Android中的Zip解壓縮

標籤：android   壓縮   zip   解壓   

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壓縮解壓縮 */public class Unzip {private static final int BUFF_SIZE = 1024 * 1024; // 1M Byte     /**     * 批量壓縮檔（夾）     *     * @param resFileList 要壓縮的檔案（夾）列表     * @param zipFile 產生的壓縮檔     * @throws IOException 當壓縮過程出錯時拋出     */    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();    }     /**     * 批量壓縮檔（夾）     *     * @param resFileList 要壓縮的檔案（夾）列表     * @param zipFile 產生的壓縮檔     * @param comment 壓縮檔的注釋     * @throws IOException 當壓縮過程出錯時拋出     */    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();    }     /**     * 解壓縮一個檔案     *     * @param zipFile 壓縮檔     * @param folderPath 解壓縮的目標目錄     * @param isDelete      * @throws IOException 當解壓縮過程出錯時拋出     */    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();}    }     /**     * 解壓檔案名稱包含傳入文字的檔案     *     * @param zipFile 壓縮檔     * @param folderPath 目標檔案夾     * @param nameContains 傳入的檔案匹配名     * @throws ZipException 壓縮格式有誤時拋出     * @throws IOException IO錯誤時拋出     */    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" 輸出                // str.getBytes("8859_1"),"GB2312" 輸入                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;    }     /**     * 獲得壓縮檔內檔案清單     *     * @param zipFile 壓縮檔     * @return 壓縮檔內檔案名稱     * @throws ZipException 壓縮檔格式有誤時拋出     * @throws IOException 當解壓縮過程出錯時拋出     */    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;    }     /**     * 獲得壓縮檔內壓縮檔對象以取得其屬性     *     * @param zipFile 壓縮檔     * @return 返回一個壓縮檔列表     * @throws ZipException 壓縮檔格式有誤時拋出     * @throws IOException IO操作有誤時拋出     */    public static Enumeration<?> getEntriesEnumeration(File zipFile) throws ZipException,            IOException {        ZipFile zf = new ZipFile(zipFile);        return zf.entries();     }     /**     * 取得壓縮檔對象的注釋     *     * @param entry 壓縮檔對象     * @return 壓縮檔對象的注釋     * @throws UnsupportedEncodingException     */    public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException {        return new String(entry.getComment().getBytes("GB2312"), "8859_1");    }     /**     * 取得壓縮檔對象的名稱     *     * @param entry 壓縮檔對象     * @return 壓縮檔對象的名稱     * @throws UnsupportedEncodingException     */    public static String getEntryName(ZipEntry entry) throws UnsupportedEncodingException {        return new String(entry.getName().getBytes("GB2312"), "8859_1");    }     /**     * 壓縮檔     *     * @param resFile 需要壓縮的檔案（夾）     * @param zipout 壓縮的目的檔案     * @param rootpath 壓縮的檔案路徑     * @throws FileNotFoundException 找不到檔案時拋出     * @throws IOException 當壓縮過程出錯時拋出     */    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();        }    }}

Android中的Zip解壓縮