盛京棋牌 > PHP技术 > swoole > ThinkPHP5.0框架结合Swoole开发实现WebSocket在线聊天案例详解
2019
10-16

ThinkPHP5.0框架结合Swoole开发实现WebSocket在线聊天案例详解

盛京棋牌前提系统已经安装好了Swoole PECL 拓展(相关文章:Linux下源码包安装使用Swoole扩展

在tp5的项目根目录下执行composer命令安装think-swoole:

composer require topthink/think-swoole  盛京棋牌  

话不多说,直接上代码:

新建WebSocket.php控制器:

(监听端口要确认服务器放行,宝塔环境还需要添加安全组规则)

<?php
 
namespace app\home\controller;
use think\swoole\Server;
class WebSocket extends Server
{
  protected $host = '0.0.0.0'; //监听所有地址
  protected $port = 9501; //监听9501端口
  protected $serverType = 'socket';
  protected $option = [ 
    'worker_num'=> 4, //设置启动的Worker进程数
    'daemonize' => false, //守护进程化(上线改为true)
    'backlog'   => 128, //Listen队列长度
    'dispatch_mode' => 2, //固定模式,保证同一个连接发来的数据只会被同一个worker处理
 
    //心跳检测:每60秒遍历所有连接,强制关闭10分钟内没有向服务器发送任何数据的连接
    'heartbeat_check_interval' => 60,
    'heartbeat_idle_time' => 600
  ];
 
  //建立连接时回调函数
  public function onOpen($server,$req)
  {
    $fd = $req->fd;//客户端标识
    $uid = $req->get['uid'];//客户端传递的用户id
    $token = $req->get['token'];//客户端传递的用户登录token
     
    //省略token验证逻辑......
    if (!$token) {
      $arr = array('status'=>2,'message'=>'token已过期');
      $server->push($fd, json_encode($arr));
      $server->close($fd);
      return;
    }
    //省略给用户绑定fd逻辑......
    echo "用户{$uid}建立了连接,标识为{$fd}\n";
  }
 
  //接收数据时回调函数
  public function onMessage($server,$frame)
  {
    $fd = $frame->fd;
    $message = $frame->data;
 
    //省略通过fd查询用户uid逻辑......
    $uid = 666;
    $data['uid'] = $uid;
    $data['message'] = '用户'.$uid.'发送了:'.$message;
    $data['post_time'] = date("m/d H:i",time());
    $arr = array('status'=>1,'message'=>'success','data'=>$data);
 
    //仅推送给当前连接用户
    //$server->push($fd, json_encode($arr));
     
    //推送给全部连接用户
    foreach($server->connections as $fd) {
      $server->push($fd, json_encode($arr));
    } 
  }
 
  //连接关闭时回调函数
  public function onClose($server,$fd)
  {
    echo "标识{$fd}关闭了连接\n";
  }
}

前端演示页面:

(省略控制器判断登录状态、分配数据逻辑......)

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<title>Chat</title>
<link rel="stylesheet" type="text/css" href="/static/liaotian/chat.css" rel="external nofollow" />
<script src="/static/liaotian/js/jquery.min.js"></script>
<script src="/static/liaotian/js/flexible.js"></script>
</head>
<body>
  <header class="header">
    <a class="back" href="javascript:history.back()" rel="external nofollow" ></a>
    <h5 class="tit">在线聊天</h5>
    <a href=""><div class=" rel="external nofollow" right">退出</div></a>
  </header>
 
  <!-- 聊天内容 start-->
    <div class="message"> </div>
  <!-- 聊天内容 end-->
 
  <!-- 底部 start-->
  <div class="footer">
    <img id="setbtn" src="/static/liaotian/images/hua.png" alt="" />
    <img src="/static/liaotian/images/xiaolian.png" alt="" />
    <input type="text" id="msg" value="" maxlength="300">
    <p style="background: rgb(17, 79, 142);" id="sendBtn">发送</p>
  </div>
  <!-- 底部 end-->
</body>
</html>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/layer/3.1.0/layer.js"></script>
<script type="text/javascript">
$(function () {
  var uid = 666;//当前用户id
  var token = 'abcdefg';//用户token
 
  //判断浏览器是否支持WebSocket
  var supportsWebSockets = 'WebSocket' in window || 'MozWebSocket' in window;
  if (supportsWebSockets) {
    //建立WebSocket连接(ip地址换成自己主机ip)
    var ws = new WebSocket("ws://127.0.0.1:9501?uid="+uid+"&token="+token);
    ws.onopen = function () {
      layer.msg('服务器连接成功',{shade:0.1,icon:1,time:600});
    };
    ws.onerror = function () {
      layer.msg('服务器连接失败',{shade:0.1,icon:2,time:600});
    };
    ws.onmessage = function (evt) {
      var data = $.parseJSON(evt.data);
      //错误提示
      if(data.status != 1){
        layer.alert(data.message,{icon:2});
        return;
      }
      //消息返回
      if (data.status==1 && data.data.message!='') {
        var html = "";
        if (data.data.uid == uid) {
          html += "<div style='word-break:break-all' class=\"show\"><div class=\"time\">"+data.data.post_time+"</div><div class=\"msg\"><img src=\""+data.data.head_img+"\" alt=\"\" /><p><i clas=\"msg_input\"></i>"+data.data.message+"</p></div></div>";
        }else{
          html += "<div style='word-break:break-all' class=\"send\"><div class=\"time\">"+data.data.post_time+"</div><div class=\"msg\"><img src=\""+data.data.head_img+"\" alt=\"\" /><p><i clas=\"msg_input\"></i>"+data.data.message+"</p></div></div>";
        }
      }
      $(".message").append(html);
      setTimeout(function () {
        ($('.message').children("div:last-child")[0]).scrollIntoView();//向上滚动
      },100);
    };
    ws.onclose = function (res) {
       
    };
    //按钮发送
    $("#sendBtn").click(function () {
      var contents = $("#msg").val().trim();
      if(contents == null || contents == ""){
        layer.msg('内容为空',{shade:0.1,icon:2,time:600});      
        return false;
      }else{
        ws.send(contents);
        $("#msg").val("");
      }
    });
    //回车发送
    $("#msg").keydown(function (evel) {
      var that = $(this);
      if (evel.keyCode == 13) {
        evel.cancelBubble = true;
        evel.preventDefault();
        evel.stopPropagation();
        var contents = that.val().trim();
        if(contents == null || contents == ""){
          layer.msg('内容为空',{shade:0.1,icon:2,time:600});       
          return false;
        }else{
          ws.send(contents);
          that.val("");
        }
      }
    });
  }else{
    layer.alert("您的浏览器不支持 WebSocket!");
  }
});
</script>
服务器移到项目根目录开启服务:
php public/index.php Websocket/start

(这里的路径,是因为我绑定了home??槲夏??,tp5默认情况是:php public/index.php index/Websocket/start)

开启成功,查看端口已经被监听:

lsof -i:9501

服务器监听如下:

用户每刷新重连一次,fd标识都会改变。

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