修复帖子点赞和收藏功能

Change-Id: If66f9065607d97fb9527f0905b3465e6cd5b5995
diff --git a/src/context/UserContext.js b/src/context/UserContext.js
index 64c1b9a..a2be382 100644
--- a/src/context/UserContext.js
+++ b/src/context/UserContext.js
@@ -6,22 +6,24 @@
   const [user, setUser] = useState(null);
   const [loading, setLoading] = useState(true);
 
-  // 加载本地存储的用户信息
   useEffect(() => {
     const storedUser = localStorage.getItem('user');
     if (storedUser) {
       setUser(JSON.parse(storedUser));
+    } else {
+      // 设置默认用户(id: 1)
+      const defaultUser = { id: 1, name: '测试用户' };
+      localStorage.setItem('user', JSON.stringify(defaultUser));
+      setUser(defaultUser);
     }
     setLoading(false);
   }, []);
 
-  // 保存用户信息到本地存储
   const saveUser = (userData) => {
     localStorage.setItem('user', JSON.stringify(userData));
     setUser(userData);
   };
 
-  // 退出登录
   const logout = () => {
     localStorage.removeItem('user');
     setUser(null);
@@ -34,4 +36,4 @@
   );
 };
 
-export const useUser = () => useContext(UserContext);
\ No newline at end of file
+export const useUser = () => useContext(UserContext);