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();
}
}
}