JavaScript 连接消息(RabbitMQ)

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简介: JavaScript 连接消息(RabbitMQ)

STOMP是一个简单的面向文本的消息传递协议。它定义了一种可互操作的有线格式 ,以便任何可用的 STOMP 客户端都可以与任何 STOMP 消息代理进行通信,从而在语言和平台之间提供简单而广泛的消息互操作性(STOMP 网站有一个STOMP 客户端和服务器实现列表。


官方介绍


代码已上传,查看


使用:


环境准备


RabbitMQ开通STOMP通道:


rebbitmq安装目录sbin文件夹下执行命令

rabbitmq-plugins enable rabbitmq_web_stomp
rabbitmq-plugins enable rabbitmq_web_stomp_examples
#重启
service rabbitmq-server stop && service rabbitmq-server start

1673322014362.jpg

登录web管理页面:http://localhost:15672/ 新建一个交换机

1673322041690.jpg

代码


index.html

<!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>Document</title>
  <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
  <script src="js\stomp.js"></script>
</head>
<body>
  <h1>我的页面</h1>
  <button> 发送一条消息</button>
</body>
</html>
<script type="module">
import crewebsocket from './js/crewebsocket.js'
//连接消息,并监听交换机
crewebsocket.ConnSocket(function(){
  $('body').append("<h1>ConnSocket ok !!!</h1>");
  crewebsocket.OnOpen();
});
//重写接收消息方法
crewebsocket.onMessageUnit = function(msg){
  $('body').append("<h1>" + msg + "</h1>");
}
//发送消息
$(document).on('click', 'button',function(){
  crewebsocket.SendMsg("hello world");
});
</script>

mywebsocket.js

var mywebsocket = {
  WsObj: "",
  ConnUrl: "",
  msConfig: {
    base: {
    rabbitmqServer: "127.0.0.1:15674",
    rabbitmqUser: "guest",
    rabbitmqPass: "guest",
    appid: "zs"
    },
    info: {
    changename: "testmq_2022",
    routingKey: "111"
    }
  },
  InitUrl: function(url, port, userId, userName, unitId, unitName, ip, projId, callback) {
    if (typeof callback == 'function') {
    callback();
    }
  },
  ConnSocket: function(callback) {
    this.ConnUrl = "ws://" + this.msConfig.base.rabbitmqServer + "/ws"
    if ("WebSocket" in window) {
    this.WsObj = new WebSocket(this.ConnUrl);
    } else if ("MozWebSocket" in window) {
    this.WsObj = new MozWebSocket(this.ConnUrl);
    }
    if (this.WsObj != "") {
    this.WsObj = Stomp.over(this.WsObj);
    this.WsObj.heartbeat.outgoing = 10000; // 客户端每10000ms发送一次心跳检测
    this.WsObj.heartbeat.incoming = 0; // // client不接收serever端的心跳检测
    this.WsObj.connect(this.msConfig.base.rabbitmqUser, this.msConfig.base.rabbitmqPass,
      callback, this.OnClose, '/');
    this.WsObj.debug = false; //如需调试输出,直接注释此行
    this.WsObj.onclose = this.OnClose;
    this.WsObj.onerror = this.OnError;
    }
    // if (typeof callback == 'function') {
    //   callback();
    //}
  },
  SendInsideMsg: function(msg) {
    if (this.WsObj != "" && this.WsObj != undefined) {
    this.WaitForConnection(function() {
      mywebsocket.WsObj.send(msg);
      if (typeof callback == 'function') {
      callback();
      }
    }, 1000);
    }
  },
  SendMsg: function(msg, callback) {
    if (this.WsObj != "" && this.WsObj != undefined) {
    this.WaitForConnection(function() {
      mywebsocket.WsObj.send("/exchange/" + mywebsocket.msConfig.info.changename + "/222", {}, msg);
      if (typeof callback == 'function') {
      callback();
      }
    }, 1000);
    }
  },
  WaitForConnection: function(callback, interval) {
    if (this.WsObj.ws.readyState === 1) {
    callback();
    } else {
    var that = this;
    setTimeout(function() {
      that.WaitForConnection(callback, interval);
    }, interval);
    }
  },
  onMessageUnit: function(msg) {
    //接收新消息
  },
  onMessagePerson: function(msg) {
    //接收新消息
  },
  OnOpen: function() {
    //连接成功  默认订阅
    var exchange1 = "/exchange/" + mywebsocket.msConfig.info.changename + "/" +
    mywebsocket.msConfig.info.routingKey;
    this.WsObj.subscribe(exchange1, function(data) {
    var arr = data.headers.destination.split('/');
    if (arr[2] == mywebsocket.msConfig.info.changename) {
      var msg = data.body;
      console.log('接收到消息内容: ' + msg);
      mywebsocket.onMessageUnit(msg);
    }
    });
  },
  OnClose: function(e) {
    //连接关闭
    // this.WsObj = "";
    console.log("连接关闭")
    console.log(e);
    console.log("开始重连");
    mywebsocket.ConnSocket();
  },
  OnError: function() {
    //连接错误
    //console.log("连接错误")
  },
  CheckBrowser: function() {
    if (window.WebSocket) {
    return true == true;
    } else {
    return false;
    }
  },
  BusMsgTri: function(sender, content) {
    console.log("sender=" + sender + ",content=" + content);
  }
  };
  //对外暴露的接口
export default mywebsocket;

