Raghav Gade

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
import java.util.Optional;
import org.json.JSONArray;
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

//WeatherController.java
public static void main(String[] args) {
                  SpringApplication.run(WeatherController.class, args);
		  key=System.getenv("WEB_APPID");
		  if (key == null){
			  System.out.print("\nPlease set an environment variable as instructed in the README.md file\n");
			  System.exit(1);
                  }
	}

//WeatherController.java

	@GetMapping("/weather/current")
	@CrossOrigin(origins="http://localhost:3000")
        public Weather current(@RequestParam(value="location" )String location) {
                try {

                        String url = "http://api.openweathermap.org/data/2.5/weather?q="+location+"&appid="+key; 
                        URL obj = new URL(url);

                        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

                        BufferedReader in = new BufferedReader(
                                        new InputStreamReader(con.getInputStream()));
                        String inputLine;
                        StringBuffer response = new StringBuffer();
                        while ((inputLine = in.readLine()) != null) {
                                response.append(inputLine);
                        }
                        

                        in.close();
                        content = response.toString();

                } 
                catch (Exception e) {
                        System.out.print("ERROR : "+e);
                        return new Weather("Not Found","Not Found","Not Found","Not Found",0);
                }
                        JSONObject root = new JSONObject(content);
                        //coordinates
                        //temperature-humidity-pressure
                        JSONObject main = root.getJSONObject("main");
                        //system
                        JSONObject sys = root.getJSONObject("sys");
                        //weather
                        JSONArray wea = root.getJSONArray("weather");
                        JSONObject weas = wea.getJSONObject(0);
                        
                        return new Weather(
                                        weas.getString("main"),
                                        weas.getString("description"),
                                        sys.getString("country"),
                                        root.getString("name"),
                                        main.getInt("temp")
                                        );
                }

//Weather.java
package com.example.restservice;

public class Weather{
	private String main;
	private String description;
	private float temp;
	private String country;
	private String city;


	public Weather( String main,String description,String country, String city,float temp){
		this.main=main;
		this.description=description;
		this.country=country;
		this.city=city;
		this.temp=temp;
	}


	public String getMain() {
				return main;
	}

	public String getDescription() {
				return description;
	}

	public String getCountry() {
                return country;
        }

        public  String getCity() {
                return city;
        }
	public float getTemp() {
		return temp;
	}
	 

}

//WeatherController.java
        @RestController
        class MyErrorController implements ErrorController  {
    
                @GetMapping("/error")
                public String handleError() {
        
                        //do something like logging
                        return String.format("Something is wrong because all t @RestControllerhe known error related issues have been resolved. In case you see this output please raise an issue in GitHub with all the details.\n Thank you \n-RaghavGade");
                }

                @Override
                public String getErrorPath() {
                        return String.format("/error");
                    }
        }