java 递归 删除目录及子目录下所有文件

    /**
	 * 迭代删除文件夹
	 * @author hsj
	 * @param dirPath
	 */
	public static void deleteDir(String dirPath) {
		File file = new File(dirPath);
		if (file.isFile()) {
			file.delete();
		} else {
			File[] files = file.listFiles();
			if (files == null) {
				file.delete();
			} else {
				for (int i = 0; i < files.length; i++) {
					deleteDir(files[i].getAbsolutePath());
				}
				file.delete();
			}
		}
	}