java解压缩文件

来源：互联网发布：淘宝背景音乐代码生成编辑：程序博客网时间：2024/04/27 15:33

压缩：

 // 压缩    public static void zip(String zipFileName, String inputFile)        throws Exception    {        File f = new File(inputFile);        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));        zip(out, f, null);        System.out.println("zip done");        out.close();    }        // 压缩    private static void zip(ZipOutputStream out, File f, String base)        throws Exception    {        if (f.isDirectory())        {            File[] fc = f.listFiles();            if (base != null)                out.putNextEntry(new ZipEntry(base + "/"));            base = base == null ? "" : base + "/";            for (int i = 0; i < fc.length; i++)            {                if (fc[i].getName().endsWith(".vmb"))                {                    continue;                }                else                {                    zip(out, fc[i], base + fc[i].getName());                }                            }        }        else        {            out.putNextEntry(new ZipEntry(base));            FileInputStream in = new FileInputStream(f);            int b;            while ((b = in.read()) != -1)                out.write(b);            in.close();        }    }

解压：

// 解压    public static void unZipFiles(String filePath, String directoryPath)    {        try        {            File filezip = new File(filePath);            ZipFile zipFile = new ZipFile(filezip);                        Enumeration enu = zipFile.entries();            String result = "";            while (enu.hasMoreElements())            {                ZipEntry entry = (ZipEntry)enu.nextElement();                String name = entry.getName();                // 如果解压entry是目录,直接生成目录即可,不用写入,如果是文件,要讲文件写入                String path = directoryPath + File.separator + name;                result = result + path + "<br/>";                File file = new File(path);                if (entry.isDirectory())                {                    file.mkdirs();                }                else                {                    // 建议使用如下方式创建 流,和读取字节,不然会有乱码(当然要根据具体环境来定)                    InputStream is = zipFile.getInputStream(entry);                    byte[] buf1 = new byte[1024];                    int len;                    if (!file.exists())                    {                        file.getParentFile().mkdirs();                        file.createNewFile();                    }                    OutputStream out = new FileOutputStream(file);                    while ((len = is.read(buf1)) > 0)                    {                        String buf = new String(buf1, 0, len);                        out.write(buf1, 0, len);                    }                    is.close();                    out.flush();                    out.close();                }            }                    }        catch (Exception e)        {            e.printStackTrace();        }            }

1 0