code: public static InputStream getStreamSafe(String resurce) {
  		try {
  			return getResourceObj(resurce).getStream();
  		} catch (NoResourceException e) {
  			// ignore
  		}
  		return null;
  	}
docs: 从ClassPath资源中获取{@link InputStream}，当资源不存在时返回null
  
  @param resurce ClassPath资源
  @return {@link InputStream}
  @since 4.0.3