note: 如果目录中含有中文名称， 要用substr = new String(substr.getBytes("8859_1"), "GB2312");这样的语句转换，否则为乱码

/**        * 解压缩功能.        * 将ZIP_FILENAME文件解压到ZIP_DIR目录下.        * @throws Exception        */        public int upZipFile(File zipFile, String folderPath)throws ZipException,IOException {        //public static void upZipFile() throws Exception{                ZipFile zfile=new ZipFile(zipFile);                Enumeration zList=zfile.entries();                ZipEntry ze=null;                byte[] buf=new byte[1024];                while(zList.hasMoreElements()){                        ze=(ZipEntry)zList.nextElement();                        if(ze.isDirectory()){                                Log.d("upZipFile", "ze.getName() = "+ze.getName());                                String dirstr = folderPath + ze.getName();                                //dirstr.trim();                                dirstr = new String(dirstr.getBytes("8859_1"), "GB2312");                                Log.d("upZipFile", "str = "+dirstr);                    File f=new File(dirstr);                    f.mkdir();                                continue;                        }                        Log.d("upZipFile", "ze.getName() = "+ze.getName());                        OutputStream os=new BufferedOutputStream(new FileOutputStream(getRealFileName(folderPath, ze.getName())));                        InputStream is=new BufferedInputStream(zfile.getInputStream(ze));                        int readLen=0;                        while ((readLen=is.read(buf, 0, 1024))!=-1) {                                os.write(buf, 0, readLen);                        }                        is.close();                        os.close();                }                zfile.close();                return 0;        }   /**        * 给定根目录，返回一个相对路径所对应的实际文件名.        * @param baseDir 指定根目录        * @param absFileName 相对路径名，来自于ZipEntry中的name        * @return java.io.File 实际的文件        */        public static File getRealFileName(String baseDir, String absFileName){                String[] dirs=absFileName.split("/");                File ret=new File(baseDir);                String substr = null;                if(dirs.length>1){                        for (int i = 0; i < dirs.length-1;i++) {                                substr = dirs[i];                                try {                                        //substr.trim();                                        substr = new String(substr.getBytes("8859_1"), "GB2312");                                } catch (UnsupportedEncodingException e) {                                        // TODO Auto-generated catch block                                        e.printStackTrace();                                }                                ret=new File(ret, substr);                        }                        Log.d("upZipFile", "1ret = "+ret);                        if(!ret.exists())                                ret.mkdirs();                        substr = dirs[dirs.length-1];                        try {                                //substr.trim();                                substr = new String(substr.getBytes("8859_1"), "GB2312");                                Log.d("upZipFile", "substr = "+substr);                        } catch (UnsupportedEncodingException e) {                                // TODO Auto-generated catch block                                e.printStackTrace();                        }                        ret=new File(ret, substr);                        Log.d("upZipFile", "2ret = "+ret);                        return ret;                }             return ret;        }