Flink sql中设置了时区为上海，但是时间还是少了8个小时怎么办？

tEnv.getConfig().setLocalTimeZone(ZoneId.of("Asia/Shanghai"));

CREATE TABLE tmp_orders( order_number BIGINT, price DECIMAL(32,2), buyer ROW<first_name STRING, last_name STRING>, order_time TIMESTAMP(3)) WITH ( 'connector' = 'datagen', 'rows-per-second' = '1', 'number-of-rows' = '50' );