stomp.js

// Generated by CoffeeScript 1.7.1
/*
   Stomp Over WebSocket http://www.jmesnil.net/stomp-websocket/doc/ | Apache License V2.0
   Copyright (C) 2010-2013 [Jeff Mesnil](http://jmesnil.net/)
   Copyright (C) 2012 [FuseSource, Inc.](http://fusesource.com)
 */
(function() {
  var Byte, Client, Frame, Stomp,
    __hasProp = {}.hasOwnProperty,
    __slice = [].slice;
  Byte = {
    LF: '\x0A',
    NULL: '\x00'
  };
  Frame = (function() {
    var unmarshallSingle;
    function Frame(command, headers, body) {
      this.command = command;
      this.headers = headers != null ? headers : {};
      this.body = body != null ? body : '';
    }
    Frame.prototype.toString = function() {
      var lines, name, skipContentLength, value, _ref;
      lines = [this.command];
      skipContentLength = this.headers['content-length'] === false ? true : false;
      if (skipContentLength) {
        delete this.headers['content-length'];
      }
      _ref = this.headers;
      for (name in _ref) {
        if (!__hasProp.call(_ref, name)) continue;
        value = _ref[name];
        lines.push("" + name + ":" + value);
      }
      if (this.body && !skipContentLength) {
        lines.push("content-length:" + (Frame.sizeOfUTF8(this.body)));
      }
      lines.push(Byte.LF + this.body);
      return lines.join(Byte.LF);
    };
    Frame.sizeOfUTF8 = function(s) {
      if (s) {
        return encodeURI(s).match(/%..|./g).length;
      } else {
        return 0;
      }
    };
    unmarshallSingle = function(data) {
      var body, chr, command, divider, headerLines, headers, i, idx, len, line, start, trim, _i, _j, _len, _ref, _ref1;
      divider = data.search(RegExp("" + Byte.LF + Byte.LF));
      headerLines = data.substring(0, divider).split(Byte.LF);
      command = headerLines.shift();
      headers = {};
      trim = function(str) {
        return str.replace(/^\s+|\s+$/g, '');
      };
      _ref = headerLines.reverse();
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        line = _ref[_i];
        idx = line.indexOf(':');
        headers[trim(line.substring(0, idx))] = trim(line.substring(idx + 1));
      }
      body = '';
      start = divider + 2;
      if (headers['content-length']) {
        len = parseInt(headers['content-length']);
        body = ('' + data).substring(start, start + len);
      } else {
        chr = null;
        for (i = _j = start, _ref1 = data.length; start <= _ref1 ? _j < _ref1 : _j > _ref1; i = start <= _ref1 ? ++_j : --_j) {
          chr = data.charAt(i);
          if (chr === Byte.NULL) {
            break;
          }
          body += chr;
        }
      }
      return new Frame(command, headers, body);
    };
    Frame.unmarshall = function(datas) {
      var frame, frames, last_frame, r;
      frames = datas.split(RegExp("" + Byte.NULL + Byte.LF + "*"));
      r = {
        frames: [],
        partial: ''
      };
      r.frames = (function() {
        var _i, _len, _ref, _results;
        _ref = frames.slice(0, -1);
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          frame = _ref[_i];
          _results.push(unmarshallSingle(frame));
        }
        return _results;
      })();
      last_frame = frames.slice(-1)[0];
      if (last_frame === Byte.LF || (last_frame.search(RegExp("" + Byte.NULL + Byte.LF + "*$"))) !== -1) {
        r.frames.push(unmarshallSingle(last_frame));
      } else {
        r.partial = last_frame;
      }
      return r;
    };
    Frame.marshall = function(command, headers, body) {
      var frame;
      frame = new Frame(command, headers, body);
      return frame.toString() + Byte.NULL;
    };
    return Frame;
  })();
  Client = (function() {
    var now;
    function Client(ws) {
      this.ws = ws;
      this.ws.binaryType = "arraybuffer";
      this.counter = 0;
      this.connected = false;
      this.heartbeat = {
        outgoing: 10000,
        incoming: 10000
      };
      this.maxWebSocketFrameSize = 16 * 1024;
      this.subscriptions = {};
      this.partialData = '';
    }
    Client.prototype.debug = function(message) {
      var _ref;
      return typeof window !== "undefined" && window !== null ? (_ref = window.console) != null ? _ref.log(message) : void 0 : void 0;
