OSGI如何读取插件中的资源文件

思路就是通过bundleContext来取得资源。
首先，要在对应的插件中先建立一个Activator需要实现BundleActivator接口，
代码：

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;

public class Activator implements BundleActivator {

  private static BundleContext bundleContext;

  public static BundleContext getBundleContext() {
    return bundleContext;
  }

  public void start(BundleContext context) throws Exception {
  	 Activator.bundleContext = context;   
  }

	public void stop(BundleContext context) throws Exception {
		
	}
}

然后再需要查找资源的地方，取得bundleContext，通过bundleContext的getResource方法取得URL类型的resource，代码：

public static InputStream getResourceByContext(String path) {
		try {
			BundleContext bundleContext = Activator.getBundleContext();
			URL resource = bundleContext.getBundle().getResource("/web" + path);
			InputStream in = resource.openStream();
			if (in == null) {
				String msg = "\nNot found \"" + path + "\";";
				log.error(msg);
			}
			return in;
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
		}
		return null;
	}

注意这里的路径，是从直接写工程文件夹下开始写。