public RedisOutputFormatBuilder setFieldTypes(TypeInformation<?>[] fieldTypes) {
            redisOutputFormat.fieldTypes = fieldTypes;
            return this;
        }
1. build key from map.
 2. save key and value.
 3. set expired time for key when keyExpiredTime has been set.
@param refData
redis5/redis5-sink/src/main/java/com/dtstack/flink/sql/sink/redis/RedisOutputFormat.java