简介：
本来使用websocket，后端同事使用了stomp协议，导致前端也需要对应修改。
如何使用
在static/js中新建stomp.js和websocket.js，然后在需要使用的页面引入监听代码+发送代码即可
代码如下：
位置：项目/pages/static/js/stomp.js
1.stomp.js
javascript
// 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._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);位置：项目/pages/static/js/websocket.js
2.websocket.js
javascript
const Stomp = require('./stomp.js').Stomp;
let socketOpen = false
let socketMsgQueue = []
export default {
client: null,
init(url, header ,connectWS) {
if (this.client) {
return Promise.resolve(this.client)
}
return new Promise((resolve, reject) => {
const ws = {
send: this.sendMessage,
onopen: null,
onmessage: null,
close: this.closeSocket,
}
wx.connectSocket({ url, header })
wx.onSocketOpen(function (res) {
console.log('WebSocket连接已打开！', res)
socketOpen = true
for (let i = 0; i < socketMsgQueue.length; i++) {
ws.send(socketMsgQueue[i])
}
socketMsgQueue = []
ws.onopen && ws.onopen()
})
wx.onSocketMessage(function (res) {
ws.onmessage && ws.onmessage(res)
})
wx.onSocketError(function (res) {
console.log('WebSocket 错误！', res)
})
wx.onSocketClose((res) => {
this.client.disconnect()
this.client = null
socketOpen = false
console.log('WebSocket 已关闭！', res)
setTimeout(()=>{
connectWS()
},3000)
})
Stomp.setInterval = function (interval, f) {
return setInterval(f, interval)
}
Stomp.clearInterval = function (id) {
return clearInterval(id)
}
const client = (this.client = Stomp.over(ws))
client.connect(header, function () {
console.log('stomp connected')
resolve(client)
})
})
},
disconnect() {
wx.closeSocket()
},
sendMessage(message) {
if (socketOpen) {
wx.sendSocketMessage({
data: message,
})
} else {
socketMsgQueue.push(message)
}
},
closeSocket() {
console.log('closeSocket')
},
}3.监听+发送代码
javascript
import WebSocket from "../../static/js/websocket"
const app = getApp();
data： {
objUid: '1',
client: null,
content: '发送的内容'
},
onLoad(options) {
// stomp协议请求
this.initWS()
},
initWS() {
WebSocket.init(
`${app.globalData.WSURL}/chat`,
// 传参
{
// login: 'admin',
// passcode: 'admin',
},
// ws断开回调
() => {
this.initWS()
}
).then((client) => {
this.setData({
client: client
})
// 订阅
client.subscribe(
// 路径
`/response/${app.globalData.uid}/${this.data.objUid}`,
// 接收到的数据
(res) => {
console.log(res)
},
// 消息不会被确认接收，不确认每次连接都会推送
// { ack: 'client' }
)
})
},
// 直接调用发送即可
send() {
this.data.client.send(
// 路径
`/child/${app.globalData.uid}/${this.data.objUid}`,
// 自定义参数 http://jmesnil.net/stomp-websocket/doc/
{},//priority: 9
// 发送文本
JSON.stringify({ 'content': this.data.content })
);
},