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Java 复制文件夹


 

  package com.Test;

  import java.io.File;

  import java.io.FileInputStream;

  import java.io.FileOutputStream;

  import java.io.InputStream;

  public class BackUp {

  /**

  * 复制单个文件

  *

  * @param oldPath

  * String 原文件路径 如:c:/fqf.txt

  * @param newPath

  * String 复制后路径 如:f:/fqf.txt

  * @return boolean

  */

  public void copyFile(String oldPath, String newPath) {

  try {

  int bytesum = 0;

  int byteread = 0;

  File oldfile = new File(oldPath);

  if (oldfile.exists()) { // 文件存在时

  InputStream inStream = new FileInputStream(oldPath); // 读入原文件

  FileOutputStream fs = new FileOutputStream(newPath);

  byte[] buffer = new byte[1444];

  int length;

  while ((byteread = inStream.read(buffer)) != -1) {

  bytesum += byteread; // 字节数 文件大小

  System.out.println(bytesum);

  fs.write(buffer, 0, byteread);

  }

  inStream.close();

  }

  } catch (Exception e) {

  System.out.println("复制单个文件操作出错");

  e.printStackTrace();

  }

  }

  /**

  * 复制整个文件夹内容

  *

  * @param oldPath

  * String 原文件路径 如:c:/fqf

  * @param newPath

  * String 复制后路径 如:f:/fqf/ff

  * @return boolean

  */

  public void copyFolder(String oldPath, String newPath) {

  try {

  (new File(newPath)).mkdirs(); // 如果文件夹不存在 则建立新文件夹

  File a = new File(oldPath);

  String[] file = a.list();

  File temp = null;

  for (int i = 0; i < file.length; i++) {

  if (oldPath.endsWith(File.separator)) {

  temp = new File(oldPath + file[i]);

  } else {

  temp = new File(oldPath + File.separator + file[i]);

  }

  if (temp.isFile()) {

  FileInputStream input = new FileInputStream(temp);

  FileOutputStream output = new FileOutputStream(newPath

  + "/" + (temp.getName()).toString());

  byte[] b = new byte[1024 * 5];

  int len;

  while ((len = input.read(b)) != -1) {

  output.write(b, 0, len);

  }

  output.flush();

  output.close();

  input.close();

  }

  if (temp.isDirectory()) {// 如果是子文件夹

  copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);

  }

  }

  } catch (Exception e) {

  System.out.println("复制整个文件夹内容操作出错");

  e.printStackTrace();

  }

  }

  public static void main(String args[]) {

  BackUp bp = new BackUp();

  bp.copyFolder("D:\Test", "E:\b");

  }

  }