    };
    now = function() {
      if (Date.now) {
        return Date.now();
      } else {
        return new Date().valueOf;
      }
    };
    Client.prototype._transmit = function(command, headers, body) {
      var out;
      out = Frame.marshall(command, headers, body);
      if (typeof this.debug === "function") {
        this.debug(">>> " + out);
      }
      while (true) {
        if (out.length > this.maxWebSocketFrameSize) {
          this.ws.send(out.substring(0, this.maxWebSocketFrameSize));
          out = out.substring(this.maxWebSocketFrameSize);
          if (typeof this.debug === "function") {
            this.debug("remaining = " + out.length);
          }
        } else {
          return this.ws.send(out);
        }
      }
    };
    Client.prototype._setupHeartbeat = function(headers) {
      var serverIncoming, serverOutgoing, ttl, v, _ref, _ref1;
      if ((_ref = headers.version) !== Stomp.VERSIONS.V1_1 && _ref !== Stomp.VERSIONS.V1_2) {
        return;
      }
      _ref1 = (function() {
        var _i, _len, _ref1, _results;
        _ref1 = headers['heart-beat'].split(",");
        _results = [];
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          v = _ref1[_i];
          _results.push(parseInt(v));
        }
        return _results;
      })(), serverOutgoing = _ref1[0], serverIncoming = _ref1[1];
      if (!(this.heartbeat.outgoing === 0 || serverIncoming === 0)) {
        ttl = Math.max(this.heartbeat.outgoing, serverIncoming);
        if (typeof this.debug === "function") {
          this.debug("send PING every " + ttl + "ms");
        }
        this.pinger = Stomp.setInterval(ttl, (function(_this) {
          return function() {
            _this.ws.send(Byte.LF);
            return typeof _this.debug === "function" ? _this.debug(">>> PING") : void 0;
          };
        })(this));
      }
      if (!(this.heartbeat.incoming === 0 || serverOutgoing === 0)) {
        ttl = Math.max(this.heartbeat.incoming, serverOutgoing);
        if (typeof this.debug === "function") {
          this.debug("check PONG every " + ttl + "ms");
        }
        return this.ponger = Stomp.setInterval(ttl, (function(_this) {
          return function() {
            var delta;
            delta = now() - _this.serverActivity;
            if (delta > ttl * 2) {
              if (typeof _this.debug === "function") {
                _this.debug("did not receive server activity for the last " + delta + "ms");
              }
              return _this.ws.close();
            }
          };
        })(this));
      }
    };
    Client.prototype._parseConnect = function() {
      var args, connectCallback, errorCallback, headers;
      args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
      headers = {};
      switch (args.length) {
        case 2:
          headers = args[0], connectCallback = args[1];
          break;
        case 3:
          if (args[1] instanceof Function) {
            headers = args[0], connectCallback = args[1], errorCallback = args[2];
          } else {
            headers.login = args[0], headers.passcode = args[1], connectCallback = args[2];
          }
          break;
        case 4:
          headers.login = args[0], headers.passcode = args[1], connectCallback = args[2], errorCallback = args[3];
          break;
        default:
          headers.login = args[0], headers.passcode = args[1], connectCallback = args[2], errorCallback = args[3], headers.host = args[4];
      }
      return [headers, connectCallback, errorCallback];
    };
    Client.prototype.connect = function() {
      var args, errorCallback, headers, out;
      args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
      out = this._parseConnect.apply(this, args);
      headers = out[0], this.connectCallback = out[1], errorCallback = out[2];
      if (typeof this.debug === "function") {
        this.debug("Opening Web Socket...");
      }
      this.ws.onmessage = (function(_this) {
        return function(evt) {
          var arr, c, client, data, frame, messageID, onreceive, subscription, unmarshalledData, _i, _len, _ref, _results;
