1. 服务端编码

@GetMapping(path = "/sse", produces = MediaType.TEXT_EVENT_STREAM_VALUE)    public SseEmitter sse() throws Exception {        final SseEmitter emitter = new SseEmitter();        final AtomicInteger i = new AtomicInteger(0);        new Thread(new Runnable() {            @Override            public void run() {                while (true) {                    try {                        Thread.sleep(1 * 1000);                        emitter.send(i.addAndGet(1));                    } catch (InterruptedException e) {                        throw new UnsupportedOperationException("Not yet implemented!");                    } catch (IOException e) {                        throw new UnsupportedOperationException("Not yet implemented!");                    }                }            }        }).start();        return emitter;    }

2. 客户端编码

$(function () {            var source = new EventSource("/sse");            source.onmessage = function (event) {                $('#result').html(event.data);            };        });

EventSource为客户端脚本的JavaScript对象