Android文件压缩和解压

Java代码 
package com.maidong.utils; 
 
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(); 
        } 
    } 
}