vue使用EventSource

转载:https://blog.csdn.net/qq_42345108/article/details/103122985

https://github.com/chengxy-nds/Springboot-Notebook/tree/master/springboot-realtime-data

https://blog.csdn.net/u011943534/article/details/120251614

vue起初出现的问题
EventSource's response has a MIME type ("application/json") that is not "text/event-stream". Aborting the connection.