java获取实时天气数据---免费

package com.sport.trailwalkappletserver.common.utils;
import com.alibaba.fastjson.JSONArray;
import net.sf.json.JSONObject;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.time.LocalDate;
import java.util.Map;

/**
 * @Description:
 * @Author: zdj
 * @Date: 2021/05/24
 * @version: 1.0.0
 */
public class WeatherUtil {
    public static void main(String[] args) throws IOException {
        System.out.println(getTodayWeather("杭州市"));
    }

    public static Map<String, Object> getTodayWeather(String cityName){
        try {
            HttpClient client = new DefaultHttpClient();
            //发送get请求
            HttpGet request = new HttpGet("http://portalweather.comsys.net.cn/weather03/api/weatherService/getDailyWeather?cityName="+cityName);
            HttpResponse response = client.execute(request);
            /**请求发送成功，并得到响应**/
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                /**读取服务器返回过来的json字符串数据**/
                String strResult = EntityUtils.toString(response.getEntity());

                // 处理数据，封装为map形式返回
                JSONObject resJson = JSONObject.fromObject(strResult);
                String results = resJson.get("results").toString();
                JSONArray resArray = (JSONArray)JSONArray.parse(results);
                JSONObject jsob = JSONObject.fromObject(resArray.get(0).toString());
                JSONArray zrray = (JSONArray)JSONArray.parse(jsob.get("daily").toString());
                Map<String, Object> map = (Map<String, Object>)zrray.get(0);
                int value = LocalDate.now().getDayOfWeek().getValue(); //周几
                map.put("taday_week", getWeekByIntValue(value));
                return map;
            }
        }
        catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String getWeekByIntValue(int value){
        String taday = "星期";
        if(value == 1){
            taday = taday + "一";
        } else if(value == 2){
            taday = taday + "二";
        }else if(value == 3){
            taday = taday + "三";
        }else if(value == 4){
            taday = taday + "四";
        }else if(value == 5){
            taday = taday + "五";
        }else if(value == 6){
            taday = taday + "六";
        }else if(value == 7){
            taday = taday + "天";
        }
        return taday;
    }
}

strResult  里面包含了未来天气的预测，请根据实际情况获取，