更新

application/api/model/UserMessage.php

@@ -54,6 +54,7 @@ class UserMessage extends Model
 
         $system_no_read_count = $system_message - $user_read_message;
         $system_last_message = db::name('system_message')
+            ->field('id,type,title,content,url')
             ->where('type', 1)//1系统消息  3公告下的房间推荐，4公告下的活动'
             ->where('FIND_IN_SET(:user_id, receiving_id)', ['user_id' => $uid])
             ->order('id desc')
@@ -77,6 +78,7 @@ class UserMessage extends Model
         $announcement_read_count = count($system_message1) - count($user_read_message1);
         unset($map['user_id']);
         $announcement_last_message = db::name('system_message')
+            ->field('id,type,title,content,url')
             ->where($map)
             ->where('FIND_IN_SET(:user_id, receiving_id)', ['user_id' => $uid])
             ->order('id desc')