Attached:SpringBoot calls the weather forecast api interface to get weather data (2)

Project structure:

Get weather data by city name:

Http://wthrcdn.etouch.cn/weather_mini?city=Beijing

Get weather data by city id (you can search for the city's id in Baidu)

http://wthrcdn.etouch.cn/weather_mini?citykey=101010100

1. Import the relevant jar package through Gradle:

ps:

Recommend two central warehouses that I use:

http://mvnrepository.com

2. Here I use the Google Chrome plugin PostMan,

Create an entity class based on the data parameters returned to us.

3. Create an entity class.

1）Weather：

package com.lucifer.demo.pojo;

import java.io.Serializable;
import java.util.List;

/**
 * @author: Lucifer
 * @create: 2018-09-23 23:00
   * @description: Weather information
 **/
public class Weather implements Serializable {

/*
                           Http://wthrcdn.etouch.cn/weather_mini?city=Beijing
 {
        "data":{
        "yesterday":{
            "date": "Saturday on the 22nd", "high": "High temperature 24 °C", "fx": "Northwest wind", "low": "Low temperature 13 °C", "fl": "<![CDATA[3 -4 level]]>", "type": "clear"
                 },"city":"Beijing", "aqi":"35", "forecast":[{
                         "date": "Sunday on the 23rd", "high": "High temperature 24 °C", "fengli": "<![CDATA[4-5]]>", "low": "Low temperature 12 °C", " Fengxiang":"North wind", "type":              "clear"
        },{
                         "date": "Monday of 24th", "high": "High temperature 23°C", "fengli": "<![CDATA[<3]]>", "low": "Low temperature 11°C", " Fengxiang": "no sustained wind direction", "type":
            " "
        },{
                         "date": "25th Tuesday", "high": "high temperature 23°C", "fengli": "<![CDATA[<3]]>", "low": "low temperature 13°C", "fengxiang ":"Southwind", "type": "Cloudy"
        },{
                         "date": "Wednesday 26th", "high": "High temperature 22°C", "fengli": "<![CDATA[<3]]>", "low": "Low temperature 14°C", "fengxiang ":"Southwind", "type": "Cloudy"
        },{
                         "date": "Thursday 27th", "high": "High temperature 22°C", "fengli": "<![CDATA[3-4]]>", "low": "Low temperature 14°C", " Fengxiang":"South wind", "type": " "
                 }],"ganmao": "Every weather conditions are appropriate, there is no obvious cooling process, and the chance of cold is low.", "wendu": "14"
    },"status":1000, "desc":"OK"
    }*/

    private String city;
    private Yesterday yesterday;
    private String aqi;
    private String ganmao;
    private String wendu;
    private List<Forecast> forecast;

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public Yesterday getYesterday() {
        return yesterday;
    }

    public void setYesterday(Yesterday yesterday) {
        this.yesterday = yesterday;
    }

    public String getAqi() {
        return aqi;
    }

    public void setAqi(String aqi) {
        this.aqi = aqi;
    }

    public String getGanmao() {
        return ganmao;
    }

    public void setGanmao(String ganmao) {
        this.ganmao = ganmao;
    }

    public String getWendu() {
        return wendu;
    }

    public void setWendu(String wendu) {
        this.wendu = wendu;
    }

    public List<Forecast> getForecast() {
        return forecast;
    }

    public void setForecast(List<Forecast> forecast) {
        this.forecast = forecast;
    }
}

2）Yesterday：

package com.lucifer.demo.pojo;

import java.io.Serializable;

/**
   * Yesterday's weather
 *
 * @author: Lucifer
 * @create: 2018-09-23 23:10
 * @description:
 **/
public class Yesterday implements Serializable {
   /* "yesterday":{
                 "date": "Saturday on the 22nd", "high": "High temperature 24 °C", "fx": "Northwest wind", "low": "Low temperature 13 °C", "fl": "<![CDATA[3 -4 level]]>", "type": "clear"
    },*/

    private String date;
    private String high;
    private String fx;
    private String low;
    private String fl;
    private String type;

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getHigh() {
        return high;
    }

    public void setHigh(String high) {
        this.high = high;
    }

    public String getFx() {
        return fx;
    }

    public void setFx(String fx) {
        this.fx = fx;
    }

    public String getLow() {
        return low;
    }

    public void setLow(String low) {
        this.low = low;
    }

    public String getFl() {
        return fl;
    }

    public void setFl(String fl) {
        this.fl = fl;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }
}

3）Forecast：

package com.lucifer.demo.pojo;

import java.io.Serializable;

/**
   * Future weather
 *
 * @author: Lucifer
 * @create: 2018-09-23 23:10
 * @description:
 **/
public class Forecast implements Serializable {

