java:java中的原生ZipOutputStream…

package com.xudeyu.stream;

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.nio.charset.Charset;

import java.util.Scanner;

import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;

import java.util.zip.ZipOutputStream;

import javax.swing.JOptionPane;

public class ZipOutput

{

public static void main(String[] args) throwsIOException

{

ZipStream zip = new ZipStream();

// zip.zipFile("../data", "../data/zip.zip");

zip.zipDirectory("E:/CodeWriter/JavaCode/Data","D:\\zip.zip");

}

}

class ZipStream

{

public ZipStream()

{

}

public void zipFile(String originalZip, StringtargetZip)

throws IOException

{

// 创建一个File类,方便读取

File originalFile = new File(originalZip);

// 创建一个目标zip文件

ZipOutputStream zout = new ZipOutputStream(newFileOutputStream(

targetZip));

// 将原始文件的文件名作为一个条目

ZipEntry entry = new ZipEntry(originalFile.getName());

// 将一个条目添加到zip输出流

zout.putNextEntry(entry);

// 将原始文件写入zip流

BufferedInputStream in = new BufferedInputStream(newFileInputStream(

originalFile));

int length = 0;

while ((length = in.read()) != -1)

{

zout.write(length);

}

// 关闭流

in.close();

zout.closeEntry();

zout.finish();

zout.close();

JOptionPane.showMessageDialog(null,"文件压缩完成!");

}

public void zipDirectory(String originalDir, StringtargetZip)

throws IOException

{

// 创建一个文件输出流

ZipOutputStream zout = new ZipOutputStream(newFileOutputStream(

targetZip));

File orifile = new File(originalDir);

// 采用递归遍历,添加每一个文件

zipEveryFile(targetZip, zout, orifile);

// 关闭流

zout.finish();

zout.close();

}

private void zipEveryFile(String targetZip, ZipOutputStreamzout,

File orifile) throws IOException, FileNotFoundException

{

// 如果待压缩的文件是目录,则遍历

if (orifile.isDirectory())

{

File[] files = orifile.listFiles();

for (File afile : files)

{

// 压缩每一个出现的文件

zipEveryFile(targetZip, zout, newFile(afile.getPath()));

}

}

// 如果是文件,则添加该项

if (orifile.isFile())

{

//TODO;保存当前的目录名,再次遍历时把目录名加在ZipEntry的前面,这样就不用currenttime给添加标示了

ZipEntry entry = newZipEntry(System.currentTimeMillis()+orifile.getName());

// 读取该文件所有的流

BufferedInputStream out = new BufferedInputStream(

new FileInputStream(new File(orifile.getPath())));

// 添加一个条目

zout.putNextEntry(entry);

// 将文件信息添加入流

int length = 0;

while ((length = out.read()) != -1)

{

// 写入文件流

zout.write(length);

}

// 单个文件关闭

out.close();

zout.closeEntry();

}

}

}