毕设源码-基于springboot的天气预报系统.zip

package com.weather.service.impl; import com.fasterxml.jackson.databind.ObjectMapper; import com.weather.service.WeatherDataService; import com.weather.vo.WeatherResponse; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.http.ResponseEntity; import org.springframework.stereotype.Service; import org.springframework.web.client.RestTemplate; import java.io.IOException; import java.util.concurrent.TimeUnit; @Slf4j @Service public class WeatherDataServiceImpl implements WeatherDataService { @Autowired private RestTemplate restTemplate; @Autowired private StringRedisTemplate redisTemplate; private static final long TIME_OUT = 1800L; //redis超时时间为30分钟 private static final String WEATHER_URI = "http://wthrcdn.etouch.cn/weather_mini?"; @Override public WeatherResponse getDataByCityId(final String cityId) { String uri = WEATHER_URI + "citykey=" + cityId; return this.doGetWeather(uri); } @Override public WeatherResponse getDataByCityName(final String cityName) { String uri = WEATHER_URI + "city=" + cityName; return this.doGetWeather(uri); } private WeatherResponse doGetWeather(String uri) { ObjectMapper mapper = new ObjectMapper(); WeatherResponse resp = null; String strBody = null; // 先从缓存中查询数据 if (redisTemplate.hasKey(uri)) { strBody = redisTemplate.opsForValue().get(uri); } else { // 缓存中没有就调用接口查询天气数据 ResponseEntity<String> respString = restTemplate.getForEntity(uri, String.class); if (respString.getStatusCodeValue() == 200) { strBody = respString.getBody(); } // 把查询出来的数据写入缓存中 redisTemplate.opsForValue().set(uri,strBody,TIME_OUT,TimeUnit.SECONDS); } try { resp = mapper.readValue(strBody, WeatherResponse.class); } catch (IOException e) { //e.printStackTrace(); log.error("Error!",e); } return resp; } /** * 根据城市id来同步天气数据 */ @Override public void syncDataByCityId(String cityId) { String uri = WEATHER_URI + "citykey=" + cityId; this.saveWeatherDate(uri); } /** * 把天气数据放入缓存中 */ private void saveWeatherDate(String uri) { String strBody = null; ResponseEntity<String> respString = restTemplate.getForEntity(uri, String.class); if (respString.getStatusCodeValue() == 200) { strBody = respString.getBody(); } // 把查询出来的数据写入缓存中 redisTemplate.opsForValue().set(uri,strBody,TIME_OUT,TimeUnit.SECONDS); } }