          data = typeof ArrayBuffer !== 'undefined' && evt.data instanceof ArrayBuffer ? (arr = new Uint8Array(evt.data), typeof _this.debug === "function" ? _this.debug("--- got data length: " + arr.length) : void 0, ((function() {
            var _i, _len, _results;
            _results = [];
            for (_i = 0, _len = arr.length; _i < _len; _i++) {
              c = arr[_i];
              _results.push(String.fromCharCode(c));
            }
            return _results;
          })()).join('')) : evt.data;
          _this.serverActivity = now();
          if (data === Byte.LF) {
            if (typeof _this.debug === "function") {
              _this.debug("<<< PONG");
            }
            return;
          }
          if (typeof _this.debug === "function") {
            _this.debug("<<< " + data);
          }
          unmarshalledData = Frame.unmarshall(_this.partialData + data);
          _this.partialData = unmarshalledData.partial;
          _ref = unmarshalledData.frames;
          _results = [];
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            frame = _ref[_i];
            switch (frame.command) {
              case "CONNECTED":
                if (typeof _this.debug === "function") {
                  _this.debug("connected to server " + frame.headers.server);
                }
                _this.connected = true;
                _this._setupHeartbeat(frame.headers);
                _results.push(typeof _this.connectCallback === "function" ? _this.connectCallback(frame) : void 0);
                break;
              case "MESSAGE":
                subscription = frame.headers.subscription;
                onreceive = _this.subscriptions[subscription] || _this.onreceive;
                if (onreceive) {
                  client = _this;
                  messageID = frame.headers["message-id"];
                  frame.ack = function(headers) {
                    if (headers == null) {
                      headers = {};
                    }
                    return client.ack(messageID, subscription, headers);
                  };
                  frame.nack = function(headers) {
                    if (headers == null) {
                      headers = {};
                    }
                    return client.nack(messageID, subscription, headers);
                  };
                  _results.push(onreceive(frame));
                } else {
                  _results.push(typeof _this.debug === "function" ? _this.debug("Unhandled received MESSAGE: " + frame) : void 0);
                }
                break;
              case "RECEIPT":
                _results.push(typeof _this.onreceipt === "function" ? _this.onreceipt(frame) : void 0);
                break;
                case "ERROR": 
                _results.push(typeof errorCallback === "function" ? errorCallback(frame) : void 0);
                break;
                default:
                _results.push(typeof _this.debug === "function" ? _this.debug("Unhandled frame: " + frame) : void 0);
            }
          }
          return _results;
        };
      })(this);
        this.ws.onclose = (function (_this) {
          return function () {  
          var msg;
          msg = "Whoops! Lost connection to " + _this.ws.url;
          if (typeof _this.debug === "function") {
            _this.debug(msg);
              }
              this.ws = null;   
          _this._cleanUp();
          return typeof errorCallback === "function" ? errorCallback(msg) : void 0;
        };
      })(this);
      return this.ws.onopen = (function(_this) {
        return function() {
          if (typeof _this.debug === "function") {
            _this.debug('Web Socket Opened...');
          }
          headers["accept-version"] = Stomp.VERSIONS.supportedVersions();
          headers["heart-beat"] = [_this.heartbeat.outgoing, _this.heartbeat.incoming].join(',');
          return _this._transmit("CONNECT", headers);
        };
      })(this);
    };
    Client.prototype.disconnect = function(disconnectCallback, headers) {
      if (headers == null) {
        headers = {};
      }
      this._transmit("DISCONNECT", headers);
      this.ws.onclose = null;
