java 压缩文件

java压缩文件及文件夹中的所有文件（一）资料收藏 2008-05-28 23:23:12 阅读261 评论0 字号：大中小
import java.io.File;
import org.apache.tools.zip.ZipOutputStream; //这个包在ant.jar里，要到官方网下载
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipEntry;
public class CompressBook {
public CompressBook() {}
/*
     * inputFileName 输入一个文件夹
     * zipFileName 输出一个压缩文件夹
    */
    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");//你要压缩的文件夹
         }catch (Exception ex) {
            ex.printStackTrace();
        }
     }
}
压缩文件代码：
import java.io.*;
import java.util.zip.*;//ZipOutputStream这个流在这里
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);//压缩包
        ZipEntry ze = new ZipEntry(f.getName());//这是压缩包名里的文件名
        zos.putNextEntry(ze);//写入新的 ZIP 文件条目并将流定位到条目数据的开始处

       while((len=bis.read(buf)) != -1)
       {
           zos.write(buf,0,len);
           zos.flush();
        }
        bis.close();
        zos.close();