一个压缩及解压缩的类

import java.util.zip.*;
import java.io.*;
class TestZip
{
public void zip(String zipFileName, String inputFile) throws Exception
{
zip(zipFileName, new File(inputFile));
}
public void zip(String zipFileName, File inputFile) throws Exception
{
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipFileName));
zip(out, inputFile, "");
System.out.println("zip done");
out.close();
}
public void unzip(String zipFileName, String outputDirectory)
throws Exception
{
ZipInputStream in = new ZipInputStream(new FileInputStream(zipFileName));
ZipEntry z;
while ((z = in.getNextEntry()) != null)
{
System.out.println("unziping " + z.getName());
if (z.isDirectory())
{
String name = z.getName();
name = name.substring(0, name.length() - 1);
File f = new File(outputDirectory + File.separator + name);
f.mkdir();
System.out.println("mkdir " + outputDirectory + File.separator
+ name);
}
else
{
File f = new File(outputDirectory + File.separator
+ z.getName());
f.createNewFile();
FileOutputStream out = new FileOutputStream(f);
int b;
while ((b = in.read()) != -1)
out.write(b);
out.close();
}
}
in.close();
}
public void zip(ZipOutputStream out, File f, String base) throws Exception
{
System.out.println("Zipping " + f.getName());
if (f.isDirectory())
{
File[] fl = f.listFiles();
out.putNextEntry(new ZipEntry(base + "/"));
base = base.length() == 0 ? "" : base + "/";
for (int i = 0; i < fl.length; i++)
{
zip(out, fl[i], base + fl[i].getName());
}
}
else
{
out.putNextEntry(new ZipEntry(base));
FileInputStream in = new FileInputStream(f);
int b;
while ((b = in.read()) != -1)
out.write(b);
in.close();
}
}
public static void main(String[] args)
{
try
{
TestZip t = new TestZip();
t.zip("c://test.zip", "c://test");
t.unzip("c://test.zip", "c://test2");
}
catch (Exception e)
{
e.printStackTrace(System.out);
}
}
}