Java—将文件夹压缩为zip文件

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;
/**
 * 
 * @author hwt
 *
 */
public class TestDir {
    /**
     * 将文件夹以及其下的文件压缩为文件
     * @param args
     * @throws IOException
     */
    public static void main(String[] args) throws IOException {
//源文件夹
        File file = new File("D:/ziptest");
　　　　 //目的文件
        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("D:/test.zip"));
        if (file.isDirectory()) {
            File[] files = file.listFiles();
            for (int i=0; i<files.length; i++) {
                BufferedInputStream bis = new BufferedInputStream(new FileInputStream(files[i]));
                zos.putNextEntry(new ZipEntry(file.getName() + File.separator + files[i].getName()));
                while (true) {
                    byte[] b = new byte[100];
                    int len = bis.read(b);
                    if (len == -1)
                        break;
                    zos.write(b, 0, len);
                }
                bis.close();
            }
        }
        zos.close();
    }
}