feat: 新增实例相关异常、现在实例容器是线程安全的

src/main/java/com/serliunx/ddns/config/AbstractConfiguration.java

@@ -76,15 +76,6 @@ public abstract class AbstractConfiguration implements Configuration {
         return value == null ? defaultValue : Boolean.valueOf(value);
     }
 
-    @Override
-    public void refresh() {
-        // 刷新配置信息
-        refresh0();
-        final Boolean needPrint = getBoolean(ConfigurationKeys.KEY_CFG_LOG_ONSTART);
-        if (needPrint)
-            printDetails();
-    }
-
     @Override
     @SuppressWarnings({"rawtypes", "unchecked"})
     public <T extends Enum> T getEnum(Class<T> clazz, String key) {
@@ -103,6 +94,15 @@ public abstract class AbstractConfiguration implements Configuration {
         return value == null ? defaultValue : value;
     }
 
+    @Override
+    public void refresh() {
+        // 刷新配置信息
+        refresh0();
+        final Boolean needPrint = getBoolean(ConfigurationKeys.KEY_CFG_LOG_ONSTART);
+        if (needPrint)
+            printDetails();
+    }
+
     /**
      * 载入配置信息请加锁
      */