Android中的Zip解压缩

╰+攻爆jí腚メ 2022-08-13 17:44 181阅读 0赞

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
         * @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();
            }
        }
    }