? 先看效果
一人分饰多角（bushi）
? 后端代码
? 先引入websocket依赖
<!-- websocket消息推送 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
?? 添加 WebSocketConfig 配置
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;
@Configuration
public class WebSocketConfig {
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
??? 实体bean接收客户端发过来的信息
@Data
public class SocketMsg {
private int type;
private String sendOutUser;
private String receiveUser;
private String msg;
}
???? WebSocketUtil
import cn.hutool.json.JSONUtil;
import org.springframework.stereotype.Component;
import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArraySet;
@Component
@ServerEndpoint("/web-socket/{userName}")
public class WebSocketUtil {
private String userName;
private Session session;
private static final String USER_NAME_PREFIX = "user_name_";
private static CopyOnWriteArraySet<WebSocketUtil> webSocketSet = new CopyOnWriteArraySet<>();
private static ConcurrentHashMap<String, Session> sessionMap = new ConcurrentHashMap<>();
public synchronized static void privateMessage(SocketMsg socketMsg) {
//接收消息的用户
Session receiveUser = sessionMap.get(USER_NAME_PREFIX + socketMsg.getReceiveUser());
//发送给接收者
if(receiveUser != null){
//发送给接收者
System.out.println(socketMsg.getSendOutUser()+" 向 "+socketMsg.getReceiveUser()+" 发送了一条消息："+socketMsg.getMsg());
receiveUser.getAsyncRemote().sendText(socketMsg.getSendOutUser()+"："+socketMsg.getMsg());
}else{
//发送消息的用户
System.out.println(socketMsg.getSendOutUser()+" 私聊的用户 "+socketMsg.getReceiveUser()+" 不在线或者输入的用户名不对");
Session sendOutUser = sessionMap.get(USER_NAME_PREFIX + socketMsg.getSendOutUser());
//将系统提示推送给发送者
sendOutUser.getAsyncRemote().sendText("系统消息：对方不在线或者您输入的用户名不对");
}
}
public synchronized static void publicMessage(String userName,String message,boolean flag) {
for (WebSocketUtil item : webSocketSet) {
Session session = item.session;
if (flag){
session.getAsyncRemote().sendText(message);
}else {
//获取发送这条消息的用户
Session currentUser = sessionMap.get(USER_NAME_PREFIX + userName);
//消息不用推送到发送者的客户端
if (!session.getId().equals(currentUser.getId())){
session.getAsyncRemote().sendText(message);
}
}
}
System.out.println("公共频道接收了一条消息："+message);
}
@OnOpen
public void onOpen(Session session, @PathParam("userName") String userName) {
this.userName = userName;
this.session = session;
sessionMap.put(USER_NAME_PREFIX + userName, session);
webSocketSet.add(this);
//在线数加1
String tips = userName+" 加入聊天室。当前聊天室人数为" + webSocketSet.size();
System.out.println(tips);
publicMessage(userName,tips,true);
}
@OnMessage
public void onMessage(String message) {
if (JSONUtil.isTypeJSONObject(message)) {
SocketMsg socketMsg = JSONUtil.toBean(message, SocketMsg.class);
if(socketMsg.getType() == 1){
//单聊，需要找到发送者和接受者
privateMessage(socketMsg);
}else{
//群发消息
publicMessage(socketMsg.getSendOutUser(),socketMsg.getSendOutUser()+": "+socketMsg.getMsg(),false);
}
}
}
@OnClose
public void onClose() {
if (sessionMap.containsKey(USER_NAME_PREFIX + userName)) {
//连接关闭后，将此websocket从set中删除
sessionMap.remove(USER_NAME_PREFIX + userName);
webSocketSet.remove(this);
}
String tips = userName+" 退出聊天室。当前聊天室人数为" + webSocketSet.size();
System.out.println(tips);
publicMessage(userName,tips,true);
}
@OnError
public void onError(Throwable error) {
System.out.println("userName为：" + userName + "，发生错误：" + error.getMessage());
error.printStackTrace();
}
}
? 前端代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>聊天室</title>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<style type="text/css">
input{
width: 150px;
height: 30px;
line-height: 25px;
padding: 5px 10px;
border-radius: 5px;
border: 2px solid;
font-size: 16px;
}
#msg{
width: 300px;
}
button{
width: 80px;
height: 44px;
padding: 5px 20px;
border-radius: 5px;
}
</style>
</head>
<body>
聊天室<br/><br/>
<input type="text" id="sendOutUser" placeholder="自己的用户名">
<button onclick="connectWebSocket()">上线</button>
<button onclick="closeWebSocket()">下线</button>
<br/><br>
<input type="text" id="msg" placeholder="要发送的信息"/>
<input type="text" id="receiveUser" placeholder="接收人的用户名"/>
<button onclick="send()">发送</button>
<br><br>
<hr>
<div id="msgList"></div>
<script type="text/javascript">
var websocket = null;
//连接WebSocket
function connectWebSocket() {
var sendOutUser = document.getElementById("sendOutUser").value;
if (sendOutUser === "") {
alert("请输入用户名");
return;
}
//判断当前浏览器是否支持websocket
if ('WebSocket' in window) {
websocket = new WebSocket("ws://localhost:7070/web-socket/"+document.getElementById("sendOutUser").value);
} else {
alert('当前浏览器 not support websocket')
}
//连接发生错误的回调方法
websocket.onerror = function () {
alert("连接发生错误");
};
//连接成功建立的回调方法
websocket.onopen = function () {
var sendOutUser = document.getElementById("sendOutUser")
sendOutUser.readOnly = true
sendOutUser.style.backgroundColor='#ddd'
}
//接收到消息的回调方法
websocket.onmessage = function (event) {
console.log(event.data)
innerdiv("",event.data)
}
//连接关闭的回调方法
websocket.onclose = function () {
innerdiv("","websocket连接关闭");
}
//监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
window.onbeforeunload = function () {
closewebsocket();
}
}
//关闭连接
function closeWebSocket() {
websocket.close();
}
//发送消息
function send() {
var m = new Map(); // 空Map
var sendOutId = document.getElementById("sendOutUser") //发送者
var msg = document.getElementById("msg").value //发送消息
if (msg === "") {
alert("请输入消息");
return;
}
var receiveUser = document.getElementById("receiveUser").value //接收者
m.set("sendOutUser",sendOutUser.value);
m.set("msg",msg)
// 接收者为空时，type为群聊，否则为私聊
if (receiveUser === "") {
m.set("type",0)
}else{
m.set("receiveUser",receiveUser)
m.set("type",1)
}
json = mapToJson(m)
websocket.send(json)
innerdiv("我",msg)
}
//map转换为json
function mapToJson(map) {
var obj= Object.create(null);
for (var[k,v] of map) {
obj[k] = v;
}
return JSON.stringify(obj);
}
//显示聊天记录到页面
function innerdiv(id,txt){
var msgList = document.getElementById("msgList")
if (id === "") {
msgList.innerHTML += "<div>" + txt + "</div><br>"
}else{
msgList.innerHTML += "<div>"+ id +": "+txt+ "</div><br>"
}
}
</script>
</body>
</html>
到此这篇关于springboot结合websocket聊天室实现私聊+群聊的文章就介绍到这了,更多相关springboot websocket聊天室内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
