报错内容如下：WebSocket connection to 'ws://127.0.0.1:8080/websocket/w' failed: 我后端得websocket注解配置是这样得@ServerEndpoint("/websocket/{name}")
我前端连接ws是var ws=new WebSocket("ws://127.0.0.1:8080/websocket/w");怎么就一直报上面那个错误