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package ${basePackage}.frame.utils;
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import java.io.*;
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import java.util.Enumeration;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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import java.util.zip.ZipOutputStream;
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/**
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* ZipUtil - Zip解压打包工具
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*
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* @author wangbing
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* @version 0.0.1
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* @since 2017-01-01
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*/
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public class ZipUtil {
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/**
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* 解压文件
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*
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* @param zipFile 指定解压Zip文件
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* @param descDir 指定解压目录
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*/
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public static void unZip(File zipFile, File descDir) {
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if (!descDir.exists()) {
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descDir.mkdirs();
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}
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ZipFile zip = null;
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try {
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zip = new ZipFile(zipFile);
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Enumeration<?> entries = zip.entries();
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while (entries.hasMoreElements()) {
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ZipEntry entry = (ZipEntry) entries.nextElement();
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// 如果是文件夹,就创建个文件夹
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if (entry.isDirectory()) {
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File dir = new File(descDir, entry.getName());
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dir.mkdirs();
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} else {
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// 如果是文件,就先创建一个文件,然后用io流把内容copy过去
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File targetFile = new File(descDir + "/" + entry.getName());
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// 保证这个文件的父文件夹必须要存在
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if (!targetFile.getParentFile().exists()) {
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targetFile.getParentFile().mkdirs();
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}
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targetFile.createNewFile();
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// 将压缩文件内容写入到这个文件中
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InputStream is = zip.getInputStream(entry);
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FileOutputStream fos = new FileOutputStream(targetFile);
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int len;
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byte[] buf = new byte[1024];
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while ((len = is.read(buf)) != -1) {
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fos.write(buf, 0, len);
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}
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// 关流顺序,先打开的后关闭
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fos.close();
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is.close();
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}
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}
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System.out.println("解压文件" + zipFile.getAbsolutePath() + "成功");
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} catch (Exception e) {
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throw new RuntimeException("unzip error from ZipUtil", e);
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} finally {
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if (zip != null) {
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try {
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zip.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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/**
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* 压缩文件或文件夹
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*
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* @param src 指定待压缩目录或文件
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* @param zip 指定压缩Zip文件
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*/
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public static void toZip(File src, File zip) {
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ZipOutputStream zipOutputStream = null;
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try {
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if (!src.exists()) {
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System.err.println("压缩文件或目录不存在");
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return;
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}
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if (!zip.exists()) {
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zip.createNewFile();
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}
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zipOutputStream = new ZipOutputStream(new FileOutputStream(zip));
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compress(src, zipOutputStream, null);
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zipOutputStream.close();
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System.out.println("压缩文件" + zip.getAbsolutePath() + "成功");
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} catch (IOException e) {
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System.err.println("压缩失败");
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e.printStackTrace();
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} finally {
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if (zipOutputStream != null) {
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try {
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zipOutputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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/**
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* @param sourceFile 待压缩文件或文件夹
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* @param zos Zip输出流
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* @param parentPath 父目录结构
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* @throws IOException
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*/
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private static void compress(File sourceFile, ZipOutputStream zos, String parentPath) throws IOException {
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byte[] buff = new byte[1024];
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if (sourceFile.isDirectory()) {
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//确保空文件夹也可以压缩进去
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zos.putNextEntry(new ZipEntry((parentPath != null ? parentPath : "") + sourceFile.getName() + "/"));
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zos.closeEntry();
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//循环压缩子文件或文件夹
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for (File file : sourceFile.listFiles()) {
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compress(file, zos, (parentPath != null ? parentPath : "") + sourceFile.getName() + "/");
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}
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} else {
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//压缩文件
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zos.putNextEntry(new ZipEntry((parentPath != null ? parentPath : "") + sourceFile.getName()));
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int len;
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FileInputStream in = new FileInputStream(sourceFile);
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while ((len = in.read(buff)) != -1) {
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zos.write(buff, 0, len);
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}
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zos.closeEntry();
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in.close();
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}
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}
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public static void main(String[] args) {
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//解压
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unZip(new File("E:\\AAA.zip"), new File("E:\\AAA"));
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//压缩
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toZip(new File("E:\\AAA"), new File("E:\\AAA.zip"));
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}
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}
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