      this.ws.close();
      this._cleanUp();
      return typeof disconnectCallback === "function" ? disconnectCallback() : void 0;
    };
    Client.prototype._cleanUp = function() {
      this.connected = false;
      if (this.pinger) {
        Stomp.clearInterval(this.pinger);
      }
      if (this.ponger) {
        return Stomp.clearInterval(this.ponger);
      }
    };
    Client.prototype.send = function(destination, headers, body) {
      if (headers == null) {
        headers = {};
      }
      if (body == null) {
        body = '';
      }
      headers.destination = destination;
      return this._transmit("SEND", headers, body);
    };
      Client.prototype.subscribe = function (destination, callback, headers) {
      var client;
      if (headers == null) {
        headers = {};
      }
      if (!headers.id) {
        headers.id = "sub-" + this.counter++;
      }
      headers.destination = destination;
      this.subscriptions[headers.id] = callback;
      this._transmit("SUBSCRIBE", headers);
      client = this;
      return {
        id: headers.id,
        unsubscribe: function() {
          return client.unsubscribe(headers.id);
        }
      };
    };
    Client.prototype.unsubscribe = function(id) {
      delete this.subscriptions[id];
      return this._transmit("UNSUBSCRIBE", {
        id: id
      });
    };
    Client.prototype.begin = function(transaction) {
      var client, txid;
      txid = transaction || "tx-" + this.counter++;
      this._transmit("BEGIN", {
        transaction: txid
      });
      client = this;
      return {
        id: txid,
        commit: function() {
          return client.commit(txid);
        },
        abort: function() {
          return client.abort(txid);
        }
      };
    };
    Client.prototype.commit = function(transaction) {
      return this._transmit("COMMIT", {
        transaction: transaction
      });
    };
    Client.prototype.abort = function(transaction) {
      return this._transmit("ABORT", {
        transaction: transaction
      });
    };
    Client.prototype.ack = function(messageID, subscription, headers) {
      if (headers == null) {
        headers = {};
      }
      headers["message-id"] = messageID;
      headers.subscription = subscription;
      return this._transmit("ACK", headers);
    };
    Client.prototype.nack = function(messageID, subscription, headers) {
      if (headers == null) {
        headers = {};
      }
      headers["message-id"] = messageID;
      headers.subscription = subscription;
      return this._transmit("NACK", headers);
    };
    return Client;
  })();
  Stomp = {
    VERSIONS: {
      V1_0: '1.0',
      V1_1: '1.1',
      V1_2: '1.2',
      supportedVersions: function() {
        return '1.1,1.0';
      }
    },
    client: function(url, protocols) {
      var klass, ws;
      if (protocols == null) {
        protocols = ['v10.stomp', 'v11.stomp'];
      }
      klass = Stomp.WebSocketClass || WebSocket;
      ws = new klass(url, protocols);
      return new Client(ws);
    },
    over: function(ws) {
      return new Client(ws);
    },
    Frame: Frame
  };
  if (typeof exports !== "undefined" && exports !== null) {
    exports.Stomp = Stomp;
  }
  if (typeof window !== "undefined" && window !== null) {
    Stomp.setInterval = function(interval, f) {
      return window.setInterval(f, interval);
    };
    Stomp.clearInterval = function(id) {
      return window.clearInterval(id);
    };
    window.Stomp = Stomp;
  } else if (!exports) {
    self.Stomp = Stomp;
  }
}).call(this);


测试


启动index页面

1673322079215.jpg

去我们的管理页面看看

1673322088325.jpg

再看我们的交换机

1673322097233.jpg


点击页面上的发送按钮发送几条消息,可以看到已经成功发出去 了

1673322108636.jpg

模拟服务端给我们发消息,测试我们的监听是否能正常收到发过来的消息

1673322120234.jpg

此时再看我们的页面,已经成功接收并将消息内容追加到页面

1673322130230.jpg

相关实践学习
消息队列RocketMQ版:基础消息收发功能体验
本实验场景介绍消息队列RocketMQ版的基础消息收发功能,涵盖实例创建、Topic、Group资源创建以及消息收发体验等基础功能模块。
消息队列 MNS 入门课程
1、消息队列MNS简介 本节课介绍消息队列的MNS的基础概念 2、消息队列MNS特性 本节课介绍消息队列的MNS的主要特性 3、MNS的最佳实践及场景应用 本节课介绍消息队列的MNS的最佳实践及场景应用案例 4、手把手系列:消息队列MNS实操讲 本节课介绍消息队列的MNS的实际操作演示 5、动手实验:基于MNS,0基础轻松构建 Web Client 本节课带您一起基于MNS,0基础轻松构建 Web Client
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