我嘗試使用 socket.io 從路由檔案中發出資料，但當我呼叫路由時它很糟糕。
獲取引號時出錯無法讀取未定義的屬性（讀取 'emit'） TypeError：無法讀取未定義的屬性（讀取 'emit'）
有誰知道為什么會這樣？
謝謝。
應用程式
const express = require('express');
const io = require("socket.io");
const indexRouter = require('./routes');
const quotesRouter = require('./routes/quotes');
const app = express();
const listener = app.listen(3001, () => console.log("Listening..."));
const socketsManager = io(listener, {cors: {origin: "*"}});
socketsManager.sockets.on("connection", (socket: any) => {
console.log("One client has been connected. Total clients: " socketsManager.engine.clientsCount);
// Listen to disconnect event from the connected client:
socket.on("disconnect", () => {
console.log("A specific client has been disconnected. Total clients: " (socketsManager.engine.clientsCount - 1));
});
socket.on("getQuotes", (quotes: Quote[]) => {
socket.emit('getQuotes', quotes);
});
});
app.set('socketio', io);
app.use(express.json());
app.use(express.urlencoded({extended: false}));
app.use('/', indexRouter);
app.use('/quotes', quotesRouter);
module.exports = app;
quotes.ts（路由檔案）
import {NextFunction, Request, Response} from 'express';
const app = require('../app');
const express = require('express');
const router = express.Router();
const quotes = require('../services/quotes');
router.get('/', async function (req: Request, res: Response, next: NextFunction) {
try {
let io = req.app.get('socketio');
io.sockets.emit('getQuotes',await quotes.getMultiple(req.query.page));
// res.status(200).json(await quotes.getMultiple(req.query.page));
} catch (err: any) {
console.error(`Error while getting quotes `, err.message);
next(err);
}
});
module.exports = router;
uj5u.com熱心網友回復：
看起來您為socketio分配了錯誤的值。io您需要的socketsManager是初始化的套接字實體，而不是分配
const socketsManager = io(listener, {cors: {origin: "*"}});
所以，socketio像這樣更新你的變數定義，
app.set('socketio', socketsManager);
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/364400.html
標籤：javascript 节点.js 表达 socket.io