How to parse JSON

vancouver·2023년 5월 6일

BackEnd Develop : NODE.js

목록 보기

7/9

HTTPS statusCode

const https = require("https");

app.get("/", function(req, res){

    const url = "https://api.openweathermap.org/data/2.5/weather?q=Seoul&appid=84943bd3618afc411e14670414503835"

    https.get(url, function(response){
        console.log(response.statusCode); //statusCode를 넣음으로써 하이퍼터미널에서 상태코드를 확인할수있음.
    })

on callback

  response.on("data", function(data){
        console.log(data);
    })

hyper Terminal

JSON parse

 response.on("data", function(data){
        const weatherData = JSON.parse(data)
        console.log(weatherData);

hyper Terminal

{
coord: { lon: 126.9778, lat: 37.5683 },
weather: [
{
id: 501,
main: 'Rain',
description: 'moderate rain',
icon: '10d'
}
],
base: 'stations',
main: {
temp: 13.21,
feels_like: 12.65,
temp_min: 12.66,
temp_max: 13.76,
pressure: 1009,
humidity: 79
},
visibility: 10000,
wind: { speed: 5.66, deg: 40 },
rain: { '1h': 1.59 },
clouds: { all: 75 },
dt: 1683359030,
sys: {
type: 1,
id: 8105,
country: 'KR',
sunrise: 1683318724,
sunset: 1683368723
},
timezone: 32400,
id: 1835848,
name: 'Seoul',
cod: 200
}

JSON.stringfy(object)

data를 객체화 시켜 줄일수 있다.

 response.on("data", function(data){
        const weatherData = JSON.parse(data)
        const object = {
            name: "Vancouver",
            
        }
        console.log(JSON.stringify(object));
    })

hyper Terminal

{"name":"Vancouver"}

원하는 data 뽑아내기

 response.on("data", function(data){
        const weatherData = JSON.parse(data)
        const temp = weatherData.main.temp
        console.log(temp);

hyper Terminal

before
main: {
temp: 13.21,
after
13.21

 response.on("data", function(data){
 const weatherData = JSON.parse(data)
 const description = weatherData.weather[0].description
        console.log(description);