深度遍历目录

有一年多没有搞Java了,一直在搞数据库与JS,今天突然要写一个深度遍历目录,获取文件数及文件大小的程序,呵呵,花了一个多小时才搞出来了,感觉自己在Java这块生疏了很多,哎,什么都是这样,不用,一下子就会忘记好多的,为了今后便于再次利用,贴上源代码.

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.StringReader;

public class EachFolder {
	private String folder;
	private String outFileName;
	private StringBuffer sb;

	public EachFolder() {
		this.folder = "F:/Book/CSS";
		this.outFileName = "F:/test.txt";
		sb = new StringBuffer("");
	}

	public EachFolder(String folder, String outFileName) {
		this.folder = folder;
		this.outFileName = outFileName;
		sb = new StringBuffer("");
	}

	public void exec() {
		File ef = new File(this.folder);
		this.each(ef);
		this.writeFile();
	}

	private void each(File f) {
		String[] flist = f.list();
		for (String fn : flist) {
			File file = new File(f.getPath() + "/" + fn);
			if (file.isDirectory()) {
				this.each(file);
			} else if (file.isFile()) {
				try {
					int size = new FileInputStream(file).available();
					int kb = size / 1024 > 0 ? size / 1024 + 1 : 1;
					sb.append("文件名:" + file.getPath() + "***********文件大小:" + kb
							+ "kb\n");
				} catch (FileNotFoundException e) {
					e.printStackTrace();
					System.out.println("文件未找到");
				} catch (IOException e) {
					e.printStackTrace();
					System.out.println("IO流错误");
				}
			}
		}
	}

	private void writeFile() {
		try {
			BufferedReader br = new BufferedReader(new StringReader(
					sb.toString())); // 输入流
			BufferedWriter bw = new BufferedWriter(new FileWriter(outFileName)); // 输出流
			String line = null;
			while ((line = br.readLine()) != null) {
				bw.write(line + "\n");
			}
			bw.flush();
			bw.close();
			br.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		EachFolder ef = new EachFolder("F:/Book/JavaSE", "F:/test.txt");
		ef.exec();
	}
}