pom文件
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.czh</groupId>
<artifactId>websocket</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>websocket</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>webjars-locator-core</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>sockjs-client</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>stomp-websocket</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.3.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
配置websocket
package com.czh.websocket.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
@Configuration
@EnableWebSocketMessageBroker//开启websocket消息代理
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
@Override
public void configureMessageBroker(MessageBrokerRegistry config) {
/* config.enableSimpleBroker("/topic")
标识消息代理的前缀，即如果有消息的前缀是“topic”,就会给
消息代理broker，再有消息代理将消息广播给当前连接的客户端*/
config.enableSimpleBroker("/topic");
/*config.setApplicationDestinationPrefixes("/app")
表示配置一个或多个前缀，通过这些前缀过滤出需要被注解方法处理的消息
* */
config.setApplicationDestinationPrefixes("/app");
}
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/chat").withSockJS();
}
}
定义Controller
package com.czh.websocket.controller;
import com.czh.websocket.model.Message;
import org.springframework.messaging.handler.annotation.MessageMapping;
import org.springframework.messaging.handler.annotation.SendTo;
import org.springframework.stereotype.Controller;
@Controller
public class GreetingController {
@MessageMapping("hello")
@SendTo("/topic/greetings")
public Message greeting(Message message)throws Exception{
return message;
}
}
页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>群聊</title>
<script src="/webjars/jquery/jquery.min.js"></script>
<script src="/webjars/sockjs-client/sockjs.min.js"></script>
<script src="/webjars/stomp-websocket/stomp.min.js"></script>
</head>
<body>
<div>
<label for="name">请输入用户名：</label>
<input type="text" id="name" placeholder="用户名">
</div>
<div>
<button id="connect" type="button">连接</button>
<button id="disconnect" type="button" disabled="disabled">断开连接</button>
</div>
<div id="chat" style="display: none;">
<div>
<label for="name">请输入聊天内容：</label>
<input type="text" id="content" placeholder="聊天内容">
</div>
<button id="send" type="button">发送</button>
<div id="greetings">
<div id="conversation" style="display: none">群聊进行中...</div>
</div>
</div>
<script>
var stompClient = null;
function setConnected(connected) {
$("#connect").prop("disabled", connected);
$("#disconnect").prop("disabled", !connected);
if (connected) {
$("#conversation").show();
$("#chat").show();
}
else {
$("#conversation").hide();
$("#chat").hide();
}
$("#greetings").html("");
}
function connect() {
if (!$("#name").val()) {
return;
}
var socket = new SockJS('/chat');
stompClient = Stomp.over(socket);
stompClient.connect({}, function (frame) {
setConnected(true);
stompClient.subscribe('/topic/greetings', function (greeting) {
showGreeting(JSON.parse(greeting.body));
});
});
}
function disconnect() {
if (stompClient !== null) {
stompClient.disconnect();
}
setConnected(false);
}
function sendName() {
stompClient.send("/app/hello",
{},
JSON.stringify({'name': $("#name").val(),'content':$("#content").val()}));
}
function showGreeting(message) {
$("#greetings")
.append("<div>" + message.name+":"+message.content + "</div>");
}
$(function () {
$( "#connect" ).click(function() { connect(); });
$( "#disconnect" ).click(function() { disconnect(); });
$( "#send" ).click(function() { sendName(); });
});
</script>
</body>
</html>
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