国外网站怎么上,网站建设兼容性,可以做外贸的网站有哪些,柳州营销网站建设一、概述
本文基于spring-boot-starter-websocket简单的完成收发信息功能#xff0c;使用注解形式进行实现。
二、相关配置
spring:2.0.2#xff0c;jdk:1.8.202#xff0c;maven:3.3.9
因为spring和maven有版本匹配的要求#xff0c;请大家注意自己的版本是否匹配
三…一、概述
本文基于spring-boot-starter-websocket简单的完成收发信息功能使用注解形式进行实现。
二、相关配置
spring:2.0.2jdk:1.8.202maven:3.3.9
因为spring和maven有版本匹配的要求请大家注意自己的版本是否匹配
三、项目结构 四、代码
1.启动类
SocketDemoApplication
package com.lp.socketdemo;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;EnableScheduling
SpringBootApplication
public class SocketDemoApplication {public static void main(String[] args) {SpringApplication.run(SocketDemoApplication.class, args);}}2. 监听类
WsServerEndpoint
package com.lp.socketdemo.java;import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;/*** 监听websocket地址myWs*/
ServerEndpoint(/myWs)
Component
public class WsServerEndpoint {static MapString,Session map new ConcurrentHashMap();OnOpenpublic void onOpen(Session session) {map.put(session.getId(),session);System.out.println(webSockte is open: session.getId());sendAll(session,上线);}OnMessagepublic String onMessage(String message) {System.out.println(收到一条信息message);return 已收到你的消息message;}OnClosepublic void onClose(Session session) {System.out.println(webSockte is closesession.getId());sendAllEceptMe(session,下线);map.remove(session.getId());}Scheduled(fixedRate 60000)public void sendMsg() {for (String key: map.keySet()) {try {map.get(key).getBasicRemote().sendText(心跳);} catch (IOException e) {e.printStackTrace();}}}public void sendAll(Session session,String msg) {for (String key: map.keySet()) {try {map.get(key).getBasicRemote().sendText(session.getId():msg);} catch (IOException e) {e.printStackTrace();}}}public void sendAllEceptMe(Session session,String msg) {for (String key: map.keySet()) {try {if(!session.getId().equals(key)) {map.get(key).getBasicRemote().sendText(session.getId():msg);}} catch (IOException e) {e.printStackTrace();}}}
}3.配置类
WebSocketConfig
package com.lp.socketdemo.java;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;/*** 配置类注入bean*/
Configuration
public class WebSocketConfig {Beanpublic ServerEndpointExporter serverEndpointExporter() {return new ServerEndpointExporter();}
}4.前段
websocketTest.html
!DOCTYPE html
html
headmeta http-equivContent-Type contenttext/html; charsetUTF-8titlewebsocket调试页面/title
/head
script typetext/javascript srcjquery.min.js/script
body
div stylefloat: left; padding: 20pxstronglocation:/strong br /input typetext idserverUrl size35 value / br /button onclickconnect()connect/buttonbutton onclickwsclose()disConnect/buttonbr / strongmessage:/strong br / input idtxtMsg typetext size50 /br /button onclicksendEvent()发送/button
/divdiv stylefloat: left; margin-left: 20px; padding-left: 20px; width: 350px; border-left: solid 1px #cccccc; strong消息记录/strongdiv styleborder: solid 1px #999999;border-top-color: #CCCCCC;border-left-color: #CCCCCC; padding: 5px;width: 100%;height: 172px;overflow-y: scroll; idecho-log/divbutton onclickclearLog() styleposition: relative; top: 3px;清除消息/button
/div/div
/body
!-- 下面是h5原生websocket js写法 --
script typetext/javascriptlet output ;let websocket;function connect(){ //初始化连接output document.getElementById(echo-log)let inputNode document.getElementById(serverUrl);let wsUri inputNode.value;try{websocket new WebSocket(wsUri);}catch(ex){console.log(ex)alert(对不起websocket连接异常)}connecting();window.addEventListener(load, connecting, false);}function connecting(){websocket.onopen function(evt) { onOpen(evt) };websocket.onclose function(evt) { onClose(evt) };websocket.onmessage function(evt) { onMessage(evt) };websocket.onerror function(evt) { onError(evt) };}function sendEvent(){let msg document.getElementById(txtMsg).valuedoSend(msg);}//连接上事件function onOpen(evt){writeToScreen(CONNECTED);doSend(WebSocket 已经连接成功);}//关闭事件function onClose(evt){writeToScreen(连接已经断开);}//后端推送事件function onMessage(evt){writeToScreen(span stylecolor: blue;服务器: evt.data/span);}function onError(evt){writeToScreen(span stylecolor: red;异常信息:/span evt.data);}function doSend(message){writeToScreen(客户端A: message);websocket.send(message);}//清除div的内容function clearLog(){output.innerHTML ;}//浏览器主动断开连接function wsclose(){websocket.close();}function writeToScreen(message){let pre document.createElement(p);pre.innerHTML message;output.appendChild(pre);}
/script
/html五、效果展示 六、引用
课程介绍_WebSocket入门与案例实战-慕课网
最全面的SpringMVC教程六——WebSocket_springmvc websocket_小新要变强的博客-CSDN博客
