Android(安卓)zip文件压缩解压缩

本文来源：http://www.oschina.net/code/snippet_4873_4142

[代码] DirTraversal.java

package com.once;import java.io.File;import java.util.ArrayList;import java.util.LinkedList;/** *  文件夹遍历 * @author once * */public class DirTraversal {        //no recursion    public static LinkedList<File> listLinkedFiles(String strPath) {        LinkedList<File> list = new LinkedList<File>();        File dir = new File(strPath);        File file[] = dir.listFiles();        for (int i = 0; i < file.length; i++) {            if (file[i].isDirectory())                list.add(file[i]);            else                System.out.println(file[i].getAbsolutePath());        }        File tmp;        while (!list.isEmpty()) {            tmp = (File) list.removeFirst();            if (tmp.isDirectory()) {                file = tmp.listFiles();                if (file == null)                    continue;                for (int i = 0; i < file.length; i++) {                    if (file[i].isDirectory())                        list.add(file[i]);                    else                        System.out.println(file[i].getAbsolutePath());                }            } else {                System.out.println(tmp.getAbsolutePath());            }        }        return list;    }        //recursion    public static ArrayList<File> listFiles(String strPath) {        return refreshFileList(strPath);    }    public static ArrayList<File> refreshFileList(String strPath) {        ArrayList<File> filelist = new ArrayList<File>();        File dir = new File(strPath);        File[] files = dir.listFiles();        if (files == null)            return null;        for (int i = 0; i < files.length; i++) {            if (files[i].isDirectory()) {                refreshFileList(files[i].getAbsolutePath());            } else {                if(files[i].getName().toLowerCase().endsWith("zip"))                    filelist.add(files[i]);            }        }        return filelist;    }}

[代码] ZipUtils.java

package com.once;import java.io.*;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;/** * Java utils 实现的Zip工具 * * @author once */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 = 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 = 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);        for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {            ZipEntry entry = ((ZipEntry)entries.nextElement());            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();        }    }    /**     * 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);        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     * @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("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 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"), "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();        }    }}

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