天气预报空气质量查询系统，Java swing 窗体，完整源码下载直接运行

女爷i 2024-03-27 13:20 100阅读 0赞

今天为大家分享一个java语言编写的天气预报 空气质量查询系统，目前系统功能已经很全面，后续会进一步完善。整个系统界面漂亮，有完整得源码，希望大家可以喜欢。喜欢的帮忙点赞和关注。一起编程、一起进步

## 开发环境 ##

开发语言为Java，开发环境Eclipse或者IDEA都可以。数据库采用：MySQL。运行主程序，或者执行打开JAR文件即可以运行本程序。

## 系统框架 ##

利用JDK自带的SWING框架开发，不需要安装第三方JAR包

## 主要功能 ##

1 注册API，从风和天气[https://www.qweather.com/][https_www.qweather.com]实时返回天气等数据

2 解析返回数据：对返回的JSON数据进行解析

3 Java UI对天气数据进行显示。显示最近8小时天气信息

4 用户可以根据省、市、县等 根据条件查询天气信息，查询后的天气，马上更新在主面板上

## 实现效果 ##

### 1 主界面 ###

程序主要一个主界面，可以采取下钻的方式显示一周的天气。先选省份、然后选城市、再选取对应的区域。然后点击查询。实时获取4小时内的天气情况。天气分半个小时显示一次。显示的天气信息包含以下些信息：时间、温度、天气类型、风力、降雨情况。所有数据都是实时抓取的，获取的数据源从[https://www.qweather.com/][https_www.qweather.com]获取。

![5d79ff393f4c144cf7cd7b9188284c02.jpeg][]

### 2 代码界面 ###

把代码从Eclipse导入后，运行Main.Java文件，出现主界面。也可以打包成JAR文件，独立运行整个程序。

![7c67d67e80c69a358fde8aba9d19e778.png][]

## 主要代码 ##

package com.weather.util;
    
    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.io.UnsupportedEncodingException;
    import java.net.URL;
    import java.net.URLConnection;
    import java.net.URLEncoder;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    import com.weather.model.*;
    
    import net.sf.json.JSONArray;
    import net.sf.json.JSONObject;
    
    public class WeatherUtil {
        
        //用户key
        private static final String key = "********";
        //实时天气预报查询地址
        private static final String NOW_WEATHER_URL = "https://free-api.heweather.com/s6/weather/now?";
        //逐小时天气查询地址
        private static final String HOURLY_WEATHER_URL = "https://free-api.heweather.com/s6/weather/hourly?";
        //三天天气预报
        private static final String DAILY_WEATHER_URL = "https://free-api.heweather.com/s6/weather/forecast?";
        //生活指数查询地址
        private static final String LIFE_STYLE_URL = "https://free-api.heweather.com/s6/weather/lifestyle?";
        
        //返回json字符串数据
        public static String getJsonStr(String url){
            System.out.println("psost url:"+url);
            String jsonStr = "";
            try{
            URL realUrl = new URL(url);
            URLConnection connection = realUrl.openConnection();
            connection.connect();
            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(),"utf-8"));
            
            String line;
            while((line = reader.readLine()) != null){
                jsonStr += line;
            }
            System.out.println("return result:"+jsonStr);
            reader.close();
            }catch (Exception e) {  
                System.out.println("发送GET请求出现异常！" + e);  
                //e.printStackTrace();  
                System.out.println("发送GET请求出现异常！请检查网络！");
                return "error";
            }  
            return jsonStr;
        }
        
        //查询实时天气，返回Now_Weather对象
        public static Now_Weather getNowWeather(String location) {
            Now_Weather now_Weather = null;
            StringBuilder parameters = new StringBuilder();
            try {
                parameters.append("location="+URLEncoder.encode(location, "UTF-8").toString()+"&key="+key);
            } catch (UnsupportedEncodingException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            
            String jsonStr = getJsonStr(NOW_WEATHER_URL+parameters);
            
            String regex = "\\{\"cloud\":.*?\\}";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(jsonStr);
            
            String resultStr = null;
            while(matcher.find()) {
                resultStr = matcher.group(0);
            }
            //System.out.println(resultStr);
            //json字符串转换成now_Weather对象
            if(resultStr != null) {
                JSONObject jsonObject = JSONObject.fromObject(resultStr);
                now_Weather = (Now_Weather)JSONObject.toBean(jsonObject, Now_Weather.class);
            }
            
