java遍历文件夹并复制文件到指定目录

转载：http://www.open-open.com/home/space-2869-do-blog-id-5781.html

package com.czp;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Scanner;

import javax.swing.JTextArea;

public class CopyFolder {

	//允许复制的文件类型
	public static String[] filterFile = {".java",".xml",".xdl",".properties",".sql",".jupiter",".wsdl"};
	private  long total = 0l;
	//private static Pattern pattern = Pattern.compile("[A-z][:]/[A-z]*/OMC[0-9A-z]{0,}");
	
	public static void main(String[] args) throws Exception {

		Scanner scanner = new Scanner(System.in);
		System.out.println("Enter src folder:");
		String srcStr = scanner.next();
		String destStr;
		System.out.println("Now enter dest folder:");
		destStr = scanner.next();
		String answer = null;
		do{
			File src = new File(srcStr);
			File des = new File(destStr);
			new CopyFolder().copyFolder(src, des,new String[]{".java",".xml",".xdl",".properties",".sql",".jupiter"},null);
			System.out.println("Continue ?y or n");
			answer = scanner.next();
		}while(answer.equalsIgnoreCase("Y"));
		scanner.close();
	}

	/**
	 * 
	 * @param folder
	 * @param filterFile 
	 * @param status 
	 * @throws Exception 
	 */
	public void copyFolder(File srcFolder,File destFolder,String[] filterFile, JTextArea status) throws Exception
	{
		File[] files = srcFolder.listFiles();
		for (File file : files)
		{
			if(file.isFile())
			{
				String pathname = destFolder+File.separator+file.getName();
				
				for (String suff : filterFile)
				{
				     if(pathname.endsWith(suff))
				     {
				    	 File dest = new File(pathname);
				    	 File destPar =  dest.getParentFile();
				    	 destPar.mkdirs();
				    	 if(!dest.exists())
				    	 {
				    		 dest.createNewFile();
				    	 }
				    	 copyFile(file, dest,status);
				     }
				}
			}else{
				 copyFolder(file, destFolder, filterFile,status);
			}
		}
	}
	/***
	 * copy file
	 * 
	 * @param src
	 * @param dest
	 * @param status 
	 * @throws IOException
	 */
	private void copyFile(File src, File dest, JTextArea status) throws Exception {
		BufferedInputStream reader = null;
		BufferedOutputStream writer = null;
		try {
			reader = new BufferedInputStream(new FileInputStream(src));
			writer = new BufferedOutputStream(new FileOutputStream(dest));
			byte[] buff = new byte[reader.available()];
			while ((reader.read(buff)) != -1) {
				writer.write(buff);
			}
			total++;
			String temp = "\ncopy:\n"+src+"\tsize:"+src.length()+"\nto:\n"+dest+"\tsize:"+dest.length()+"\n complate\n totoal:"+total;
			System.out.println(temp);
			//status.append(temp);
		} catch (Exception e) {
			throw e;
		} finally {
			writer.flush();
			writer.close();
			reader.close();
			
		}
	}
}