code: public int insert(Entity record) throws SQLException {
  		Connection conn = null;
  		try {
  			conn = this.getConnection();
  			return runner.insert(conn, record);
  		} catch (SQLException e) {
  			throw e;
  		} finally {
  			this.closeConnection(conn);
  		}
  	}
docs: 插入数据
  
  @param record 记录
  @return 插入行数
  @throws SQLException SQL执行异常