package com.ricoh.rapp.ezcx.admintoolweb.util;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.io.OutputStream;import java.nio.charset.Charset;import java.util.ArrayList;import java.util.Enumeration;import java.util.List;import java.util.zip.ZipEntry;import java.util.zip.ZipFile;import java.util.zip.ZipOutputStream;public class ZipUtil { private static final int BUFFER_SIZE = 2 * 1024; /** * @param srcDir * 需要压缩的文件夹 * @param zipPath * 压缩文件目录 * @param zipFileName * 压缩文件的名称 * @throws RuntimeException * @throws FileNotFoundException */ public static void toZip(String srcDir, String zipPath, String zipFileName) throws RuntimeException, FileNotFoundException { long start = System.currentTimeMillis(); File zipDir = new File(zipPath); if (!zipDir.exists() || !zipDir.isDirectory()) { zipDir.mkdirs(); } File zipFile = new File(zipPath, zipFileName); FileOutputStream out = new FileOutputStream(zipFile); ZipOutputStream zos = null; try { zos = new ZipOutputStream(out); File sourceFile = new File(srcDir); compress(sourceFile, zos, sourceFile.getName(), false); long end = System.currentTimeMillis(); System.out.println("压缩完成，耗时：" + (end - start) + " ms"); } catch (Exception e) { throw new RuntimeException("zip error from ZipUtils", e); } finally { if (zos != null) { try { zos.close(); } catch (IOException e) { e.printStackTrace(); } } if (out != null) { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * @param sourceFile * 需要压缩的文件目录 * @param zos * zip输出流 * @param name * 压缩后的zip名称 * @param KeepDirStructure * 是否保留原来的目录结构（false:不保留；true:保留） * @throws Exception */ private static void compress(File sourceFile, ZipOutputStream zos, String name, boolean KeepDirStructure) throws Exception { byte[] buf = new byte[BUFFER_SIZE]; if (sourceFile.isFile()) { zos.putNextEntry(new ZipEntry(name)); int len; FileInputStream in = new FileInputStream(sourceFile); while ((len = in.read(buf)) != -1) { zos.write(buf, 0, len); } zos.closeEntry(); in.close(); } else { File[] listFiles = sourceFile.listFiles(); if (listFiles == null || listFiles.length == 0) { zos.putNextEntry(new ZipEntry(name + "/")); zos.closeEntry(); } else { for (File file : listFiles) { if (KeepDirStructure) { compress(file, zos, name + "/" + file.getName(), true); } else { compress(file, zos, file.getName(), true); } } } } } /** * 压缩成ZIP 方法2 * * @param srcFiles * 需要压缩的文件列表 * @param out * 压缩文件输出流 * @throws RuntimeException * */ public static void toZip(File[] files, String zipPath, String zipFileName) throws RuntimeException { long start = System.currentTimeMillis(); ZipOutputStream zos = null; FileOutputStream out = null; try { File zipDir = new File(zipPath); if (!zipDir.exists() || !zipDir.isDirectory()) { zipDir.mkdirs(); } File zipFile = new File(zipPath, zipFileName); out = new FileOutputStream(zipFile); zos = new ZipOutputStream(out); for (File srcFile : files) { byte[] buf = new byte[BUFFER_SIZE]; zos.putNextEntry(new ZipEntry(srcFile.getName())); int len; FileInputStream in = new FileInputStream(srcFile); while ((len = in.read(buf)) != -1) { zos.write(buf, 0, len); } zos.closeEntry(); in.close(); } long end = System.currentTimeMillis(); System.out.println("压缩完成，耗时：" + (end - start) + " ms"); } catch (Exception e) { throw new RuntimeException("zip error from ZipUtils", e); } finally { if (zos != null) { try { zos.close(); } catch (IOException e) { e.printStackTrace(); } } if (out != null) { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * 解压文件到指定目录 */ @SuppressWarnings("rawtypes") public static void unZipFiles(String zipPath, String descDir) { File zipFile = new File(zipPath); File pathFile = new File(descDir); if (!pathFile.exists()) { pathFile.mkdirs(); } // 解决zip文件中有中文目录或者中文文件 ZipFile zip = null; try { zip = new ZipFile(zipFile, Charset.forName("GBK")); for (Enumeration entries = zip.entries(); entries.hasMoreElements();) { // 输出文件路径信息 FileOutputStream out = null; InputStream in = null; try { ZipEntry entry = (ZipEntry) entries.nextElement(); String zipEntryName = entry.getName(); in = zip.getInputStream(entry); String outPath = descDir + File.separator + zipEntryName; // 判断路径是否存在,不存在则创建文件路径 // File file = new File(outPath.substring(0, outPath.lastIndexOf("/"))); File file = new File(outPath.substring(0, outPath.lastIndexOf(File.separator))); if (!file.exists()) { file.mkdirs(); } // 判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压 if (new File(outPath).isDirectory()) { continue; } out = new FileOutputStream(outPath); byte[] buf1 = new byte[1024]; int len; while ((len = in.read(buf1)) > 0) { out.write(buf1, 0, len); } } catch (Exception e) { e.printStackTrace(); } finally { if (out != null) { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } if (in != null) { try { in.close(); } catch (IOException e) { e.printStackTrace(); } } } } } catch (IOException e1) { e1.printStackTrace(); } finally { if (zip != null) { try { zip.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * 测试 */ public static void main(String[] args) throws FileNotFoundException { /* * String sourFile = "D:/testzip"; String zipPath = "D:/wl"; String zipFileName * = "tow.zip"; ZipUtil.toZip(sourFile, zipPath, zipFileName); */ /* * File sfile = new File(sourFile); List fileList = new ArrayList<>(); * for(File f : sfile.listFiles()) { fileList.add(f); } toZip(sfile.listFiles(), * zipPath, zipFileName); */ String zipPath1 = "d:/testunzip/user.zip"; String zipPath2 = "D:/testunzip/photos.zip"; String descDir1 = "d:/testunzip/"; String descDir2 = "d:/testunzip/ps"; unZipFiles(zipPath2, descDir2); }}