/**

     * 获得指定文件的byte数组

     */

    private byte[] getBytes(String filePath){

        byte[] buffer = null;

        try {

            File file = new File(filePath);

            FileInputStream fis = new FileInputStream(file);

            ByteArrayOutputStream bos = new ByteArrayOutputStream(1000);

            byte[] b = new byte[1000];

            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;

    }

    /**

     * 根据byte数组，生成文件

     */

    public static void getFile(byte[] bfile, String filePath,String fileName) {

        BufferedOutputStream bos = null;

        FileOutputStream fos = null;

        File file = null;

        try {

            File dir = new File(filePath);

            if(!dir.exists()&&dir.isDirectory()){//判断文件目录是否存在

                dir.mkdirs();

            }

            file = new File(filePath+"\\"+fileName);

            fos = new FileOutputStream(file);

            bos = new BufferedOutputStream(fos);

            bos.write(bfile);

        } catch (Exception e) {

            e.printStackTrace();

        } finally {

            if (bos != null) {

                try {

                    bos.close();

                } catch (IOException e1) {

                    e1.printStackTrace();

                }

            }

            if (fos != null) {

                try {

                    fos.close();

                } catch (IOException e1) {

                    e1.printStackTrace();

                }

            }

        }

    }