修改参数

 /**
   * conn.setOptionSync(conn.MYSQL_OPT_CONNECT_TIMEOUT, 2);
  conn.setOptionSync(conn.MYSQL_OPT_READ_TIMEOUT, config.readTimeout);
  conn.setOptionSync(conn.MYSQL_OPT_WRITE_TIMEOUT, config.writeTimeout);
  conn.setOptionSync(conn.MYSQL_OPT_RECONNECT, 1); //×Ô¶¯ÖØÁ¬
  */
  
    conn.setOptionSync(0, 2);
  conn.setOptionSync(11, config.readTimeout);
  conn.setOptionSync(12, config.writeTimeout);
  conn.setOptionSync(20, 1); //×Ô¶¯ÖØÁ¬