Java 实现zip加压解压

package com.common;

import java.io.*;
import java.util.*;
import java.util.zip.*;

public class ZipFiles_20091120
{
    static final int BUFFER = 2048; //压缩缓冲区大小
    public int files = 0;
    public String filename = "";

    /**
     * 对选定的当前目录下所有文件进行压缩
     * @param inputUrl 被压缩文件所在目录路径，路径要已"/"结束
     * @param outputUrl 压缩文件输出路径，包括zip文件名称
     */
    public void zip(String inputUrl, String outputUrl)
    {
        try
        {
            BufferedInputStream origin = null;
            FileOutputStream dest = new FileOutputStream(outputUrl);
            ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest));
            byte data[] = new byte[BUFFER];
            // 得到当前目录下文件列表
            File f = new File(inputUrl);
            File files[] = f.listFiles();
            //compressFiles(inputUrl, files, out, data);

            ///////////

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

				if (files[i].isFile()&&!files[i].getName().equals("temp.zip"))
				{
					System.out.println("NAME: "+files[i].getName());
					System.out.println("Adding: "+files[i]);
					FileInputStream fi = new FileInputStream(files[i]);
					origin = new BufferedInputStream(fi, BUFFER);
					ZipEntry entry = new ZipEntry(files[i].getName());
					out.putNextEntry(entry);
					int count;
					while((count = origin.read(data, 0, BUFFER)) != -1)
					{
						out.write(data, 0, count);
					}
					origin.close();
				}
			}

            ///////////

            out.close();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

    /**
     * 对选定的压缩文件进行解压缩。
     * @param inputUrl zip压缩文件路径，包括zip文件名称
     * @param outputUrl 解压缩文件输出目录路径
     */
    public void unZip(String inputUrl, String outputUrl)
    {
        try
        {
            BufferedOutputStream dest = null;
            BufferedInputStream is = null;
            ZipEntry entry;
            ZipFile zipfile = new ZipFile(inputUrl);
            Enumeration e = zipfile.entries();
            while (e.hasMoreElements())
            {
                entry = (ZipEntry) e.nextElement();
                is = new BufferedInputStream
                    (zipfile.getInputStream(entry));
                int count;
                byte data[] = new byte[BUFFER];
                FileOutputStream fos = new
                    FileOutputStream(outputUrl + entry.getName());
                dest = new BufferedOutputStream(fos, BUFFER);
                while ( (count = is.read(data, 0, BUFFER)) != -1)
                {
                    dest.write(data, 0, count);
                }

                this.files++;
                dest.flush();
                dest.close();
                is.close();
            }
            zipfile.close();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

    /**
     * 遍历要压缩的目录及所有子目录
     * @param inputUrl
     * @param files
     * @param out
     * @param data
     */
    public void compressFiles(String inputUrl, File[] files,
                              ZipOutputStream out,
                              byte data[])
    {
        try
        {
            for (int i = 0; i < files.length; i++)
            {
                if (files[i].isDirectory())
                {
                    String dirPath = inputUrl + files[i].getName() + "/";
                    File df = new File(dirPath);
                    File dirFiles[] = df.listFiles();
                    compressFiles(dirPath, dirFiles, out, data);
                }
                else
                {
                    doZip(inputUrl, files[i], out, data);
                }
            }
        }
        catch (Exception e)
        {
            System.out.println(e);
        }
    }

    /**
     * 打包压缩文件
     * @param inputUrl
     * @param files
     * @param out
     * @param data
     */
    public void doZip(String inputUrl, File files, ZipOutputStream out,
                      byte data[])
    {
        try
        {
            FileInputStream fi = new FileInputStream(inputUrl + files.getName());
            BufferedInputStream origin = new BufferedInputStream(fi, BUFFER);
            ZipEntry entry = new ZipEntry(files.getName());
            out.putNextEntry(entry);
            int count;
            while ( (count = origin.read(data, 0, BUFFER)) != -1)
            {
                out.write(data, 0, count);
            }
            fi.close();
            origin.close();
        }
        catch (IOException e)
        {
            System.out.println(e);
        }
    }

    public int getFiles()
    {
        return this.files;
    }

    static public void main(String args[])
    {
        try
        {
              ZipFiles_20091120 zf = new ZipFiles_20091120();
//            zf.zip("g:/test/", "g:\\test\\temp.zip");
            /*
			String tempFile="g:\\test\\temp.zip";
			File file = new File(tempFile);
			System.out.println((int) file.length());

			byte[] buffer = new byte[ (int) file.length()];

			BufferedInputStream input = new BufferedInputStream(new FileInputStream(tempFile));
			input.read(buffer, 0, buffer.length);
			input.close();
			long b = System.currentTimeMillis();
			System.out.println(buffer);

			com.sti.datacenter.server.DataControlService ds = new com.sti.datacenter.server.DataControlService();
			ds.sendClientData(buffer);
			*/
			zf.unZip("D:/temp/zipmobile.zip","D:/temp/");
            System.out.println("OOOOOOOOOKKKKKKKKKK");
        }
        catch (Exception e)
        {

        }
    }

}