Springboot基于websocket实现简单在线聊天功能

时间：2021-05-20

添加maven依赖

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.5.RELEASE</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>springboot-websocket</artifactId> <name>springboot-websocket</name> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-websocket</artifactId> </dependency> </dependencies></project>

添加websocket配置

@Configuration@EnableWebSocketpublic class MyWebSocketConfig implements WebSocketConfigurer { @Override public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) { registry.addHandler(myHandler(), "/myHandler").setAllowedOrigins("*"); } @Bean public WebSocketHandler myHandler() { return new MyTextWebSocketHandler(); }}

实现具体的handler

public class MyTextWebSocketHandler extends TextWebSocketHandler { private Set<WebSocketSession> sessions = new HashSet<>(); @Override protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception { if (session.isOpen()) { sessions.add(session); } sendToAll(message); } private void sendToAll(TextMessage message) throws IOException { for (WebSocketSession session : sessions) { session.sendMessage(message); } } @Override public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception { sessions.remove(session); }}

即可通过ws://localhost:8080/myHandler访问websocket

添加测试页面：

<html><script type="text/javascript"> if ("WebSocket" in window) { var ws = new WebSocket("ws://localhost:8080/myHandler"); ws.onopen = function () { }; ws.onmessage = function (evt) { document.getElementById('messageDiv').innerHTML += evt.data + "</br>"; }; ws.onclose = function () { console.log("close connect"); }; } else { alert("您的浏览器不支持 WebSocket!"); } function send() { ws.send(document.getElementById("input").value + ": " + document.getElementById("message").value); }</script></head><body>当前用户: <input id="input"/><br/><a href="#" rel="external nofollow" onclick="send();">发送消息</a>: <input id="message"/><div id="messageDiv"></div></body></html>

即可实现简单的通信功能

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

声明：本页内容来源网络，仅供用户参考；我单位不保证亦不表示资料全面及准确无误，也不保证亦不表示这些资料为最新信息，如因任何原因，本网内容或者用户因倚赖本网内容造成任何损失或损害，我单位将不会负任何法律责任。如涉及版权问题，请提交至online#300.cn邮箱联系删除。

相关文章