java解壓

 

public static String mmUnzip(String pSource, String pPath) {

    System.out
            .println(" mmUnzip mm  " + pPath + "  UnzipmmUnzip  " + pPath);

    String mmSource = pSource;
    String mmPath = pPath;
    File fileM = new File(mmSource);
    if (!fileM.exists()) {
        System.out.println(" not exits  ");
        return "";
    }

    File zipFile = new File(mmSource);
    if (!zipFile.exists()) {
        System.out.println(" not exits  zipFile ");
        return "";
    }

    // zipFile.delete(); 解壓後刪除原zip刪除

    try {
        unZipFile(zipFile, mmPath);
    } catch (ZipException e) {// 解壓不成功
        zipFile.delete();
        e.printStackTrace();
        return "";
    } catch (IOException e) {
        zipFile.delete();
        e.printStackTrace();
        return "";
    }

    // zipFile.delete();
    return "ok";
}

 

public static void unZipFile(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();) {//枚舉裏面有幾個文件
            ZipEntry entry = ((ZipEntry) entries.nextElement());
            // 後面插入判斷是否爲文件夾，如果是不處理
            String name = entry.getName();
            if (name.endsWith(File.separator))
                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[1024];
            int realLength;
            while ((realLength = in.read(buffer)) > 0) {
                out.write(buffer, 0, realLength);
            }
            in.close();
            out.close();
        }
    }