Node-red获取实时天气数据

第一步:在节点管里下载“weather”,并安装,如下图:


image.png

第二步:在侧边栏找到“weather”并拖入流程,如下图:


image.png

第三步:在流程中拖入“function”,并写入以下代码,如下图:
let code;
code = msg.payload.current.weather;
        switch(code) {
        case '0':
            status = '晴'
            break;
        case '1':
            status = '多云'
            break;
        case '2':
            status = '阴'
            break;
        case '3':
            status = '阵雨'
            break;
        case '4':
            status = '雷阵雨'
            break;
        case '5':
            status = '雷阵雨并伴有冰雹'
            break;
        case '6':
            status = '雨夹雪'
            break;
        case '7':
            status = '小雨'
            break;
        case '8':
            status = '中雨'
            break;
        case '9':
            status = '大雨'
            break;
        case '10':
            status = '暴雨'
            break;
        case '11':
            status = '大暴雨'
            break;
        case '12':
            status = '特大暴雨'
            break;
        case '13':
            status = '阵雪'
            break;
        case '14':
            status = '小雪'
            break;
        case '15':
            status = '中雪'
            break;
        case '16':
            status = '大雪'
            break;
        case '17':
            status = '暴雪'
            break;
        case '18':
            status = '雾'
            break;
        case '19':
            status = '冻雨'
            break;
        case '20':
            status = '沙尘暴'
            break;
        case '21':
            status = '小雨转中雨'
            break;
        case '22':
            status = '中雨转大雨'
            break;
        case '23':
            status = '大雨转暴雨'
            break;
        case '24':
            status = '暴雨转大暴雨'
            break;
        case '25':
            status = '大暴雨转特大暴雨'
            break;
        case '26':
            status = '小雪转中雪'
            break;
        case '27':
            status = '中雪转大雪'
            break;
        case '28':
            status = '大雪转暴雪'
            break;
        case '29':
            status = '浮沉'
            break;
        case '30':
            status = '扬沙'
            break;
        case '31':
            status = '强沙尘暴'
            break;
        case '32':
            status = '飑'
            break;
        case '33':
            status = '龙卷风'
            break;
        case '34':
            status = '若高吹雪'
            break;
        case '35':
            status = '轻雾'
            break;
        case '53':
            status = '霾'
            break;
        case '99':
            status = '未知'
            break;
        default:
            status = '无数据'
            break;
        }
return msg;

第四步:在流程中拖入“debug”,用于监测调试窗口,如下图:


image.png

第五步:在流程中拖入“link in”、“linkout”用于做输入输出链接,如下图:


image.png

第六步:根据需要显示的数据,在流程中拖入“function”,标注相对应的功能,这里我做的比较全面,依次按照顺序代码如下:
1,获取天气类型:
var result = {
    payload: ""
}

var tq = msg.payload.current.weather;
switch(tq) {
case '0':
    result.payload = '晴'
    break;
case '1':
    result.payload = '多云'
    break;
case '2':
    result.payload = '阴'
    break;
case '3':
    result.payload = '阵雨'
    break;
case '4':
    result.payload = '雷阵雨'
    break;
case '5':
    result.payload = '雷阵雨并伴有冰雹'
    break;
case '6':
    result.payload = '雨夹雪'
    break;
case '7':
    result.payload = '小雨'
    break;
case '8':
    result.payload = '中雨'
    break;
case '9':
    result.payload = '大雨'
    break;
case '10':
    result.payload = '暴雨'
    break;
case '11':
    result.payload = '大暴雨'
    break;
case '12':
    result.payload = '特大暴雨'
    break;
case '13':
    result.payload = '阵雪'
    break;
case '14':
    result.payload = '小雪'
    break;
case '15':
    result.payload = '中雪'
    break;
case '16':
    result.payload = '大雪'
    break;
case '17':
    result.payload = '暴雪'
    break;
case '18':
    result.payload = '雾'
    break;
case '19':
    result.payload = '冻雨'
    break;
case '20':
    result.payload = '沙尘暴'
    break;
case '21':
    result.payload = '小雨转中雨'
    break;
case '22':
    result.payload = '中雨转大雨'
    break;
case '23':
    result.payload = '大雨转暴雨'
    break;
case '24':
    result.payload = '暴雨转大暴雨'
    break;
case '25':
    result.payload = '大暴雨转特大暴雨'
    break;
case '26':
    result.payload = '小雪转中雪'
    break;
case '27':
    result.payload = '中雪转大雪'
    break;
case '28':
    result.payload = '大雪转暴雪'
    break;
case '29':
    result.payload = '浮沉'
    break;
case '30':
    result.payload = '扬沙'
    break;
case '31':
    result.payload = '强沙尘暴'
    break;
case '32':
    result.payload = '飑'
    break;
case '33':
    result.payload = '龙卷风'
    break;
case '34':
    result.payload = '若高吹雪'
    break;
case '35':
    result.payload = '轻雾'
    break;
case '53':
    result.payload = '霾'
    break;
case '99':
    result.payload = '未知'
    break;
default:
    result.payload = '无数据'
    break;
}

