Guava 异常处理例子

 

Closer closer = Closer.create();
    try {
      InputStream in = closer.register(openInputStream());
      OutputStream out = closer.register(openOutputStream());
      // do stuff
    } catch (Throwable e) {
      // ensure that any checked exception types other than IOException that could be thrown are
      // provided here, e.g. throw closer.rethrow(e, CheckedException.class);
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }