File和byte[]轉換__Java基礎

public static byte[] File2byte(String filePath){byte[] buffer = null;try{File file = new File(filePath);FileInputStream fis = new FileInputStream(file);ByteArrayOutputStream bos = new ByteArrayOutputStream();byte[] b = new byte[1024];int n;while ((n = fis.read(b)) != -1){bos.write(b, 0, n);}fis.close();bos.close();buffer = bos.toByteArray();}catch (FileNotFoundException e){e.printStackTrace();}catch (IOException e){e.printStackTrace();}return buffer;}public static void byte2File(byte[] buf, String filePath, String fileName){BufferedOutputStream bos = null;FileOutputStream fos = null;File file = null;try{File dir = new File(filePath);if (!dir.exists() && dir.isDirectory()){dir.mkdirs();}file = new File(filePath + File.separator + fileName);fos = new FileOutputStream(file);bos = new BufferedOutputStream(fos);bos.write(buf);}catch (Exception e){e.printStackTrace();}finally{if (bos != null){try{bos.close();}catch (IOException e){e.printStackTrace();}}if (fos != null){try{fos.close();}catch (IOException e){e.printStackTrace();}}}}

下載： Apache_Mina_Server_2.0中文參考手冊V1.0.pdf