更换key,createMessage->msg->content

src/service/msgService.js

@@ -12,7 +12,7 @@ const createMessage = (roomId, user, msg) => {
     userId: user.userId,
     nickname: user.nickname,
     roomId: user.roomId,
-    msg: msg,
+    content: msg,
     createTime: Date.now(),
   };
   pubClient.publish("getRoomMessage", JSON.stringify(msgObj));