return result;

2,获取体感温度:

var result = {
    payload: msg.payload.current.feelsLike.value
}
return result; 

3,获取当前温度:

var result = {
    payload: msg.payload.current.temperature.value
}
return result; 

4,获取当前湿度:

var result = {
    payload: msg.payload.current.humidity.value
}
return result;

5,获取当前气压:

var result = {
    payload: msg.payload.current.pressure.value
}
return result;

6,获取当前风速:

var result = {
    payload: msg.payload.current.wind.speed.value
}
return result;

7,获取当前空气质量:

var result = {
    payload: msg.payload.aqi.aqi
}
return result;

8,获取当前PM2.5:

var result = {
    payload: msg.payload.aqi.pm25
}
return result;

9,获取未来14天的气温状态:

var payload = [{
    "series": ["最低温度", "最高温度"],
    "data": [
//        [{ "x": 1504029632890, "y": 50 },
//         { "x": 1504029636001, "y": 40 },
//         { "x": 1504029638656, "y": 20 },
//         { "x": 1504029640666, "y": 20 }
//        ],
//        [{ "x": 1504029633514, "y": 6 },
//         { "x": 1504029636622, "y": 7 },
//         { "x": 1504029639539, "y": 6 }
//        ]
    ],
    "labels": []
}];
var lTemp = [];
var hTemp = [];

var values = msg.payload.forecastDaily.temperature.value;
var date = new Date();
date.setHours(0);
date.setMinutes(0);
date.setSeconds(0);
date.setMilliseconds(0);
var x = date.getTime();
for(var i in values) {
    lTemp.push({
        "x": x,
        "y": values[i]['to']
    });
    hTemp.push({
        "x": x,
        "y": values[i]['from']
    });
    x = new Date(x + 24 * 60 * 60 * 1000).getTime();
}
payload[0].data.push(lTemp);
payload[0].data.push(hTemp);

return {
    'payload': payload
};

10,获取PM10:

var result = {
    payload: msg.payload.aqi.pm10
}
return result;

11,获取一氧化碳CO:

var result = {
    payload: msg.payload.aqi.co
}
return result;

12:获取二氧化氮NO2:

var result = {
    payload: msg.payload.aqi.co
}
return result;

13:获取臭氧O3:

var result = {
    payload: msg.payload.aqi.o3
}
return result;

14:获取二氧化硫SO2:

var result = {
    payload: msg.payload.aqi.so2
}
return result;

15:获取数据来源:

var result = {
    payload: msg.payload.aqi.src
}
return result;

第七步:如果还想对一些获取到的数据进行进一步的说明,可以参考调试窗口的一些信息,如下图:


image.png

第八步:在流程里链接相应的模块,如下图:


image.png

第九步:进入UI界面,看一下效果,具体的一些表现方式还可以根据自己的实际需要调整,我做的如下图,以供参考:
image.png

以上仅为个人参考网络上众多资料的一些实施操作。

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