Android zip文件压缩解压缩

fmms 8年前
     <pre class="brush:java; toolbar: true; auto-links: false;">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;     } }</pre>    <pre class="brush:java; toolbar: true; auto-links: false;">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();         }     } }</pre>    <br />