JAVA:复制文件和文件夹

CopyUtils.java

package com.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;

/***
 * 
 * @ClassName CopyUtils
 * @Description TODO
 * @author liangjian
 * @date Apr 25, 2013 2:55:40 PM
 * 
 */
public class CopyUtils {
    /**
     * 复制单个文件
     * 
     * @param oldPath
     *            原文件路径
     * @param newPath
     *            复制后路径
     */
    public static boolean copyFile(String oldPath, String newPath) {
        boolean result = false;
        try {
            int bytesum = 0;
            int byteread = 0;
            File oldfile = new File(oldPath);
            String _newPath = newPath.substring(0, newPath.lastIndexOf("\\"));
            if (oldfile.exists()) { // 文件存在时
                InputStream inStream = new FileInputStream(oldPath); // 读入原文件
                File newFile = new File(_newPath);
                if(!newFile.exists()){
                    newFile.mkdirs();
                    System.out.println("create");
                }
                FileOutputStream fs = new FileOutputStream(newPath);
                byte[] buffer = new byte[1444];
                while ((byteread = inStream.read(buffer)) != -1) {
                    bytesum += byteread; // 字节数 文件大小
                    fs.write(buffer, 0, byteread);
                }
                inStream.close();
            }
            if(new File(newPath).exists()){
                result = true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * 复制文件夹
     * 
     * @param oldPath
     *            原文件路径
     * @param newPath
     *            复制后路径
     */
    public static boolean copyFolder(String oldPath, String newPath) {
        boolean result = false;
        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]);
                }
            }
            if(new File(newPath).exists()){
                result = true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
}