Error during WebSocket handshake: Sent non-empty 'Sec-WebSocket-Protocol' header but no response was

Error during WebSocket handshake: Sent non-empty ‘Sec-WebSocket-Protocol’ header but no response was received

环境：springBoot vue 前后端分离 websocket通信
前端访问后端时需要传入token，传入后，后端返回时未设置请求头，导致异常。
前端部分：

websock = new WebSocket('ws://xx/yy',[token]);

解决：
后端代码：

String token = request.getHeader("sec-websocket-protocol");//获取前端传入token
response.setHeader("sec-websocket-protocol",requestHeader);//返回请求头