byte数组和文件互相转换

来源：互联网发布：手机桌面优化软件编辑：程序博客网时间：2024/05/24 07:01
/**      * 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();                  }              }          }      }
0 0