公告修改

src/main/java/com/gameplatform/server/service/admin/AnnouncementService.java

@@ -91,4 +91,39 @@ public class AnnouncementService {
     public boolean announcementExists(Long id) {
         return getAnnouncementById(id) != null;
     }
+    
+    /**
+     * 根据归属ID获取公告（分页）
+     */
+    public List<Announcement> getAnnouncementsByBelongId(Integer belongId, int size, int offset) {
+        return announcementMapper.findByBelongId(belongId, size, offset);
+    }
+    
+    /**
+     * 根据归属ID获取公告数量
+     */
+    public long getAnnouncementCountByBelongId(Integer belongId) {
+        return announcementMapper.countByBelongId(belongId);
+    }
+    
+    /**
+     * 根据归属ID和启用状态获取公告（分页）
+     */
+    public List<Announcement> getAnnouncementsByBelongIdAndEnabled(Integer belongId, Boolean enabled, int size, int offset) {
+        return announcementMapper.findByBelongIdAndEnabled(belongId, enabled, size, offset);
+    }
+    
+    /**
+     * 根据归属ID和启用状态获取公告数量
+     */
+    public long getAnnouncementCountByBelongIdAndEnabled(Integer belongId, Boolean enabled) {
+        return announcementMapper.countByBelongIdAndEnabled(belongId, enabled);
+    }
+    
+    /**
+     * 获取指定归属ID的启用公告（用于前端显示）
+     */
+    public List<Announcement> getEnabledAnnouncementsByBelongId(Integer belongId) {
+        return announcementMapper.findByBelongIdAndEnabled(belongId, true, 10, 0); // 最多返回10条启用的公告
+    }
 }