rabbitMq动态创建和监听队列
背景
在与第三方业务员系统对接时，需要根据第三方的信息的进行队列的创建，且个数不定，这就造成使用@RabbitListener来添加监听不方便。本文采用了当业务需要时，动态的创建队列和监听队列的方式，适合某个任务为一组的队列方式，需要考虑队列使用完成后的处理方式。
引入jar
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId></dependency>application.properties
// mq相关配置,简单使用rabbitmq只需配置以下几个配置项即可使用spring.rabbitmq.host=124.222.229.252spring.rabbitmq.port=15677spring.rabbitmq.username=guestspring.rabbitmq.password=guest生产者端
封装方法，动态创建队列
@Autowired private AmqpAdmin amqpAdmin; @Override public void createQueue(String queueName) { //判断队列是否存在 if (!isExistQueue(queueName)) { //创建队列 amqpAdmin.declareQueue(new Queue(queueName, true)); } logger.info("创建队列:{}成功",queueName); } public boolean isExistQueue(String queueName){ boolean flag = true; if(StringUtils.isNotBlank(queueName)){ Properties queueProperties = amqpAdmin.getQueueProperties(queueName); if (queueProperties == null) { flag = false; } }else { throw new RuntimeException("队列名称为空"); } return flag; }往指定队列发送消息
@Autowired private RabbitTemplate rabbitTemplate; @Override public void sendMessage(String queueName, String tatus) { if(!isExistQueue(queueName)){ throw new RuntimeException("发送消息失败，队列为空"); } //定义业务消息实体 SignTaskMessageVo messageVo = new SignTaskMessageVo(); messageVo.setTaskId(queueName); messageVo.setStatus(taskStatus); messageVo.setSendTime(DateUtils.getCurrentTime()); //往指定队列发送消息 rabbitTemplate.convertAndSend(queueName, JSONObject.toJSONString(messageVo)); logger.info("发送消息成功:{}", messageVo); }消费者端
java动态添加监听的队列
配置类
@Configurationpublic class RabbitConfig { @Bean public SimpleMessageListenerContainer messageContainer(ConnectionFactory connectionFactory) { SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(connectionFactory); return container; }} 消息监听处理类
@Componentpublic class MessageListenerImpl implements MessageListener { private static final Logger logger = LoggerFactory.getLogger(MessageListenerImpl.class); @Override public void onMessage(Message message) { try { String mes = new String(message.getBody(), "utf-8"); logger.info("监听到消息:{}",mes); //todo 业务处理 } catch (UnsupportedEncodingException e) { e.printStackTrace(); } }}动态添加监听
@Autowired private SimpleMessageListenerContainer container; @Autowired private MessageListenerImpl message;@Override public void addListener(String queueName) { //获取当前监听的队列名称 String[] strings=container.getQueueNames(); List<String> list=Arrays.asList(strings); if (!list.contains(queueName)) { container.addQueueNames(queueName); //设置消息监听处理类 container.setMessageListener(message); } }前端js监听并消费
引入stomp.js(cv大法或者自己引入)
// Generated by CoffeeScript 1.7.1(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 data; return (function() { var _i, _len, _ref, _results; _ref = datas.split(RegExp("" + Byte.NULL + Byte.LF + "*")); _results = []; for (_i = 0, _len = _ref.length; _i < _len; _i++) { data = _ref[_i]; if ((data != null ? data.length : void 0) > 0) { _results.push(unmarshallSingle(data)); } } return _results; })(); }; 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 = {}; } 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, _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); } _ref = Frame.unmarshall(data); _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._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);index.html代码示例
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>消费者示例</title> //需要引入stomp.js <script src="./stomp.js"></script></head><body>监听到的消息:<span id ="dataId"> </span><br> <script> var queueName = "ceshi-1";//获取到的队列名称 // 初始化 ws 对象，需要rabbitMq开放协议，并监听ws端口号 var ws = new WebSocket('ws://124.222.229.252:15674/ws'); // 获得Stomp client对象 var client = Stomp.over(ws); // 指定适当的心跳参数保持长时间稳定连接 client.heartbeat.outgoing = 10000; client.heartbeat.incoming = 10000; // 定义连接成功回调函数 var on_connect = function (x) { //订阅名为 xxx队列中的消息 ，并手动消费 client.subscribe(queueName, function (data) { var msg = data.body; console.log("收到数据：" + msg); data.ack(); document.getElementById("dataId").innerText=msg; },{ack:'client'});//由客户端确认已经收到消息 }; //定义连接成功回调函数 // 定义错误时回调函数 var on_error = function () { console.log('error'); }; // 连接RabbitMQ client.connect('guest', 'guest', on_connect, on_error, '/'); //向名为debugQueue的队列中发送消息 ，并指定routingKey //程序退出时候，断开连接 //client.disconnect(); </script></body></html>打开index.html
来源地址：https://blog.csdn.net/qq_42223485/article/details/130052546
