unzip (for Java)

ZipUtil.java

    public static void unzip(String zipFilePath, File dstDir) {
        try {
            final ZipFile zipFile = new ZipFile(zipFilePath);
            Enumeration<? extends ZipEntry> enumZip = zipFile.entries();
            while (enumZip.hasMoreElements()) {
                final ZipEntry zipEntry = enumZip.nextElement();

                // 出力先設定
                File dstFile = new File(dstDir, zipEntry.getName());
                if (dstFile.isDirectory()) {
                    continue;
                }
                File parentDir = dstFile.getParentFile();
                if (!parentDir.exists()) {
                    parentDir.mkdirs();
                }
                System.out.println(dstFile.getPath());

                // 出力
                writeZipEntry2File(zipFile, zipEntry, dstFile);
            }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void writeZipEntry2File(ZipFile zipFile, ZipEntry zipEntry, File dstFile) {
        try {
            writeStream2File(zipFile.getInputStream(zipEntry), dstFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void writeStream2File(InputStream srcStream, File dstFile) {
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        try {
            bis = new BufferedInputStream(srcStream);
            bos = new BufferedOutputStream(new FileOutputStream(dstFile));
            byte[] buffer = new byte[1024];
            int readSize = 0;
            while ((readSize = bis.read(buffer)) != -1) {
                bos.write(buffer, 0, readSize);
            }
            bos.flush();

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (bos != null) {
                try {
                    bos.close();
                } catch (IOException e) {
                }
            }
            if (bis != null) {
                try {
                    bis.close();
                } catch (IOException e) {
                }
            }
        }
    }