How can I obtain the version number of a custom Eclipse feature at runtime?

问题

I would like to display the version number of a custom Eclipse feature I am developing in the title bar of its perspective. Is there a way to obtain the version number from the runtime plugin and/or workbench?

回答1:

Something like:

Platform.getBundle("my.feature.id").getHeaders().get("Bundle-Version");

should do the trick.

Note (from this thread) that it can not be used anywhere within the plugin itself:
this.getBundle() is not valid until AFTER super.start(BundleContext) has been called on your plugin.
So if you are using this.getBundle() within your constructor or within your start(BundleContext) before calling super.start() then it will return null.

If that fails, you have here a more complete "version":

public static String getPlatformVersion() {
  String version = null;

  try {
    Dictionary dictionary = 
      org.eclipse.ui.internal.WorkbenchPlugin.getDefault().getBundle().getHeaders();
    version = (String) dictionary.get("Bundle-Version"); //$NON-NLS-1$
  } catch (NoClassDefFoundError e) {
    version = getProductVersion();
  }

  return version;
}

public static String getProductVersion() {
  String version = null;

  try {
    // this approach fails in "Rational Application Developer 6.0.1"
    IProduct product = Platform.getProduct();
    String aboutText = product.getProperty("aboutText"); //$NON-NLS-1$

    String pattern = "Version: (.*)\n"; //$NON-NLS-1$
    Pattern p = Pattern.compile(pattern);
    Matcher m = p.matcher(aboutText);
    boolean found = m.find();

    if (found) {
      version = m.group(1);
    }
  } catch (Exception e) {

  }

  return version;
}

回答2:

I use the first option:

protected void fillStatusLine(IStatusLineManager statusLine) {
    statusItem = new StatusLineContributionItem("LastModificationDate"); //$NON-NLS-1$
    statusItem.setText("Ultima Actualizaci\u00f3n: "); //$NON-NLS-1$
    statusLine.add(statusItem);
    Dictionary<String, String> directory = Platform.getBundle("ar.com.cse.balanza.core").getHeaders();
    String version = directory.get("Bundle-Version");

    statusItem = new StatusLineContributionItem("CopyRight"); //$NON-NLS-1$
    statusItem.setText(Messages.AppActionBar_18);
    statusLine.add(statusItem);
}

回答3:

As @zvikico says above, the accepted answer does not work for Features, only Plug-ins (OSGi Bundles, which Features are not). The way to get info about installed features is via org.eclipse.core.runtime.Platform.getBundleGroupProviders() as described here.

回答4:

A version of what VonC provided to retrieve the primary Eclipse version number, but one that doesn't reference internal classes (which you should avoid doing):

Platform.getBundle(PlatformUI.PLUGIN_ID).getHeaders().get("Bundle-Version");

来源：https://stackoverflow.com/questions/817299/how-can-i-obtain-the-version-number-of-a-custom-eclipse-feature-at-runtime

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eclipse

eclipse-plugin

version

eclipse-pde