基于和风天气API获取七天天气状况的示例代码 使用java语言

好的，这里是一个基于和风天气API获取七天天气状况的示例代码（使用Java语言）：

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Scanner;
import org.json.JSONArray;
import org.json.JSONObject;

public class WeatherForecast {

    public static void main(String[] args) {
        String api_key = "your_api_key";
        String location = "北京";
        String urlStr = "https://free-api.heweather.net/s6/weather/forecast?location="
                + location + "&key=" + api_key;
        try {
            URL url = new URL(urlStr);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.connect();

            int responseCode = conn.getResponseCode();
            if (responseCode != 200) {
                throw new RuntimeException("HTTP response code: " + responseCode);
            } else {
                Scanner sc = new Scanner(conn.getInputStream());
                String jsonString = "";
                while (sc.hasNext()) {
                    jsonString += sc.nextLine();
                }
                sc.close();
                JSONObject json = new JSONObject(jsonString);
                JSONArray forecastArr = json.getJSONArray("HeWeather6")
                        .getJSONObject(0).getJSONArray("daily_forecast");
                for (int i = 0; i < forecastArr.length(); i++) {
                    JSONObject forecast = forecastArr.getJSONObject(i);
                    String date = forecast.getString("date");
                    String cond_txt_d = forecast.getString("cond_txt_d");
                    String cond_txt_n = forecast.getString("cond_txt_n");
                    String tmp_max = forecast.getString("tmp_max");
                    String tmp_min = forecast.getString("tmp_min");
                    System.out.println(date + " 白天" + cond_txt_d + " 夜间" + cond_txt_n
                            + "，最高温度 " + tmp_max + "℃，最低温度 " + tmp_min + "℃");
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

在上述代码中，需要将`your_api_key`替换为您自己的和风天气API的密钥。并且`location`参数可以修改为您所在城市的名称或者城市ID，以获取对应城市的天气数据。

执行上述代码将会输出七天的天气状况信息，包括日期、白天天气、夜间天气、最高温度和最低温度。