文件的拷贝和转移

package com.wepull.demo;



import java.io.*;

import java.util.zip.*;



/** *//**

* 对文件或者目录操作的类

* @version 1.0

* @author leno

*/

public class FileUtil {



   private static void copy(File source, File target) throws IOException {

      File tar = new File(target, source.getName());

      if (source.isDirectory()) {

        System.out.println("开始创建目录：" + tar.getPath());

        tar.mkdir();

        File[] fs = source.listFiles();

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

           copy(fs[i], tar);

        }

      } else {

        System.out.println("开始从" + source + "拷贝文件到" + tar.getPath());

        InputStream is = new FileInputStream(source);

        OutputStream os = new FileOutputStream(tar);

        byte[] buf = new byte[1024];

        int len = 0;

        while ((len = is.read(buf)) != -1) {

           os.write(buf, 0, len);

        }

        is.close();

        os.close();

      }

   }



   /** *//**

    * 拷贝文件或者目录到某个指定的路径

    *

    * @param source

    *            源文件或者目录

    * @param target

    *            目标路径

    * @throws IOException

    */

   public static void copy(String source, String target) {

      File sour = new File(source);

      File tar = new File(target);

      try {

        copy(sour, tar);

      } catch (IOException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

      }

   }



   private static void delete(File file) {

      if (file.isDirectory()) {

        File[] fs = file.listFiles();

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

           delete(fs[i]);

        }

        file.delete();

      } else {

        file.delete();

      }

   }



   /** *//**

    * 删除一个文件或者目录

    *

    * @param file

    */

   public static void delete(String path) {

      File file = new File(path);

      delete(file);

   }



   /** *//**

    * 压缩文件或者目录到指定的路径

    *

    * @param zipFileName

    *            目标路径

    * @param inputPath

    *            被压缩的文件或者目录

    */

   public static void zip(String zipFileName, String inputPath) {

      File inputFile = new File(inputPath);

      ZipOutputStream out;

      try {

        out = new ZipOutputStream(new FileOutputStream(zipFileName));

        zip(out, inputFile, inputFile.getName());

        System.out.println("压缩完成！");

        out.close();

      } catch (Exception e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

      }

   }



   private static void zip(ZipOutputStream out, File f, String base)

        throws Exception {

      System.out.println("正在压缩：" + f.getName() + " ");

      if (f.isDirectory()) {

        File[] fs = f.listFiles();

        base += "/";

        System.out.println("新建目录条目：" + f.getName());

        out.putNextEntry(new ZipEntry(base)); // 生成相应的目录

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

           // 对本目录下的所有文件对象递归调用本方法

           zip(out, fs[i], base + fs[i].getName());

        }

      } else {

        System.out.println("新增文件条目：" + f.getName());

        out.putNextEntry(new ZipEntry(base));

        InputStream is = new FileInputStream(f);

        byte[] buf = new byte[1024];

        int len = 0;

        while ((len = is.read(buf)) != -1) {

           out.write(buf, 0, len);

        }

        is.close();

      }

   }



   /** *//**

    * 解压缩zip文件到指定的路径

    *

    * @param zipfile

    *            zip格式压缩文件

    * @param desPath

    *            目标路径

    */

   public static void unzip(String zipFile, String desPath) {

      // 建立输出流，用于将从压缩文件中读出的文件流写入到磁盘

      OutputStream out = null;

      // 建立输入流，用于从压缩文件中读出文件

      ZipInputStream is;

      try {

        is = new ZipInputStream(new FileInputStream(zipFile));

        ZipEntry entry = null;

        while ((entry = is.getNextEntry()) != null) {

           System.out.println("正在解压缩：" + entry.getName() + " ");

           File f = new File(desPath + "\\" + entry.getName());

           if (entry.isDirectory()) {

              System.out.println("新建目录：" + f.getName());

              f.mkdir();

           } else {

              System.out.println("新增文件：" + f.getName());

              // 根据压缩文件中读出的文件名称新建文件

              out = new FileOutputStream(f);

              byte[] buf = new byte[1024];

              int len = 0;

              while ((len = is.read(buf)) != -1) {

                 out.write(buf, 0, len);

              }

              out.close();

           }

        }

        is.close();

      } catch (Exception e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

      }

   }



   /** *//**

    * 创建新文件

    *

    * @param path

    */

   public static void createFile(String path) {

      File file = new File(path);

      try {

        file.createNewFile();

      } catch (IOException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

      }



   }



   /** *//**

    * 创建新目录

    *

    * @param path

    */

   public static void createDir(String path) {

      File file = new File(path);

      file.mkdirs();

   }



   /** *//**

    * 剪切文件或者目录到某个指定的路径

    *

    * @param source

    *            源文件或者目录

    * @param target

    *            目标路径

    *

    */

   public static void cutTo(String source, String target) {

      File sourFile = new File(source);

      File tarFile = new File(target);

      if (sourFile.isFile()) {

        if (tarFile.isDirectory()) {

           sourFile.renameTo(tarFile);

        }

      } else {

        copy(source, target);

        delete(source);

      }

   }



   public static void main(String[] args) {

      // copy("E:\\w.txt", "E:\\a");

      // delete("E:\\a");

      // zip("E:\\a.zip", "E:\\b");

      // unzip("E:\\a.zip", "E:\\b");

      // createFile("E:\\a.txt");

      // createDir("E:\\bb");

      // cutTo("E:\\b", "D:\\");

   }

}