven Helper". I have to get the "MavenProject" object before I can do some biz logic. But I found the MavenProjectsManager is null (I use it in a maven project.)? Could someone give me some dev guide about this ? Thanks!

  public void actionPerformed(AnActionEvent e) {
    Project project = e.getData(PlatformDataKeys.PROJECT);
    VirtualFile file = e.getData(PlatformDataKeys.VIRTUAL_FILE);

    if (file == null || project == null) {
        return;
    }
    String fileName = file.getName();

    if (!fileName.endsWith(POM_XML)) {
        return;
    }

    final MavenProjectsManager projectsManager = MavenProjectsManager.getInstance(project);
 }

Answer 1

Please make sure that you've added the jars of the Maven plugin to the classpath of your IntelliJ IDEA SDK and not as a separate library. Doing the latter will cause two copies of the Maven plugin classes to be loaded, which will lead to the problem that you're describing.