Node.js Express 请求天气 API

Question

Node.js Express 请求天气 API

4

我正在使用Node.js、Express、Request和EJS进行开发。以下代码可以正常运行，但JSON数据没有更新。当我查看原始的JSON URL时，与我的应用程序显示的数据不同。

app.js文件：

var express = require("express");
var app = express();
var request = require("request");

app.set("view engine", "ejs");
app.use(express.static(__dirname + "/public"));

app.get("/", function(req, res){
    const weatherURL = "https://api.aerisapi.com/forecasts/:auto?&format=json&limit=1&client_id=" + apiId + "&client_secret=" + apiSecret;
    request(weatherURL, function(error, response, body){
    let weather_json = JSON.parse(body);
    const weather = {
        forecast : weather_json.response[0].periods[0].weather,
        temp: weather_json.response[0].periods[0].feelslikeF,
        icon : weather_json.response[0].periods[0].icon
    };
    res.render("index", {weather: weather});
    });
});

app.listen(process.env.PORT, process.env.IP, function(){
    console.log("App has Started!");
});

我的应用程序显示“局部多云，偶有风暴，温度为65°F”，但实际上应该是“局部多云，温度为62°F”。

可能是JSON被缓存了？

来自URL的JSON：

{"success":true,"error":null,"response":[{"loc":{"long":-83.814,"lat":35.341},"interval":"daynight","periods":[{"timestamp":1538650800,"validTime":"2018-10-04T07:00:00-04:00","dateTimeISO":"2018-10-04T07:00:00-04:00","maxTempC":29,"maxTempF":85,"minTempC":null,"minTempF":null,"avgTempC":25,"avgTempF":77,"tempC":null,"tempF":null,"pop":7,"precipMM":0,"precipIN":0,"iceaccum":0,"iceaccumMM":0,"iceaccumIN":0,"maxHumidity":92,"minHumidity":60,"humidity":70,"uvi":7,"pressureMB":1019,"pressureIN":30.09,"sky":43,"snowCM":0,"snowIN":0,"feelslikeC":17,"feelslikeF":62,"minFeelslikeC":17,"minFeelslikeF":62,"maxFeelslikeC":31,"maxFeelslikeF":88,"avgFeelslikeC":26,"avgFeelslikeF":79,"dewpointC":17,"dewpointF":62,"maxDewpointC":20,"maxDewpointF":68,"minDewpointC":17,"minDewpointF":62,"avgDewpointC":19,"avgDewpointF":66,"windDirDEG":150,"windDir":"SSE","windDirMaxDEG":290,"windDirMax":"WNW","windDirMinDEG":280,"windDirMin":"W","windGustKTS":6,"windGustKPH":11,"windGustMPH":7,"windSpeedKTS":2,"windSpeedKPH":4,"windSpeedMPH":3,"windSpeedMaxKTS":4,"windSpeedMaxKPH":8,"windSpeedMaxMPH":5,"windSpeedMinKTS":1,"windSpeedMinKPH":2,"windSpeedMinMPH":1,"windDir80mDEG":224,"windDir80m":"SW","windDirMax80mDEG":290,"windDirMax80m":"WNW","windDirMin80mDEG":280,"windDirMin80m":"W","windGust80mKTS":5,"windGust80mKPH":8,"windGust80mMPH":5,"windSpeed80mKTS":4,"windSpeed80mKPH":7,"windSpeed80mMPH":4,"windSpeedMax80mKTS":5,"windSpeedMax80mKPH":8,"windSpeedMax80mMPH":5,"windSpeedMin80mKTS":2,"windSpeedMin80mKPH":3,"windSpeedMin80mMPH":2,"weather":"Partly Cloudy","weatherCoded":[{"timestamp":1538650800,"wx":"PA::F","dateTimeISO":"2018-10-04T07:00:00-04:00"}],"weatherPrimary":"Partly Cloudy","weatherPrimaryCoded":"::SC","cloudsCoded":"SC","icon":"pcloudy.png","isDay":true}],"profile":{"tz":"America\/New_York"}}]}

- Anthony

你能否在 res.render 之前加上 console.log(weather) 并将控制台输出也包含在内？ - pandamakes

console.log: { forecast: '局部多云，有零星阵雨', temp: 65, icon: 'pcloudyr.png' } { forecast: '局部多云，有零星阵雨', temp: 65, icon: 'pcloudyr.png' } 我不确定为什么它会打印两遍，但确实如此。 - Anthony

当你说“从URL获取JSON”时，你的意思是通过curl或postman或类似工具运行请求URL吗？ - pandamakes

浏览器中的URL - Anthony

1

嗯，我想知道aerisapi是否因为用户代理或从浏览器提取的某些元数据而对GET请求做出不同的响应。您可以执行curl URL并将输出粘贴到命令行中吗？如果您的机器上没有curl，您可以修改console.log以打印weather_json.response[0].loc，并将其与从浏览器中获取的内容进行比较。 - pandamakes

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2个回答

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- Flavio Li Volsi · Answer 1

如果您认为数据正在被缓存，可以尝试在查询参数中添加时间戳。类似这样的内容：

const weatherURL = "https://api.aerisapi.com/forecasts/:auto?&format=json&limit=1&client_id=" + apiId + "&client_secret=" + apiSecret + "&t=" + Date.now();

- deerawan · Answer 2

我试图重现你的问题，但是无法做到，在原始 JSON 和视图中显示的数据之间总是匹配

也许这与ejs缓存有关，你尝试添加过这行代码吗？

app.disable('view cache');