轉自：http://www.aygfsteel.com/mrcmd/archive/2007/08/24/138963.html
用java壓縮文件夾/文件壓縮文件夾代碼：
import java.io.File;
import org.apache.tools.zip.ZipOutputStream; //這個包在ant.jar里，要到官方網下載
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipEntry;
public class CompressBook {
public CompressBook() {}
/*
* inputFileName 輸入一個文件夾
* zipFileName 輸出一個壓縮文件夾
*/
public void zip(String inputFileName) throws Exception {
String zipFileName = "c:\\test.zip"; //打包后文件名字
System.out.println(zipFileName);
zip(zipFileName, new File(inputFileName));
}
private 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();
}
private void zip(ZipOutputStream out, File f, String base) throws Exception {
if (f.isDirectory()) {
File[] fl = f.listFiles();
out.putNextEntry(new org.apache.tools.zip.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 org.apache.tools.zip.ZipEntry(base));
FileInputStream in = new FileInputStream(f);
int b;
System.out.println(base);
while ( (b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}
public static void main(String [] temp){
CompressBook book = new CompressBook();
try {
book.zip("c:\\c");//你要壓縮的文件夾
}catch (Exception ex) {
ex.printStackTrace();
}
}
}import java.io.*;
import java.util.zip.*;//ZipOutputStream這個流在這里
import java.util.*;
public class ZipOutputStreamTest
{
public static void main(String[] args) throws Exception
{
File f = new File("a.jpg");
FileInputStream fis = new FileInputStream(f);
BufferedInputStream bis = new BufferedInputStream(fis);
byte[] buf = new byte[1024];
int len;
FileOutputStream fos = new FileOutputStream(f.getName()+".zip");
BufferedOutputStream bos = new BufferedOutputStream(fos);
ZipOutputStream zos = new ZipOutputStream(bos);//壓縮包
ZipEntry ze = new ZipEntry(f.getName());//這是壓縮包名里的文件名
zos.putNextEntry(ze);//寫入新的 ZIP 文件條目并將流定位到條目數據的開始處
while((len=bis.read(buf))!=-1)
{
zos.write(buf,0,len);
zos.flush();
}
bis.close();
zos.close();
}
}