code: public static void decompress(File file, boolean delete) throws Exception {
  		FileInputStream fis = new FileInputStream(file);
  		FileOutputStream fos = new FileOutputStream(file.getPath().replace(EXT, ""));
  		decompress(fis, fos);
  		fis.close();
  		fos.flush();
  		fos.close();
  		if (delete) {
  			file.delete();
  		}
  	}
docs: 文件解压缩
  @param file
  @param delete 是否删除原始文件
  @throws Exception