Java 输出为乱码的解决方案之一

最近在学习Java的过程中，写了一个查询天气的小程序，发现输出为乱码，尝试了几种方法，发现一个奇怪又简单的方法解决了这个问题，只需要编码一个字段即可，其它字段自动重新编码，理论上讲Windows使用GBK编码方式，但是我尝试GBK编码却失败了，Idea默认为UTF-8，再次尝试使用Standard UTF-8，居然成功了，奇葩就在这里，一时无法理解，分享给大家。

 

 修改编码方式后：

 

 

 

public static void query(String id) throws Exception {
    try {
        URL url = new URL("https://restapi.amap.com/v3/weather/weatherInfo?city=" + id + "&key=23879d193adefa8671ee71ea8124915c");
        System.out.println("Author: 张莽 (Zhang Mang) @10.10.2022, Homepage: www.pavogroup.top");
        System.out.println("I will get data from: " + url);
        InputStream is = url.openConnection().getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
        String line = br.readLine();
      //  System.out.println("Return Data: " + line);
        JSONObject object = JSONObject.fromObject(line);
        JSONArray array = object.getJSONArray("lives");
        object = array.getJSONObject(0);
        String city = object.getString("city");
        String province = object.getString("province");

        String weather = object.getString("weather");
        String windpower = object.getString("windpower");
        String humidity = object.getString("humidity");
        String reporttime = object.getString("reporttime");
        String winddirection = object.getString("winddirection");
        String temperature = object.getString("temperature");
        System.out.println("（今天的天气：）Today Weather: ====================================================   ");
        byte[] b = province.getBytes(StandardCharsets.UTF_8);// 编码
        String provinceG = new String(b, StandardCharsets.UTF_8);
        System.out.println("Province: " + provinceG);
        System.out.println("City: " + city);
        System.out.println("Weather: " + weather);
        System.out.println("WindPower: " + windpower);
        System.out.println("Humidity: " + humidity);
        System.out.println("WindDirection: " + winddirection);
        System.out.println("Temperature: " + temperature);
        System.out.println("ReportTime: " + reporttime);
        System.out.println("====================================================   ");
    } catch (Exception e) {
        System.out.println("JSONException Error: " + e.getMessage());
       // System.exit(1);

    }
}

public static void queryCasts(String id) throws Exception {
    for (int i = 0; i < 4; i++) {
        try {
            URL url = new URL("https://restapi.amap.com/v3/weather/weatherInfo?city=" + id + "&key=23879d193adefa8671ee71ea8124915c&extensions=all");
            InputStream is = url.openStream();
            BufferedReader br = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
            String line = br.readLine();
          //  System.out.println("Return Data: " + line);
            JSONObject object = JSONObject.fromObject(line);
            JSONArray array = object.getJSONArray("forecasts");
            object = array.getJSONObject(0);
            JSONArray array1 = object.getJSONArray("casts");
            object = array1.getJSONObject(i);
            String date = object.getString("date");
            String week = object.getString("week");
            String dayweather = object.getString("dayweather");
            String nightweather = object.getString("nightweather");
            String daytemp = object.getString("daytemp");
            String nighttemp = object.getString("nighttemp");
            String daywind = object.getString("daywind");
            String nightwind = object.getString("nightwind");
            String daypower = object.getString("daypower");
            String nightpower = object.getString("nightpower");
            System.out.println("Forcast weather: ***********************************************   ");

            System.out.println("date: " + date);
            System.out.println("week: " + week);
            byte[] b = dayweather.getBytes(StandardCharsets.UTF_8);// 编码
            String dayweatherG = new String(b, StandardCharsets.UTF_8); //解码
            System.out.println("(天气：)daywather: " + dayweatherG);
            System.out.println("nightweather: " + nightweather);
            System.out.println("daytemp: " + daytemp);
            System.out.println("nighttemp: " + nighttemp);
            System.out.println("daywind: " + daywind);
            System.out.println("nightwind: " + nightwind);
            System.out.println("daypower: " + daypower);
            System.out.println("nightpower: " + nightpower);
            System.out.println(" ***************************************************************");

        } catch (Exception e) {
            System.out.println("JSONException Error: " + e.getMessage());
           // System.exit(2);
        }
    }
}