            //设置LocationAndUpdateTime
            now_Weather.setLocationAndUpdateTime(getLocationAndUpdateTime(jsonStr));
            
            jsonStr = getJsonStr(LIFE_STYLE_URL+parameters);
            regex = "\"txt\":\"(.*?)\"";
            pattern = Pattern.compile(regex);
            matcher = pattern.matcher(jsonStr);
            while(matcher.find()) {
                now_Weather.setSuggestion(matcher.group(1));    
                break;    //只取今天的生活指数建议
            }
            return now_Weather;
        }
        
        //逐小时天气预报，返回List<Hourly_Weather>
        public static List<Hourly_Weather> getHourlyWeathers(String location){
            
            
            List<Hourly_Weather> hourly_Weathers = new ArrayList<>();
            StringBuilder parameters = new StringBuilder();
            try {
                parameters.append("location="+URLEncoder.encode(location, "UTF-8").toString()+"&key="+key);
            } catch (UnsupportedEncodingException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            String jsonStr = getJsonStr( HOURLY_WEATHER_URL + parameters);
            System.out.println("hour return:"+HOURLY_WEATHER_URL + parameters);
            String regex = "\\[\\{\"cloud.*?\\]";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(jsonStr);
            
            String resultStr = null;
            while(matcher.find()) {
                resultStr = matcher.group(0);
            }
            
            if(resultStr != null) {
                //System.out.println(resultStr);
                JSONArray jsonArray = JSONArray.fromObject(resultStr);
                //json字符串转换成对象数组
                for(int i = 0; i < jsonArray.size(); i++) {
                    JSONObject jObject = jsonArray.getJSONObject(i);
                    Hourly_Weather hourly_Weather = (Hourly_Weather) JSONObject.toBean(jObject,Hourly_Weather.class);
                    hourly_Weather.setLocationAndUpdateTime(getLocationAndUpdateTime(jsonStr));
                    hourly_Weathers.add(hourly_Weather);
                }
            }
            return hourly_Weathers;
        }
        
        //查询三天天气预报，返回对象数组
        public static List<Daily_Weather> getDailyWeathers(String location) {
            List<Daily_Weather> daily_Weathers = new ArrayList<>();
            
            StringBuilder parameters = new StringBuilder();
            try {
                parameters.append("location="+URLEncoder.encode(location, "UTF-8").toString()+"&key="+key);
            } catch (UnsupportedEncodingException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            
            String jsonStr = getJsonStr(DAILY_WEATHER_URL + parameters);
            String regex = "\\[\\{\"cond_code_d.*?\\]";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(jsonStr);
            
            String resultStr = "";
            while(matcher.find()) {
                resultStr = matcher.group(0);
            }
            //System.out.println(resultStr3);
            //json字符串转换成对象数组
            if(resultStr != null) {
                JSONArray jsonArray = JSONArray.fromObject(resultStr);
                for(int i = 0; i < jsonArray.size(); i++) {
                    JSONObject jObject = jsonArray.getJSONObject(i);
                    Daily_Weather daily_Weather = (Daily_Weather)JSONObject.toBean(jObject,Daily_Weather.class);
                    daily_Weather.setLocationAndUpdateTime(getLocationAndUpdateTime(jsonStr));
                    daily_Weathers.add(daily_Weather);
                }
            }
            return daily_Weathers;
        }
        
        public static LocationAndUpdateTime getLocationAndUpdateTime(String jsonStr) {
            System.out.println("json"+jsonStr);
            
            LocationAndUpdateTime locationAndUpdateTime = null;
            //匹配城市信息
            String regex = "\\{\"cid\".*?\\}";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(jsonStr);
            
            String resultStr = "";
            while(matcher.find()) {
                resultStr = matcher.group(0);
            }
            
            if(resultStr.equals("")) {
                return null;
            }
            
            //将最后一个大括号替换为逗号,拼接上匹配的时间，成为完整json字符串
            resultStr = resultStr.substring(0, resultStr.length()-1)+",";
            
            //匹配更新时间
            regex = "\"loc\".*?\\}";
            pattern = Pattern.compile(regex);
            matcher = pattern.matcher(jsonStr);
            while(matcher.find()) {
                resultStr += matcher.group(0);
            }
            
            JSONObject jsonObject = JSONObject.fromObject(resultStr);
            locationAndUpdateTime = (LocationAndUpdateTime)JSONObject.toBean(jsonObject, LocationAndUpdateTime.class);
            return locationAndUpdateTime;
        }
    }

[https_www.qweather.com]: https://www.qweather.com/
[5d79ff393f4c144cf7cd7b9188284c02.jpeg]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/d23f5ff18711489c8ff5302fa29de0e0.png
[7c67d67e80c69a358fde8aba9d19e778.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/927c1233a614426d857d31c9d24ea414.png