diff --git a/src/main/java/org/anyin/gitee/shiro/extension/DefaultExtensionHandlerFactoryImpl.java b/src/main/java/org/anyin/gitee/shiro/extension/DefaultExtensionHandlerFactoryImpl.java
index e22e585..4c1f5a1 100644
--- a/src/main/java/org/anyin/gitee/shiro/extension/DefaultExtensionHandlerFactoryImpl.java
+++ b/src/main/java/org/anyin/gitee/shiro/extension/DefaultExtensionHandlerFactoryImpl.java
@@ -31,10 +31,10 @@ public class DefaultExtensionHandlerFactoryImpl implements IExtensionHandlerFact
         ExtensionCacheKey<Y> cacheKey = new ExtensionCacheKey(extension, type);
         IExtensionHandler result = this.serviceCache.get(cacheKey);
         if (result == null) {
-            List<IExtensionHandler> payPlatformAbles = serviceListCache.getOrDefault(extension, Collections.synchronizedList(Collections.emptyList()));
-            for (IExtensionHandler payPlatformAble : payPlatformAbles) {
-                if (type.isAssignableFrom(payPlatformAble.getClass())) {
-                    result = payPlatformAble;
+            List<IExtensionHandler> extensionHandlers = serviceListCache.getOrDefault(extension, Collections.synchronizedList(Collections.emptyList()));
+            for (IExtensionHandler extensionHandler : extensionHandlers) {
+                if (type.isAssignableFrom(extensionHandler.getClass())) {
+                    result = extensionHandler;
                     serviceCache.put(cacheKey, result);
                     break;
                 }
diff --git a/src/main/java/org/anyin/gitee/shiro/extension/IExtensionHandlerFactory.java b/src/main/java/org/anyin/gitee/shiro/extension/IExtensionHandlerFactory.java
index 0caf9aa..8712367 100644
--- a/src/main/java/org/anyin/gitee/shiro/extension/IExtensionHandlerFactory.java
+++ b/src/main/java/org/anyin/gitee/shiro/extension/IExtensionHandlerFactory.java
@@ -1,8 +1,19 @@
 package org.anyin.gitee.shiro.extension;
 
 public interface IExtensionHandlerFactory {
-
+    /**
+     * 添加扩展处理器
+     * @param extensionHandler 处理器
+     * @param <Y> 扩展点
+     */
     <Y extends Enum<Y>>void addExtensionHandler(IExtensionHandler<Y> extensionHandler);
 
+    /**
+     * 获取扩展点处理器
+     * @param extension 扩展点
+     * @param type 处理器类型
+     * @param <T> 扩展处理器
+     * @param <Y> 扩展点
+     */
     <T extends IExtensionHandler<Y>,Y extends Enum<Y>> T getExtensionHandler(Y extension, Class<T> type);
 }