screen-api 根据AQI计算污染等级

kaiyu

2021-10-29 113a18ea7368ebc5fbadc211ad3ee1feb743929d

 screen-api/src/main/java/com/moral/api/service/impl/CityAqiServiceImpl.java

@@ -1,5 +1,6 @@
package com.moral.api.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.moral.api.entity.CityAqi;
@@ -8,9 +9,12 @@
import com.moral.api.mapper.ForecastMapper;
import com.moral.api.service.CityAqiService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.moral.constant.RedisConstants;
import com.moral.util.AQIUtils;
import com.moral.util.DateUtils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;

@@ -36,6 +40,9 @@

    @Autowired
    private ForecastMapper forecastMapper;

    @Autowired
    private RedisTemplate redisTemplate;

    @Override
    public List<Map<String, Object>> measuredCompareForecastOfO3(Map<String, Object> params) {
@@ -92,4 +99,38 @@
        }
        return result;
    }

    @Override
    public Map<String, Object> queryCityAqiByRegionCode(Integer regionCode) {
        Map<String,Object> value = (Map<String, Object>) redisTemplate.opsForHash().get(RedisConstants.CITY_AQI,String.valueOf(regionCode));
        if(value==null)
            value = queryCityAqiByRegionCodeFromDB(regionCode);
        //根据AQI计算污染等级
        if(value==null||value.get("aqi")==null)
            return null;
        Integer aqi = Integer.parseInt(value.get("aqi").toString());
        String category = AQIUtils.classOfPollutionByAqi(aqi);
        value.put("category",category);
        return value;
    }

    /**
    * @Description: 从数据库查询数据
            * @Param: [regionCode]
            * @return: java.util.Map<java.lang.String,java.lang.Object>
            * @Author: 陈凯裕
            * @Date: 2021/10/28
            */
    private Map<String, Object> queryCityAqiByRegionCodeFromDB(Integer regionCode) {
        QueryWrapper<CityAqi> wrapper = new QueryWrapper();
        wrapper.eq("city_code",regionCode);
        wrapper.orderByDesc("time");
        wrapper.last(true,"limit 1");
        CityAqi cityAqi = cityAqiMapper.selectOne(wrapper);
        if(cityAqi==null)
            return null;
        String value = cityAqi.getValue();
        redisTemplate.opsForHash().put(RedisConstants.CITY_AQI,regionCode,value);
        return  JSON.parseObject(value,Map.class);
    }
}