package com.test;import java.io.File;import java.io.BufferedOutputStream;import java.io.BufferedInputStream;import java.io.FileOutputStream;import java.io.FileInputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;import java.util.zip.ZipOutputStream;/** * 该类实现文件夹压缩成zip文件和zip文件解压 *  * @author Administrator *  */public class Zip {    private ZipInputStream zipIn; // 解压Zip    private ZipOutputStream zipOut; // 压缩Zip    private ZipEntry zipEntry;    private static int bufSize; // size of bytes    private byte[] buf;    private int readedBytes;    public Zip() {        this(512);    }    public Zip(int bufSize) {        this.bufSize = bufSize;        this.buf = new byte[this.bufSize];    }    // 压缩文件夹内的文件    public void doZip(String zipDirectory) {// zipDirectoryPath:需要压缩的文件夹名        File file;        File zipDir;        zipDir = new File(zipDirectory);        String zipFileName = zipDirectory + ".zip";// 压缩后生成的zip文件名        try {            this.zipOut = new ZipOutputStream(new BufferedOutputStream(                    new FileOutputStream(zipFileName)));            handleDir(zipDir, this.zipOut);            this.zipOut.close();        } catch (Exception ioe) {            ioe.printStackTrace();        }    }    // 由doZip调用,递归完成目录文件读取    private void handleDir(File dir, ZipOutputStream zipOut) throws Exception {        FileInputStream fileIn;        File[] files;        files = dir.listFiles();        if (files.length == 0) {// 如果目录为空,则单独创建之.            // ZipEntry的isDirectory()方法中,目录以"/"结尾.            this.zipOut.putNextEntry(new ZipEntry(dir.toString() + "/"));            this.zipOut.closeEntry();        } else {// 如果目录不为空,则分别处理目录和文件.            for (File fileName : files) {                if (fileName.isDirectory()) {                    handleDir(fileName, this.zipOut);                } else {                    fileIn = new FileInputStream(fileName);                    String name = dir.getName();                    // 生成的压缩包存放在原目录下                    this.zipOut.putNextEntry(new ZipEntry(name + "/"                            + fileName.getName().toString()));                    // 此方法存放在该项目目录下                    // this.zipOut.putNextEntry(new                    // ZipEntry(fileName.toString()));                    while ((this.readedBytes = fileIn.read(this.buf)) > 0) {                        this.zipOut.write(this.buf, 0, this.readedBytes);                    }                    this.zipOut.closeEntry();                }            }        }    }    // 解压指定zip文件    public void unZip(String unZipfileName) {// unZipfileName需要解压的zip文件名        FileOutputStream fileOut;        File file;        String f = unZipfileName.substring(0, unZipfileName.length() - 4);        File ff = new File(f);        try {            this.zipIn = new ZipInputStream(new BufferedInputStream(                    new FileInputStream(unZipfileName)));            while ((this.zipEntry = this.zipIn.getNextEntry()) != null) {                file = new File(this.zipEntry.getName());                if (this.zipEntry.isDirectory()) {                    file.mkdirs();                } else {                    // 如果指定文件的目录不存在,则创建之.                    File parent = file.getParentFile();                    if (!parent.exists()) {                        parent.mkdirs();                    }                    if (!ff.exists()) {                        ff.mkdir();                    }                    fileOut = new FileOutputStream(f + "/" + file.getName());                    // fileOut = new FileOutputStream(file); 此方法存放到该项目目录下                    while ((this.readedBytes = this.zipIn.read(this.buf)) > 0) {                        fileOut.write(this.buf, 0, this.readedBytes);                    }                    fileOut.close();                }                this.zipIn.closeEntry();            }        } catch (Exception ioe) {            ioe.printStackTrace();        }    }    // 设置缓冲区大小    public void setBufSize(int bufSize) {        this.bufSize = bufSize;    }    // 测试Zip类    public static void main(String[] args) throws Exception {        Zip zip = new Zip();        zip.doZip("e:\\test");//        zip.unZip("c:\\test.zip");    }}