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sql = "update imagetable set image = £¿where id='1'";
PreparedStatement pstmt = null;
try
  {
      pstmt = con.prepareStatement(sql);
      File f = new File(path);
      FileInputStream in = new FileInputStream(f);
      pstmt.setBinaryStream(1, in, (int) (f.length()));
      pstmt.executeUpdate();£½£½£½£½ÕâÀﱨÁËÒì³£
    }
catch (Exception e)
    {
      e.printStackTrace(System.out);
      throw new DataAccessResourceFailureException(e.getMessage());
    }


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