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。
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
登录web管理页面：http://localhost:15672/ 新建一个交换机
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
去我们的管理页面看看
再看我们的交换机
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
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
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
本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
原始发表：2022-06-22，如有侵权请联系 cloudcommunity@tencent.com 删除
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