Interface retrieval is completed in two steps
Step 1: Introduce the JAR package
- Online jars
- If online JAR package is invalid, private message me.
Step 2: Create the class implementation
- Create a JAVA class in a JAVA project (mine: WeatherUtil)
- Change the cityID in the class to the region ID you need to display. Mine is Shanghai.
WeatherUtil class code:
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sf.json.JSONObject;
/** * Java call central weather bureau weather forecast interface **@author Administrator
*
*/
public class WeatherUtil {
/** * get the weather <br> * method name: getWeekWeatherMap <br> *@paramCityid Cityid */
public static List<Map<String, Object>> getWeekWeatherMap(String Cityid)
throws IOException, NullPointerException {
// API connected to the Central Meteorological Observatory
URL url = new URL("http://m.weather.com.cn/data/" + Cityid + ".html");
URLConnection connectionData = url.openConnection();
connectionData.setConnectTimeout(1000);
// Get weather conditions for 1 to 6 days
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
try {
BufferedReader br = new BufferedReader(new InputStreamReader(
connectionData.getInputStream(), "UTF-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while((line = br.readLine()) ! =null)
sb.append(line);
String datas = sb.toString();
System.out.println(datas);
JSONObject jsonData = JSONObject.fromObject(datas);
JSONObject info = jsonData.getJSONObject("weatherinfo");
for (int i = 1; i <= 6; i++) {
// Get the date for the next 6 days
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DAY_OF_YEAR, i - 1);
Date date = cal.getTime();
SimpleDateFormat sf = new SimpleDateFormat("Yyyy year MM month DD day");
Map<String, Object> map = new HashMap<String, Object>();
map.put("city", info.getString("city").toString());/ / the city
map.put("date_y", sf.format(date));/ / date
map.put("week", getWeek(cal.get(Calendar.DAY_OF_WEEK)));/ / week
map.put("fchh", info.getString("fchh").toString());// Release time
map.put("weather", info.getString("weather" + i).toString());/ / the weather
map.put("temp", info.getString("temp" + i).toString());/ / temperature
map.put("wind", info.getString("wind" + i).toString());/ / the wind
map.put("fl", info.getString("fl" + i).toString());/ / the wind speed
// map.put("index", info.getString("index").toString()); //
// Today's dressing index
// map.put("index_uv", info.getString("index_uv").toString()); //
// Uv index
// map.put("index_tr", info.getString("index_tr").toString()); //
// Tourism index
// map.put("index_co", info.getString("index_co").toString()); //
// Comfort index
// map.put("index_cl", info.getString("index_cl").toString()); //
// Morning exercise index
// map.put("index_xc", info.getString("index_xc").toString()); //
// Car Wash index
// map.put("index_d", info.getString("index_d").toString()); //
// Weather detail dressing indexlist.add(map); }}catch (SocketTimeoutException e) {
System.out.println("Connection timed out");
} catch (FileNotFoundException e) {
System.out.println("Error loading file");
}
return list;
}
/** ** get real-time weather 1<br> * getTodayWeather <br> **@paramCityid * City code */
public static Map<String, Object> getTodayWeather1(String Cityid)
throws IOException, NullPointerException {
// API connected to the Central Meteorological Observatory
URL url = new URL("http://www.weather.com.cn/data/sk/" + Cityid
+ ".html");
URLConnection connectionData = url.openConnection();
connectionData.setConnectTimeout(1000);
Map<String, Object> map = new HashMap<String, Object>();
try {
BufferedReader br = new BufferedReader(new InputStreamReader(
connectionData.getInputStream(), "UTF-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while((line = br.readLine()) ! =null)
sb.append(line);
String datas = sb.toString();
System.out.println(datas);
JSONObject jsonData = JSONObject.fromObject(datas);
JSONObject info = jsonData.getJSONObject("weatherinfo");
map.put("city", info.getString("city").toString());/ / the city
map.put("temp", info.getString("temp").toString());/ / temperature
map.put("WD", info.getString("WD").toString());/ / the wind
map.put("WS", info.getString("WS").toString());/ / the wind speed
map.put("SD", info.getString("SD").toString());/ / humidity
map.put("time", info.getString("time").toString());// Release time
} catch (SocketTimeoutException e) {
System.out.println("Connection timed out");
} catch (FileNotFoundException e) {
System.out.println("Error loading file");
}
return map;
}
/** ** get real-time weather 2<br> * getTodayWeather <br> **@paramCityid * City code */
public static Map<String, Object> getTodayWeather2(String Cityid)
throws IOException, NullPointerException {
// API connected to the Central Meteorological Observatory
URL url = new URL("http://www.weather.com.cn/data/cityinfo/" + Cityid
+ ".html");
URLConnection connectionData = url.openConnection();
connectionData.setConnectTimeout(1000);
Map<String, Object> map = new HashMap<String, Object>();
try {
BufferedReader br = new BufferedReader(new InputStreamReader(
connectionData.getInputStream(), "UTF-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while((line = br.readLine()) ! =null)
sb.append(line);
String datas = sb.toString();
System.out.println(datas);
JSONObject jsonData = JSONObject.fromObject(datas);
JSONObject info = jsonData.getJSONObject("weatherinfo");
map.put("city", info.getString("city").toString());/ / the city
map.put("temp1", info.getString("temp1").toString());// Maximum temperature
map.put("temp2", info.getString("temp2").toString());// Minimum temperature
map.put("weather", info.getString("weather").toString());/ / the weather
map.put("ptime", info.getString("ptime").toString());// Release time
} catch (SocketTimeoutException e) {
System.out.println("Connection timed out");
} catch (FileNotFoundException e) {
System.out.println("Error loading file");
}
return map;
}
private static String getWeek(int iw) {
String weekStr = "";
switch (iw) {
case 1:
weekStr = "Sunday";
break;
case 2:
weekStr = "Monday";
break;
case 3:
weekStr = "Tuesday";
break;
case 4:
weekStr = "Wednesday";
break;
case 5:
weekStr = "Thursday";
break;
case 6:
weekStr = "Friday";
break;
case 7:
weekStr = "Saturday";
break;
default:
break;
}
return weekStr;
}
public static void main(String[] args) {
try {
// Test to get real-time weather 1(including wind condition, humidity)
Map<String, Object> map = getTodayWeather1("101020100");
System.out.println(map.get("city") + "\t" + map.get("temp")
+ "\t" + map.get("WD") + "\t" + map.get("WS")
+ "\t" + map.get("SD") + "\t" + map.get("time"));
// Test to get real-time weather 2(including weather, temperature range)
Map<String, Object> map2 = getTodayWeather2("101010100");
System.out.println(map2.get("city") + "\t" + map2.get("temp1")
+ "\t" + map2.get("temp2") + "\t" + map2.get("weather")
+ "\t" + map2.get("ptime"));
// Test to get a week's weather
List<Map<String, Object>> listData = getWeekWeatherMap("101010100");
for (int j = 0; j < listData.size(); j++) {
Map<String, Object> wMap = listData.get(j);
System.out.println(wMap.get("city") + "\t" + wMap.get("date_y")
+ "\t" + wMap.get("week") + "\t" + wMap.get("weather")
+ "\t" + wMap.get("temp") + "\t" + wMap.get("wind")
+ "\t" + wMap.get("fl")); }}catch(Exception e) { e.printStackTrace(); }}}Copy the code