场景: 创建一个Node API(GET),在socket.io Node服务器中调用该API,并在angular客户端中调用此socket服务器。
我所做的:创建了一个用于get请求和post请求的Node API,创建了一个socket服务器,我尝试消耗这个应用程序。
问题:1. 我尝试使用API,但无法在socket服务器中获取数据;2. 如果它可以工作,如何在Angular应用程序中通过按钮单击获取套接字数据?
注意:我在3000服务器上运行Node API,并在3001上运行套接字服务器。
以下是我的代码:
运行在3000端口的Node API代码:
const express = require('express')
const bodyParser = require('body-parser');
const cors = require('cors');
const app = express()
const port = 3000
let books = [{
"isbn": "9781593275846",
"title": "Eloquent JavaScript, Second Edition",
"author": "Marijn Haverbeke",
"publish_date": "2014-12-14",
"publisher": "No Starch Press",
"numOfPages": 472,
}];
app.use(cors());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.post('/book', (req, res) => {
const book = req.body;
// output the book to the console for debugging
console.log(book);
books.push(book);
res.send('Book is added to the database');
});
app.get('/book', (req, res) => {
res.json(books);
});
app.listen(port, () => console.log(`Hello world app listening on port ${port}!`));
Socket .io 服务器运行在 3001 端口
var app = require('express')();
var http = require('http').createServer(app);
var io = require('socket.io')(http);
const apiUrl="http://localhost:3000/book"
io.on('connection', function (socket) {
socket.on('getBanners', function(data){
request.get(apiUrl,function (error, response, body){
console.log(body)
socket.emit('result', {res:JSON.parse(body)})
})
});
});
http.listen(3001, function(){
console.log('listening on *:3001');
});
注意:Node API服务器 --> socketio服务器(不是客户端)。