import java.io.File;
import java.io.IOException;

public class CreateKeep {

	public static final String packageFile = ".keep";

	public static void main(String[] args) {
		String path = getRealPath();
		File file = new File(path);
		try {
			traversalAllFolder(file);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 遍历当前文件夹下的所有文件夹，对空的文件夹创建.keep文件
	 * 
	 * @param dir
	 * @throws Exception
	 */
	final static void traversalAllFolder(File dir) throws Exception {
		File[] fs = dir.listFiles();
		int fsLength = fs.length;
		if (fsLength == 0) {
			createFile(dir.getAbsolutePath());
		} else {
			for (int i = 0; i < fsLength; i++) {
				if (fs[i].isDirectory()) {
					try {
						traversalAllFolder(fs[i]);
					} catch (Exception e) {
					}
				}
			}
		}
	}

	/**
	 * 创建.keep文件
	 * 
	 * @param folderPath
	 *            路径名
	 */
	public static void createFile(String folderPath) {
		String fileName = folderPath + "/" + packageFile;
		File file = new File(fileName);
		try {
			file.createNewFile();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 获取当前jar包所在路径
	 * 
	 * @return
	 */
	public static String getRealPath() {
		String realPath = CreateKeep.class.getClassLoader().getResource("")
				.getFile();
		java.io.File file = new java.io.File(realPath);
		realPath = file.getAbsolutePath();
		try {
			realPath = java.net.URLDecoder.decode(realPath, "utf-8");
		} catch (Exception e) {
			e.printStackTrace();
		}

		return realPath;
	}

}