Android 文件压缩和解压

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;import org.apache.http.protocol.HTTP;public class ZipUtils {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 = null;try {zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile), BUFF_SIZE));for (File resFile : resFileList) {zipFile(resFile, zipout, "");}} finally {if (zipout != null)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 *            压缩文件的注释 * @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 = null;try {zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile), BUFF_SIZE));for (File resFile : resFileList) {zipFile(resFile, zipout, "");}zipout.setComment(comment);} finally {if (zipout != null)zipout.close();}}/** * 解压缩一个文件 *  * @param zipFile *            压缩文件 * @param folderPath *            解压缩的目标目录 * @throws IOException *             当解压缩过程出错时抛出 */public static void upZipFile(File zipFile, String folderPath) throws ZipException, IOException {File desDir = new File(folderPath);if (!desDir.exists()) {desDir.mkdirs();}ZipFile zf = new ZipFile(zipFile);InputStream in = null;OutputStream out = null;try {for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {ZipEntry entry = ((ZipEntry) entries.nextElement());in = zf.getInputStream(entry);String str = folderPath + File.separator + entry.getName();str = new String(str.getBytes("8859_1"), HTTP.UTF_8);File desFile = new File(str);if (!desFile.exists()) {File fileParentDir = desFile.getParentFile();if (!fileParentDir.exists()) {fileParentDir.mkdirs();}desFile.createNewFile();}out = new FileOutputStream(desFile);byte buffer[] = new byte[BUFF_SIZE];int realLength;while ((realLength = in.read(buffer)) > 0) {out.write(buffer, 0, realLength);}}} finally {if (in != null)in.close();if (out != null)out.close();}}/** * 解压文件名包含传入文字的文件 *  * @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);InputStream in = null;OutputStream out = null;try {for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {ZipEntry entry = ((ZipEntry) entries.nextElement());if (entry.getName().contains(nameContains)) {in = zf.getInputStream(entry);String str = folderPath + File.separator + entry.getName();str = new String(str.getBytes("8859_1"), HTTP.UTF_8);// str.getBytes(AppConstans.UTF_8),"8859_1" 输出// str.getBytes("8859_1"),AppConstans.UTF_8 输入File desFile = new File(str);if (!desFile.exists()) {File fileParentDir = desFile.getParentFile();if (!fileParentDir.exists()) {fileParentDir.mkdirs();}desFile.createNewFile();}out = new FileOutputStream(desFile);byte buffer[] = new byte[BUFF_SIZE];int realLength;while ((realLength = in.read(buffer)) > 0) {out.write(buffer, 0, realLength);}fileList.add(desFile);}}} finally {if (in != null)in.close();if (out != null)out.close();}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 * @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(HTTP.UTF_8), "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注释 *  * @param entry *            压缩文件对象 * @return 压缩文件对象的注释 * @throws UnsupportedEncodingException */public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException {return new String(entry.getComment().getBytes(HTTP.UTF_8), "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(HTTP.UTF_8), "8859_1");}/** * 压缩文件 *  * @param resFile *            需要压缩的文件（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"), HTTP.UTF_8);BufferedInputStream in = null;try {if (resFile.isDirectory()) {File[] fileList = resFile.listFiles();for (File file : fileList) {zipFile(file, zipout, rootpath);}} else {byte buffer[] = new byte[BUFF_SIZE];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();}} finally {if (in != null)in.close();// if (zipout != null);// zipout.close();}}}