#Java#Spring#WebFlux#WebClient#Reactor#EventSource#
页面EeventSource如何接收SSE推送的数据
讲解: https://www.bilibili.com/video/av82416469/
WebfluxServerApplication.java
package com.example.webfluxserver;
import lombok.extern.log4j.Log4j2;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.codec.ServerSentEvent;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Flux;
import java.time.Duration;
@Log4j2
@SpringBootApplication
public class WebfluxServerApplication extends BaseApplication {
public static void main(String[] args) {
SpringApplication.run(WebfluxServerApplication.class, args);
}
@RestController
class EmployeeController {
@CrossOrigin
@GetMapping(value = "sse")
public Flux<ServerSentEvent<String>> sse(){
return Flux.interval(Duration.ofMillis(1000)).map(val ->{
return ServerSentEvent.<String>builder()
//.id(UUID.randomUUID().toString())
.event("ping")
.data(val.toString())
.build();
});
}
}
}
sse.html
<html>
<head>
<meta charset="UTF-8">
<title>Server-sent events demo</title>
</head>
<body>
<button>Close the connection</button>
<ul>
</ul>
<script>
var button = document.querySelector("button");
var eventList = document.querySelector('ul');
var evtSource = new EventSource('http://127.0.0.1:8080/sse');
evtSource.onmessage = function(e) {
console.log("data:"+e.data);
var newElement = document.createElement("li");
newElement.innerHTML = "default data : " + e.data;
eventList.appendChild(newElement);
};
evtSource.onopen = function(){
console.log("connection opened")
}
evtSource.onerror = function(){
console.log("connection error");
}
button.onclick = function() {
console.log("connnection closed")
evtSource.close();
};
evtSource.addEventListener("ping", function(e) {
var newElement = document.createElement("li");
newElement.innerHTML = "ping event data " +e.data;
eventList.appendChild(newElement);
});
</script>
</body>
</html>
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