Spring - can't save an entity with CRUD Repository - mysql

Question

I am making simple program that have to get some info from OpenWeatherMap API and save it in MySQL database:
package com.example.restTemplate;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
#SpringBootApplication
public class RestTemplateApplication {
public static void main(String[] args) {
SpringApplication.run(RestTemplateApplication.class, args);
}
#Bean
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
package com.example.restTemplate.Model;
import lombok.*;
import javax.persistence.Entity;
import javax.persistence.Id;
#NoArgsConstructor
#AllArgsConstructor
#Entity
#javax.persistence.Table(name="Weather")
#Getter
#Setter
#ToString
public class WeatherScore {
#Id
private int id;
private String city;
private double temperature;
private int pressure;
private long currentDate;
}
package com.example.restTemplate.Controller;
import com.example.restTemplate.Model.WeatherScore;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
#Repository
public interface WeatherCRUDRepository
extends CrudRepository<WeatherScore, Long> {
WeatherScore save (WeatherScore score);
}
package com.example.restTemplate.Controller;
import com.example.restTemplate.Model.WeatherScore;
import org.springframework.context.ApplicationContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import java.util.Arrays;
import java.util.Random;
#RestController
public class ConsumeWebService {
#Autowired
RestTemplate restTemplate;
WeatherCRUDRepository repository;
ApplicationContext context;
#RequestMapping(value = "/weather")
public void printWeather() {
HttpHeaders headers = new HttpHeaders();
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
HttpEntity<String> entity = new HttpEntity<String>(headers);
String text = restTemplate.exchange("http://api.openweathermap.org/data/2.5/weather?q=London,uk&APPID=mykey",
HttpMethod.GET, entity, String.class).getBody();
int pressureStartIndex = text.indexOf("pressure")+10;
int pressureEndIndex = text.indexOf(",", pressureStartIndex);
int tempStartIndex = text.indexOf("temp")+6;
int tempEndIndex = text.indexOf(",", tempStartIndex);
int pressure = Integer.parseInt(text.substring(pressureStartIndex, pressureEndIndex));
double temperature = Double.parseDouble(text.substring(tempStartIndex, tempEndIndex));
WeatherScore score = new WeatherScore();
score.setCity("London");
score.setPressure(pressure);
score.setTemperature(temperature);
Random generator = new Random();
score.setId(generator.nextInt(1000));
score.setCurrentDate(System.currentTimeMillis());
WeatherCRUDRepository repo = context.getBean(WeatherCRUDRepository.class);
repository.save(score);
}
}
When i tap http://localhost:8080/weather i get an error:
Cannot invoke
"org.springframework.context.ApplicationContext.getBean(java.lang.Class)"
because "this.context" is null
Blockquote
How i could fix that?

Answer 1

You have to autowire all the beans within controller, like so:
#Autowired
RestTemplate restTemplate;
#Autowired
WeatherCRUDRepository repository;
#Autowired
ApplicationContext context;