添加天气缓存

src/main/java/com/ruoyi/device/domain/impl/WeatherDomainImpl.java

@@ -1,6 +1,9 @@
 package com.ruoyi.device.domain.impl;
 
 import com.alibaba.fastjson2.JSON;
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.Expiry;
 import com.ruoyi.device.domain.api.IWeatherDomain;
 import com.ruoyi.device.domain.impl.weather.HttpUtils;
 import com.ruoyi.device.domain.model.weather.Weather;
@@ -13,6 +16,8 @@ import org.springframework.stereotype.Component;
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Random;
+import java.util.concurrent.TimeUnit;
 
 @Component
 public class WeatherDomainImpl implements IWeatherDomain {
@@ -20,15 +25,41 @@ public class WeatherDomainImpl implements IWeatherDomain {
     @Autowired
     private WeatherProperties weatherProperties;
 
+    private final Random random = new Random();
+    private final Cache<String, Weather> weatherCache;
+
+    public WeatherDomainImpl() {
+        this.weatherCache = Caffeine.newBuilder()
+                .expireAfter(new Expiry<String, Weather>() {
+                    @Override
+                    public long expireAfterCreate(String key, Weather value, long currentTime) {
+                        long randomMinutes = 1 + random.nextInt(10);
+                        return TimeUnit.MINUTES.toNanos(randomMinutes);
+                    }
+
+                    @Override
+                    public long expireAfterUpdate(String key, Weather value, long currentTime, long currentDuration) {
+                        long randomMinutes = 1 + random.nextInt(10);
+                        return TimeUnit.MINUTES.toNanos(randomMinutes);
+                    }
+
+                    @Override
+                    public long expireAfterRead(String key, Weather value, long currentTime, long currentDuration) {
+                        return currentDuration;
+                    }
+                })
+                .build();
+    }
+
 
     public  Weather weatherInfo(String lat, String lon) {
+        String cacheKey = lat + "," + lon;
+        return weatherCache.get(cacheKey, key -> {
             String host = weatherProperties.getHost();
             String path = weatherProperties.getPath();
             String method = "POST";
             Map<String, String> headers = new HashMap<>();
-        //最后在header中的格式(中间是英文空格)为Authorization:APPCODE 83359fd73fe94948385f570e3c139105
             headers.put("Authorization", "APPCODE " + weatherProperties.getAppcode());
-        //根据API的要求，定义相对应的Content-Type
             headers.put("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
             Map<String, String> querys = new HashMap<>();
             Map<String, String> bodys = new HashMap<>();
@@ -41,17 +72,13 @@ public class WeatherDomainImpl implements IWeatherDomain {
 
                 HttpResponse response = HttpUtils.doPost(host, path, method, headers, querys, bodys);
                 String json = EntityUtils.toString(response.getEntity());
-            // 将JSON字符串转换为对象
                 WeatherResponse weatherResponse = JSON.parseObject(json, WeatherResponse.class);
-            // 降雨量（枚举值：0-无雨，1-小雨，2-中雨，3-大雨）
+
-            // 使用转换后的对象
                 if (weatherResponse != null && weatherResponse.getCode() == 0) {
-                //转换风速：将风力等级转换为风速中间值
                     String windLevel = weatherResponse.getData().getCondition().getWindLevel();
                     weather.setWindSpeed(convertWindLevelToSpeed(windLevel));
                     weather.setEnvironmentTemperature(Double.valueOf(weatherResponse.getData().getCondition().getTemp()));
                     weather.setEnvironmentHumidity(Double.valueOf(weatherResponse.getData().getCondition().getHumidity()));
-                //转换降雨量
                     String conditionId = weatherResponse.getData().getCondition().getConditionId();
                     weather.setRainfall(convertConditionIdToRainfall(conditionId));
                 }
@@ -60,6 +87,7 @@ public class WeatherDomainImpl implements IWeatherDomain {
             } catch (Exception ignored) {
                 return null;
             }
+        });
     }
 
     /**