Angular服务器发送事件this.eventSource.onmessage调用失败，错误为"EventSource's response has a MIME type ("application/json") that is not "text/event-stream". Aborting the connection."我在Chrome开发工具（随附图片）中看到返回了两个Content-Type。x1c 0d1x

后端代码：SpringReact器/REST

@GetMapping(value="/events",produces = "text/event-stream;charset=UTF-8")
    public Flux<ConsumerEvent> getProductEvents(){
        return kafkaService.getReceiverRecordAllFlux()
                .map(record->
                    new ConsumerEvent(record.topic(),record.value())
                );
        }
}

前端：角形

public startKafkaTopicInfoEventSource(): void {
    let url = BASE_URL;
    this.eventSource = new EventSource(url); 
    this.eventSource.onmessage = (event) => {//Error: EventSource's response has a MIME type ("application/json") that is not "text/event-stream". Aborting the connection
        this.zone.run(() => {
        // some code here
      })

    }
// other code here
}

方法this.eventSource.onmessage给出错误EventSource's response has a MIME type ("application/json") that is not "text/event-stream". Aborting the connection.
任何帮助都很好！