JdbcTemplate generic Mysql Primary key value by update method

Generic_DB_Key

    /**
     * 插入一条记录
     *
     * @param columns
     * @param values
     * @return
     */
    public long insert(String[] columns, Object[] values) {
        String sql = insertSql(columns);
        KeyHolder keyHolder = new GeneratedKeyHolder();
        getJdbcTemplate().update(x -> {
            PreparedStatement ps = getJdbcTemplate().getDataSource().getConnection()
                    .prepareStatement(sql,  PreparedStatement.RETURN_GENERATED_KEYS);
            for (int i = 0; i < values.length; i++) {
                ps.setObject(i+1, values[i]);
            }
            return ps;
        }, keyHolder);

        return keyHolder.getKey().longValue();
    }