 /*   "forecast":[{
                 "date": "Sunday on the 23rd", "high": "High temperature 24 °C", "fengli": "<![CDATA[4-5]]>", "low": "Low temperature 12 °C", " Fengxiang":"North wind", "type":          "clear"
    },{
                 "date": "Monday of 24th", "high": "High temperature 23°C", "fengli": "<![CDATA[<3]]>", "low": "Low temperature 11°C", " Fengxiang": "no sustained wind direction", "type":
        " "
    },{
                 "date": "25th Tuesday", "high": "high temperature 23°C", "fengli": "<![CDATA[<3]]>", "low": "low temperature 13°C", "fengxiang ":"Southwind", "type": "Cloudy"
    },{
                 "date": "Wednesday 26th", "high": "High temperature 22°C", "fengli": "<![CDATA[<3]]>", "low": "Low temperature 14°C", "fengxiang ":"Southwind", "type": "Cloudy"
    },{
                 "date": "Thursday 27th", "high": "High temperature 22°C", "fengli": "<![CDATA[3-4]]>", "low": "Low temperature 14°C", " Fengxiang":"South wind", "type": " "
    }]*/

    private String date;
    private String high;
    private String fengli;
    private String low;
    private String fengxiang;
    private String type;

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getHigh() {
        return high;
    }

    public void setHigh(String high) {
        this.high = high;
    }

    public String getFengli() {
        return fengli;
    }

    public void setFengli(String fengli) {
        this.fengli = fengli;
    }

    public String getLow() {
        return low;
    }

    public void setLow(String low) {
        this.low = low;
    }

    public String getFengxiang() {
        return fengxiang;
    }

    public void setFengxiang(String fengxiang) {
        this.fengxiang = fengxiang;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }
}

4. Create a service interface:

WeatherDataService：

package com.lucifer.demo.Service;

import com.lucifer.demo.pojo.WeatherResponse;

/**
 * Weather data interface
 */
public interface WeatherDataService {

    /**
           * Query weather data based on city ID
     * @param CityId
     * @return
     */
    WeatherResponse getDataByCityId(String CityId);

    /**
           * Check weather data by city name
     * @param cityName
     * @return
     */
    WeatherResponse getDataByCityName(String cityName);

}

5. Create an implementation class:

package com.lucifer.demo.Service;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.lucifer.demo.pojo.WeatherResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

/**
 * @author: Lucifer
 * @create: 2018-09-23 23:24
   * @description: implementation class
 **/

@Service
public class WeatherDataServiceImpl implements WeatherDataService {

    private static final String WEATHER_URI = "http://wthrcdn.etouch.cn/weather_mini?";

    @Autowired
    private RestTemplate restTemplate;

    @Override
    public WeatherResponse getDataByCityId(String cityId) {
        String uri = WEATHER_URI + "citykey=" + cityId;
        return this.getWeatherResponse(uri);
    }


    @Override
    public WeatherResponse getDataByCityName(String cityName) {
        String uri = WEATHER_URI + "city=" + cityName;
        return this.getWeatherResponse(uri);
    }


    private WeatherResponse getWeatherResponse(String uri) {
        ResponseEntity<String> respString = restTemplate.getForEntity(uri, String.class);
        ObjectMapper objectMapper = new ObjectMapper();
        WeatherResponse resp = null;
        String strBody = null;
        if (respString.getStatusCodeValue() == 200) {
            strBody = respString.getBody();
        }
        try {
            resp = objectMapper.readValue(strBody, WeatherResponse.class);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return resp;
    }

}

6. Create a controller class:

package com.lucifer.demo.Controller;

import com.lucifer.demo.Service.WeatherDataService;
import com.lucifer.demo.pojo.WeatherResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author: Lucifer
 * @create: 2018-09-23 23:45
 * @description:
 **/
@RestController
@RequestMapping(value = "/weather")
public class WeatherController {

    @Autowired
    private WeatherDataService weatherDataService;

    @GetMapping(value = "/cityId/{cityId}")
    public WeatherResponse getWeatherByCityId(@PathVariable("cityId") String cityId){
        return weatherDataService.getDataByCityId(cityId);
    }

    @GetMapping(value = "/cityName/{cityName}")
    public WeatherResponse getWeatherByCityName(@PathVariable("cityName") String cityName){
        return weatherDataService.getDataByCityName(cityName);
    }

}

7.RestConfiguration configuration class:

package com.lucifer.demo.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

/**
 * @author: Lucifer
 * @create: 2018-09-23 23:51
 * @description:
 **/
@Configuration
public class RestConfiguration {

    @Autowired
    private RestTemplateBuilder restTemplateBuilder;

    @Bean
    public RestTemplate restTemplate(){
        return restTemplateBuilder.build();
    }

}

8. Via localhost:8080/weather/cityName/Beijing