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.io.OutputStream; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.Collection; import java.util.Enumeration; import java.util.zip.ZipEntry; import java.util.zip.ZipException; import java.util.zip.ZipFile; import java.util.zip.ZipOutputStream; /** * Android Zip压缩解压缩 */ public class Unzip { private static final int BUFF_SIZE = 1024 * 1024; // 1M Byte /** * 批量压缩文件（夹） * * @param resFileList 要压缩的文件（夹）列表 * @param zipFile 生成的压缩文件 * @throws IOException 当压缩过程出错时抛出 */ public static void zipFiles(Collection<File> resFileList, File zipFile) throws IOException { ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream( zipFile), BUFF_SIZE)); for (File resFile : resFileList) { zipFile(resFile, zipout, ""); } zipout.close(); } /** * 批量压缩文件（夹） * * @param resFileList 要压缩的文件（夹）列表 * @param zipFile 生成的压缩文件 * @param comment 压缩文件的凝视 * @throws IOException 当压缩过程出错时抛出 */ public static void zipFiles(Collection<File> resFileList, File zipFile, String comment) throws IOException { ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream( zipFile), BUFF_SIZE)); for (File resFile : resFileList) { zipFile(resFile, zipout, ""); } zipout.setComment(comment); zipout.close(); } /** * 解压缩一个文件 * * @param zipFile 压缩文件 * @param folderPath 解压缩的目标文件夹 * @param isDelete * @throws IOException 当解压缩过程出错时抛出 */ public static void upZipFile(File zipFile, String folderPath, boolean isDelete) { String strZipName = zipFile.getName(); folderPath += "/" + strZipName.substring(0, strZipName.lastIndexOf(".")); File desDir = new File(folderPath); if (!desDir.exists()) { desDir.mkdirs(); } ZipFile zf; try { zf = new ZipFile(zipFile); for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) { ZipEntry entry = ((ZipEntry)entries.nextElement()); if(entry.isDirectory()) { String dirstr = entry.getName(); dirstr = new String(dirstr.getBytes("8859_1"), "GB2312"); File f=new File(dirstr); f.mkdir(); continue; } InputStream in = zf.getInputStream(entry); String str = folderPath + File.separator + entry.getName(); str = new String(str.getBytes("8859_1"), "GB2312"); File desFile = new File(str); if (!desFile.exists()) { File fileParentDir = desFile.getParentFile(); if (!fileParentDir.exists()) { fileParentDir.mkdirs(); } desFile.createNewFile(); } OutputStream out = new FileOutputStream(desFile); byte buffer[] = new byte[BUFF_SIZE]; int realLength; while ((realLength = in.read(buffer)) > 0) { out.write(buffer, 0, realLength); } in.close(); out.close(); } if (isDelete) { zipFile.delete(); } } catch (ZipException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /** * 解压文件名称包括传入文字的文件 * * @param zipFile 压缩文件 * @param folderPath 目标文件夹 * @param nameContains 传入的文件匹配名 * @throws ZipException 压缩格式有误时抛出 * @throws IOException IO错误时抛出 */ public static ArrayList<File> upZipSelectedFile(File zipFile, String folderPath, String nameContains) throws ZipException, IOException { ArrayList<File> fileList = new ArrayList<File>(); File desDir = new File(folderPath); if (!desDir.exists()) { desDir.mkdir(); } ZipFile zf = new ZipFile(zipFile); for (Enumeration<?
> entries = zf.entries(); entries.hasMoreElements();) { ZipEntry entry = ((ZipEntry)entries.nextElement()); if (entry.getName().contains(nameContains)) { InputStream in = zf.getInputStream(entry); String str = folderPath + File.separator + entry.getName(); str = new String(str.getBytes("8859_1"), "GB2312"); // str.getBytes("GB2312"),"8859_1" 输出 // str.getBytes("8859_1"),"GB2312" 输入 File desFile = new File(str); if (!desFile.exists()) { File fileParentDir = desFile.getParentFile(); if (!fileParentDir.exists()) { fileParentDir.mkdirs(); } desFile.createNewFile(); } OutputStream out = new FileOutputStream(desFile); byte buffer[] = new byte[BUFF_SIZE]; int realLength; while ((realLength = in.read(buffer)) > 0) { out.write(buffer, 0, realLength); } in.close(); out.close(); fileList.add(desFile); } } return fileList; } /** * 获得压缩文件内文件列表 * * @param zipFile 压缩文件 * @return 压缩文件内文件名称称 * @throws ZipException 压缩文件格式有误时抛出 * @throws IOException 当解压缩过程出错时抛出 */ public static ArrayList<String> getEntriesNames(File zipFile) throws ZipException, IOException { ArrayList<String> entryNames = new ArrayList<String>(); Enumeration<?
> entries = getEntriesEnumeration(zipFile); while (entries.hasMoreElements()) { ZipEntry entry = ((ZipEntry)entries.nextElement()); entryNames.add(new String(getEntryName(entry).getBytes("GB2312"), "8859_1")); } return entryNames; } /** * 获得压缩文件内压缩文件对象以取得其属性 * * @param zipFile 压缩文件 * @return 返回一个压缩文件列表 * @throws ZipException 压缩文件格式有误时抛出 * @throws IOException IO操作有误时抛出 */ public static Enumeration<?> getEntriesEnumeration(File zipFile) throws ZipException, IOException { ZipFile zf = new ZipFile(zipFile); return zf.entries(); } /** * 取得压缩文件对象的凝视 * * @param entry 压缩文件对象 * @return 压缩文件对象的凝视 * @throws UnsupportedEncodingException */ public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException { return new String(entry.getComment().getBytes("GB2312"), "8859_1"); } /** * 取得压缩文件对象的名称 * * @param entry 压缩文件对象 * @return 压缩文件对象的名称 * @throws UnsupportedEncodingException */ public static String getEntryName(ZipEntry entry) throws UnsupportedEncodingException { return new String(entry.getName().getBytes("GB2312"), "8859_1"); } /** * 压缩文件 * * @param resFile 须要压缩的文件（夹） * @param zipout 压缩的目的文件 * @param rootpath 压缩的文件路径 * @throws FileNotFoundException 找不到文件时抛出 * @throws IOException 当压缩过程出错时抛出 */ private static void zipFile(File resFile, ZipOutputStream zipout, String rootpath) throws FileNotFoundException, IOException { rootpath = rootpath + (rootpath.trim().length() == 0 ? "" : File.separator) + resFile.getName(); rootpath = new String(rootpath.getBytes("8859_1"), "GB2312"); if (resFile.isDirectory()) { File[] fileList = resFile.listFiles(); for (File file : fileList) { zipFile(file, zipout, rootpath); } } else { byte buffer[] = new byte[BUFF_SIZE]; BufferedInputStream in = new BufferedInputStream(new FileInputStream(resFile), BUFF_SIZE); zipout.putNextEntry(new ZipEntry(rootpath)); int realLength; while ((realLength = in.read(buffer)) != -1) { zipout.write(buffer, 0, realLength); } in.close(); zipout.flush(); zipout.closeEntry(); } } }
本文转自mfrbuaa博客园博客，原文链接：http://www.cnblogs.com/mfrbuaa/p/5282119.html，如需转载请自行联系原作者
