Java實現Copy

假定源文件夾爲D:/網絡管理,目標文件夾爲D:/網絡管理2,將目錄及子目錄下的文件做拷貝

package test;

import java.io.*;

/**
* Title: 
*
* Description: 
*
* Copyright: Copyright (c) 2006
*
* Company: 
*
* @author not attributable
* @version 1.0
*/
public class Copys {

    public static void main(String args[]) {
        File file = new File("D://網絡管理");
        File tofile = new File("D://網絡管理2");
        tofile.mkdirs();//建立目標文件夾

//指定源文件夾和目標文件夾參數，調用toCopyf方法
 toCopyf(file, tofile);
 }
 /**
 * 持貝指定的目錄下所有文件及子目錄到目標文件夾
 * */
 public static void toCopyf(File file, File tofile) {

 //獲取源目錄下一級所有目錄文件
 File[] files = file.listFiles();
 //逐個判斷，創建目錄，執行遞歸調用
 for (int i = 0; i < files.length; i++) {
 if (files[i].isDirectory()) {
 File copyPath = new File(tofile.getAbsolutePath() + "//" +
 files[i].getName());
 copyPath.mkdir();
 toCopyf(files[i],copyPath);
 } else { //如果file爲文件，讀取字節流寫入目標文件;
 try {
 FileInputStream fiStream = new FileInputStream(files[i]);
 BufferedInputStream biStream = new BufferedInputStream(
 fiStream);
 File copyFile = new File(tofile.getAbsolutePath()
 + "//" + files[i].getName());
 copyFile.createNewFile();
 FileOutputStream foStream = new FileOutputStream(copyFile);
 BufferedOutputStream boStream = new BufferedOutputStream(
 foStream);

                    int j;
                    while ((j = biStream.read()) != -1) {
                        boStream.write(j);
                    }

                    /*關閉流*/
                    biStream.close();
                    boStream.close();
                    fiStream.close();
                    foStream.close();
                } catch (FileNotFoundException ex) {
                    ex.printStackTrace();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
        }

}
}