Java实现调用第三方天气预报实时API接口并解析数据的完整源码示例

package com.hidata.devops.paas; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.*; import java.util.Map; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.zip.GZIPInputStream; /** * @Author: CaoTing * @Description: 通过get请求向中华万年历网站http://wthrcdn.etouch.cn/weather_mini获取某个城市的天气状况数据，数据格式是Json * @Date: 2019/7/4 */ public class WeatherUtils { /** * 通过城市名称获取该城市的天气信息 * * @param cityName * @return */ public static String getWeatherData(String cityName) { StringBuilder sb=new StringBuilder();; try { cityName = URLEncoder.encode(cityName, "UTF-8"); String weatherRrl = "http://wthrcdn.etouch.cn/weather_mini?city="+cityName; // String weatherRrl = "https://free-api.heweather.net/s6/weather/now?location="+cityName+"&key=db86a5196f304e52a4369818c5182e60"; URL url = new URL(weatherRrl); URLConnection conn = url.openConnection(); InputStream is = conn.getInputStream(); GZIPInputStream gzin = new GZIPInputStream(is); // 设置读取流的编码格式，自定义编码 InputStreamReader isr = new InputStreamReader(gzin, "utf-8"); BufferedReader reader = new BufferedReader(isr); String line = null; while((line=reader.readLine())!=null) { sb.append(line).append(" "); } reader.close(); } catch (IOException e) { e.printStackTrace(); } return sb.toString(); } /** * 将JSON格式数据进行解析 ，返回一个weather对象 * @param weatherInfoByJson * @return */ public static WeatherInfo getWeather(String weatherInfoByJson){ WeatherInfo wea = new WeatherInfo(); JSONObject jsonObject = JSONObject.parseObject(weatherInfoByJson); JSONObject dataJsonObj = jsonObject.getJSONObject("data"); wea.setCity(dataJsonObj.getString("city")); String ganmao = dataJsonObj.getString("ganmao"); wea.setGanMao(dataJsonObj.getString("ganmao")); String wendu = dataJsonObj.getString("wendu"); wea.setWendu(wendu+"℃"); JSONArray jsonArray = dataJsonObj.getJSONArray("forecast"); Map<String,String> map = (Map<String, String>) jsonArray.get(0); wea.setCurrentDate(map.get("date")); wea.setHigh(map.get("high")); wea.setFengli(getFengli(map.get("fengli"))); wea.setLow(map.get("low")); wea.setFengxiang(map.get("fengxiang")); wea.setType(map.get("type")); return wea; } public static String getFengli(String s){ Pattern p = Pattern.compile("\\<\\!\\[CDATA\\[(?<text>[^\\]]*)\\]\\]\\>"); Matcher m = p.matcher(s); if(m.matches()) { return m.group(1); } return ""; } }