import java.io.*;

import java.util.*;

import java.util.zip.ZipOutputStream;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;

public class FileMgr {

  public FileMgr() {

  }

  /**

   * 压缩文件

   * @param srcfile File[]  需要压缩的文件列表

   * @param zipfile File    压缩后的文件

   */

  public static void ZipFiles(java.io.File[] srcfile, java.io.File zipfile) {

    byte[] buf = new byte[1024];

    try {

      // Create the ZIP file

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

      // Compress the files

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

        FileInputStream in = new FileInputStream(srcfile[i]);

        // Add ZIP entry to output stream.

        out.putNextEntry(new ZipEntry(srcfile[i].getName()));

        // Transfer bytes from the file to the ZIP file

        int len;

        while ( (len = in.read(buf)) > 0) {

          out.write(buf, 0, len);

        }

        // Complete the entry

        out.closeEntry();

        in.close();

      }

      // Complete the ZIP file

      out.close();

      System.out.println("压缩完成.");

    }

    catch (IOException e) {

      e.printStackTrace();

    }

  }

  /**

   * 解压缩

   * @param zipfile File 需要解压缩的文件

   * @param descDir String  解压后的目标目录

   */

  public static void UnZipFiles(java.io.File zipfile, String descDir) {

    try {

      // Open the ZIP file

      ZipFile zf = new ZipFile(zipfile);

      for (Enumeration entries = zf.entries(); entries.hasMoreElements(); ) {

        // Get the entry name

        ZipEntry entry = ( (ZipEntry) entries.nextElement());

        String zipEntryName = entry.getName();

        InputStream in = zf.getInputStream(entry);

        // System.out.println(zipEntryName);

        OutputStream out = new FileOutputStream(descDir + zipEntryName);

        byte[] buf1 = new byte[1024];

        int len;

        while ( (len = in.read(buf1)) > 0) {

          out.write(buf1, 0, len);

        }

        // Close the file and stream

        in.close();

        out.close();

        System.out.println("解压缩完成.");

      }

    }

    catch (IOException e) {

      e.printStackTrace();

    }

  }

}