/**      * 获得指定文件的byte数组      */      public static 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;      }