压缩与解压缩类一

package com.huawei.support.utils;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

public class Zip
{
    /**
     * 将指定目录的内容压缩成zip文件
     * @param baseDir 需压缩的目录
     * @param zipfile 压缩后的zip文件名
     * @throws FileNotFoundException
     */
    public static void createZipFile(String baseDir, String zipfile)
            throws FileNotFoundException
    {
        if (StringUtil.isNullOrEmpty(baseDir)
                || StringUtil.isNullOrEmpty(zipfile))
        {
            return;
        }
        File curFile = new File(baseDir);
        if (null == curFile || 0 == curFile.listFiles().length)
        {
            return;
        }
       
        // 创建写入压缩文件输出流
        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipfile));
       
        writeZip(baseDir, baseDir, zos);
        try
        {
            zos.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }
   
    /**
     * 将指定的压缩文件解压到指定目录
     * @param zipfile 压缩文件
     * @param unZipDir 解压目录
     */
    public static void unZipFile(String zipfile, String unZipDir)
    {
        InputStream in = null;
        final File zipFile = new File(zipfile);
        if (!zipFile.exists())
        {
            System.out.println("该jar文件不存在：" + zipfile);
            return;
        }
        try
        {
            in = new FileInputStream(zipFile);
            ZipInputStream zipStream = new ZipInputStream(in);
            ZipEntry zipEntry = zipStream.getNextEntry();
            while (null != zipEntry)
            {
                zipEntry = createFileOrFolderByZipEntry(unZipDir,
                        zipEntry,
                        zipStream);
               
            }// while
        }
        catch (final FileNotFoundException e)
        {
            System.err.println(e);
        }
        catch (final IOException e)
        {
            System.err.println(e);
        }
        finally
        {
            try
            {
                in.close();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
    }