[网络协议]vue+websocket+spring boot 日志自动刷新

pom 依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <!-- websocket -->
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>

config

package com.baidu.sobi.polestar.dataintegration.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;

/**
 * @author chongmengzhao
 * @version 0.1
 * @date 2021/11/8 11:35 上午
 * @Description TODO
 */
@Configuration
public class WebSocketConfig {

    /**
     * 注入一个ServerEndpointExporter,该Bean会自动注册使用@ServerEndpoint注解申明的websocket endpoint
     */
    @Bean
    public ServerEndpointExporter serverEndpointExporter() {
        return new ServerEndpointExporter();
    }

}

OneWebSocket

package com.baidu.sobi.polestar.dataintegration.socket;

import com.baidu.sobi.polestar.common.utils.DateUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author chongmengzhao
 * @version 0.1
 * @date 2021/11/8 11:37 上午
 * @Description TODO
 */
@Slf4j
@ServerEndpoint(value = "/test/one")
@Component
public class OneWebSocket {

    /**
     * 记录当前在线连接数
     */
    private static AtomicInteger onlineCount = new AtomicInteger(0);

    /**
     * 连接建立成功调用的方法
     */
    @OnOpen
    public void onOpen(Session session) {
        onlineCount.incrementAndGet(); // 在线数加1
        log.info("有新连接加入：{}，当前在线人数为：{}", session.getId(), onlineCount.get());
    }

    /**
     * 连接关闭调用的方法
     */
    @OnClose
    public void onClose(Session session) {
        onlineCount.decrementAndGet(); // 在线数减1
        log.info("有一连接关闭：{}，当前在线人数为：{}", session.getId(), onlineCount.get());
    }

    /**
     * 收到客户端消息后调用的方法
     *
     * @param message 客户端发送过来的消息
     */
    @OnMessage
    public void onMessage(String message, Session session) {
        log.info("服务端收到客户端[{}]的消息:{}", session.getId(), message);
        this.sendMessage("Hello, " + message, session);
    }

    @OnError
    public void onError(Session session, Throwable error) {
        log.error("发生错误");
        error.printStackTrace();
    }

    /**
     * 服务端发送消息给客户端
     */
    private void sendMessage(String message, Session toSession) {
        String msg = "";
        while (true) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            msg = msg + DateUtil.toNow() + "\n";
            try {
                toSession.getBasicRemote().sendText(msg);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
//        try {
//            log.info("服务端给客户端[{}]发送消息{}", toSession.getId(), message);
//            toSession.getBasicRemote().sendText(message);
//        } catch (Exception e) {
//            log.error("服务端发送消息给客户端失败：{}", e);
//        }
    }
}

vue 页面

<template>

<div>

<el-input v-model="inputTxt"/>

<el-button @click="send">Send</el-button>

<el-button @click="closeWebSocket">Close</el-button>

<div id="msg"></div>

</div>

</template>

<script>

export default {

data() {

return {

websock: undefined,

inputTxt: undefined,

};

},

created() {

// 页面刚进入时开启长连接

this.initWebSocket();

},

destroyed: function() {

// 页面销毁时关闭长连接

this.websocketclose();

},

methods: {

closeWebSocket () {

this.websock.close();

},

send () {

this.websocketsend(this.inputTxt);

},

initWebSocket () {

// ws地址

const wsuri = 'ws://******/dataInteg' + '/test/one';

this.websock = new WebSocket(wsuri);

this.websock.onopen = this.websocketsend; // 一进入就加载后端服务

this.websock.onerror = this.websocketonerror;

this.websock.onmessage = this.websocketonmessage;

this.websock.onclose = this.websocketclose;

},

websocketonopen() {

console.log('WebSocket连接成功');

},

websocketonerror(e) { // 错误

console.log('WebSocket连接发生错误');

},

websocketonmessage(e) {

// 数据接收

const redata = e.data;

// 注意：长连接我们是后台直接1秒推送一条数据，

// 但是点击某个列表时，会发送给后台一个标识，后台根据此标识返回相对应的数据，

// 这个时候数据就只能从一个出口出，所以让后台加了一个键，例如键为1时，是每隔1秒推送的数据，为2时是发送标识后再推送的数据，以作区分

console.log(redata);

document.getElementById('msg').innerHTML += redata + '<br/>';

},

websocketsend(agentData) {

// 数据发送

this.websock.send(agentData);

},

websocketclose(e) {

// 关闭

console.log('connection closed (' + e.code + ')');

},

},

};

</script>

<style lang='less' scoped>

div {

margin-top: 60px;

}

</style>