压缩解压缩文件夹文件——解决了中文乱码问题

 

package com.scout.util;import java.io.BufferedInputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.util.Enumeration;import org.apache.tools.zip.ZipEntry;import org.apache.tools.zip.ZipFile;import org.apache.tools.zip.ZipOutputStream;public class ZipUtil {/*** 功能：压缩成zip* @author 吴晓聪 添加于 2008-5-19* @param zipFilep 压缩后的zip文件名* @param path 压缩路径* @throws java.lang.Exception*/public static void zip(String zipFilep, String path) throws Exception { System.out.println("压缩文件开始....................."); File zipFile = new File(zipFilep); if (!zipFile.exists()) { zipFile.createNewFile(); } ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile)); write(out, path, ""); out.close(); System.out.println("压缩文件结束！");}/*** 功能：写压缩流* @author 吴晓聪 添加于 2008-5-19* @param out 压缩输出流* @param path 压缩路径* @param base 压缩式的基础目录* @throws java.lang.Exception*/private static void write(ZipOutputStream out, String path, String base) throws Exception { File file = new File(path); if (file.isDirectory()) {//文件夹，递归 base = base.length() == 0 ? "" : base + File.separator; File[] tempFiles = file.listFiles(); for (int i = 0; i < tempFiles.length; i++) { write(out, tempFiles[i].getPath(), base+tempFiles[i].getName()); } } else {//文件，压缩 byte[] buff = new byte[2048]; int bytesRead = -1; ZipEntry entry = new ZipEntry(base); out.putNextEntry(entry); InputStream in = new BufferedInputStream(new FileInputStream(file)); while (-1 != (bytesRead = in.read(buff, 0, buff.length))) { out.write(buff, 0, bytesRead); } in.close(); out.flush(); }} /** * 功能：解压缩 * @author 吴晓聪 添加于 2008-5-19 * @param zipFilename zip文件 * @param destPath 解压缩路径 * @throws java.lang.Exception */public static void unZip(String zipFilename, String destPath) throws Exception { System.out.println("解压文件开始....................."); ZipFile zip = new ZipFile(zipFilename, "GB2312"); Enumeration enu = zip.getEntries();//得到压缩文件夹中的所有文件 while (enu.hasMoreElements()) { ZipEntry entry = (ZipEntry) enu.nextElement(); String file = destPath + entry.getName(); write(zip, entry, file); } System.out.println("解压文件结束！");}/*** 功能：将解压缩之后的文件写入目录* @author 吴晓聪 添加于 2008-5-19* @param zip 压缩文件* @param entry 压缩文件实体——压缩文件中的文件* @param fileLocation 解压缩之后的文件路径* @throws Exception*/private static void write(ZipFile zip, ZipEntry entry, String file) throws Exception { if (entry.isDirectory()) { File f = new File(file); f.mkdirs(); } else { File f = new File(file); createDir(f); FileOutputStream fos = new FileOutputStream(f); byte[] buffer = new byte[8196]; InputStream is = zip.getInputStream(entry); for (int len = is.read(buffer, 0, buffer.length); len != -1; len = is.read(buffer, 0, 8196)) { fos.write(buffer, 0, len); } fos.close(); }}/*** 功能：创建目录* @author 吴晓聪 添加于 2008-5-19* @param file 文件或目录*/private static void createDir(File file){ if(file.isDirectory() && !file.exists()){ file.mkdirs(); }else{ String path = file.getPath(); int i = path.lastIndexOf(File.separator); path = path.substring(0,i); new File(path).mkdirs(); }}/*** 功能：测试样例* @author 吴晓聪 添加于 2008-5-19* @param args*/public static void main(String[] args) { try { zip("f://cong.zip", "F://资料"); unZip("f://cong.zip", "f://cong//"); } catch (Exception e) { e.printStackTrace(); }}}

此源文件直接可以使用，关键点如下：
1 要解决中文乱码问题，需用ant下的tool工具包，只要将ant.jar放到类路径下即可。
2 解压缩时，得到的压缩实体为文件，创建文件时，需要先创建文件夹。

ant.jar包下载地址：

http://jar.cn13e.com/details.action?id=43&keywords=ant