开发者必备：免费天气 API 接口集成指南与案例分析

https://api.openweathermap.org/data/3.0/onecall?lat=39.9042&lon=116.4074&exclude=minutely,hourly&appid=你的API密钥&units=metric

import requests

def get_weather(lat, lon, api_key):
    url = f"https://api.openweathermap.org/data/3.0/onecall?lat={lat}&lon={lon}&exclude=minutely,hourly&appid={api_key}&units=metric"
    response = requests.get(url)
    data = response.json()
    return data

# 调用示例
weather_data = get_weather(39.9042, 116.4074, "你的API密钥")
print(weather_data)

current_temp = weather_data['current']['temp']
weather_description = weather_data['current']['weather'][]['description']
print(f"当前温度：{current_temp}°C，天气状况：{weather_description}")

@Service
public class WeatherService {
    private final RestTemplate restTemplate;
    private final String apiKey = "你的API密钥";

    public WeatherService(RestTemplate restTemplate) {
        this.restTemplate = restTemplate;
    }

    public WeatherResponse getWeather(String city) {
        String url = "http://api.openweathermap.org/data/2.5/weather";
        return restTemplate.getForObject(
                url,
                WeatherResponse.class,
                new ParameterizedTypeReference<>() {},
                city,
                apiKey
        );
    }
}

npm install request

const request = require('request');

function getWeather(city, apiKey, callback) {
    const url = `http://api.openweathermap.org/data/2.5/weather?q=${city}&appid=${apiKey}&units=metric`;
    request(url, (error, response, body) => {
        if (error) {
            callback('无法连接到天气服务', null);
            return;
        }
        const data = JSON.parse(body);
        if (data.cod !== ) {
            callback(`天气查询失败：${data.message}`, null);
            return;
        }
        const weather = {
            temperature: data.main.temp,
            description: data.weather[].description
        };
        callback(null, weather);
    });
}

// 调用示例
getWeather('北京', '你的API密钥', (error, weather) => {
    if (error) {
        console.error(error);
    } else {
        console.log(`北京的天气：${weather.description}，温度：${weather.temperature}°C`);
    }
});

<uses-permission android:name="android.permission.INTERNET" />

private class WeatherTask extends AsyncTask<String, Void, Weather> {
    @Override
    protected Weather doInBackground(String... params) {
        String city = params[];
        String apiKey = "你的API密钥";
        String url = "http://api.openweathermap.org/data/2.5/weather?q=" + city + "&appid=" + apiKey + "&units=metric";
        try {
            URL weatherUrl = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) weatherUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();

            int responseCode = connection.getResponseCode();
            if (responseCode == ) {
                BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String line;
                StringBuilder response = new StringBuilder();
                while ((line = reader.readLine()) != null) {
                    response.append(line);
                }
                reader.close();

                JSONObject jsonObject = new JSONObject(response.toString());
                return parseWeatherJson(jsonObject);
            }
        } catch (IOException | JSONException e) {
            e.printStackTrace();
        }
        return null;
    }

    private Weather parseWeatherJson(JSONObject jsonObject) throws JSONException {
        Weather weather = new Weather();
        JSONObject main = jsonObject.getJSONObject("main");
        weather.temp = main.getDouble("temp");
        JSONArray weatherArray = jsonObject.getJSONArray("weather");
        weather.description = weatherArray.getJSONObject().getString("description");
        return weather;
    }

    @Override
    protected void onPostExecute(Weather weather) {
        if (weather != null) {
            tvWeatherInfo.setText("天气现象: " + weather.description + ", 温度: " + weather.temp + "°C");
        } else {
            tvWeatherInfo.setText("无法获取天气信息");
        }
    }
}

import time
from functools import lru_cache

@lru_cache(maxsize=)
def get_weather_with_cache(lat, lon, api_key):
    # 这里写获取天气数据的逻辑
    pass

OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
        .url(url)
        .addHeader("Accept-Encoding", "gzip")
        .build();

import os

api_key = os.environ.get('WEATHER_API_KEY')