cbr*_*bra 1 html javascript notifications
我正在尝试构建一个表单，在提交时发送包含填充数据的通知。当我运行代码时，它在控制台上显示此错误
polling-xhr.js:229 GET http://localhost:3000/socket.io/?EIO=4&transport=polling&t=NMtL4rR net::ERR_CONNECTION_REFUSED
这个错误看起来像是溢出
这是我的代码
管理.html
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css"
integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2"
crossorigin="anonymous">
<title>Hello, admin</title>
</head>
<body>
<div class="container" style="max-width: 500px;">
<div style="margin-top: 40px;"></div>
<h1>Send Notification</h1>
<form>
<div class="form-group">
<label for="name">name</label>
<input type="text" class="form-control" id="name" aria-describedby="emailHelp">
</div>
<div class="form-group">
<label for="profession">profession</label>
<input type="text" class="form-control" id="profession" aria-describedby="emailHelp">
</div>
<div class="form-group">
<label for="email">Email address</label>
<input type="email" class="form-control" id="email" aria-describedby="emailHelp">
</div>
<button type="button" id="sendNotification" class="btn btn-primary">Submit</button>
</form>
</div>
<!-- Optional JavaScript; choose one of the two! -->
<!-- Option 1: jQuery and Bootstrap Bundle (includes Popper) -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-
DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx"
crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/3.0.1/socket.io.js"></script>
<script type="text/javascript">
var socket = io("http://localhost:3000");
$( "#sendNotification" ).click(function() {
var name = $( "#name" ).val()
var profession = $( "#profession" ).val()
var email = $( "#email" ).val()
socket.emit("sendNotification" ,{
"name" : name,
"profession" : profession,
"email" : email
});
});
</script>
</body>
</html>
用户.html
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css"
integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2"
crossorigin="anonymous">
<title>Hello, user</title>
</head>
<body>
<div class="container" style="max-width: 500px;">
<div style="margin-top: 40px;"></div>
<h1>Get Notification</h1>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/3.0.1/socket.io.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/notify/0.4.2/notify.js"></script>
<script type="text/javascript">
var socket = io("http://localhost:3000");
socket.on("sendNotification", function(details){
$.notify("Name :"+details.name, {
autoHide : false,
className : "success"
});
});
</script>
<!-- Option 2: jQuery, Popper.js, and Bootstrap JS
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-
DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-
9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.min.js"
integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s"
crossorigin="anonymous"></script>
-->
</body>
</html>
服务器.js
var express = require("express");
var app = express();
var http = require("http").createServer(app);
var io = require("socket.io")(http);
http.listen(3000, function(){
console.log("Successfully Connected Node Server");
io.on("connection", function(socket){
console.log("Auth value: " + socket.id);
socket.on("sendNotification", function(details){
socket.broadcast.emit("sendNotification", details);
});
});
});
包.json
{
"name": "notification-server",
"version": "1.0.0",
"description": "Notification",
"main": "index.js",
"scripts": {
"test": "none"
},
"repository": {
"type": "git",
"url": "none"
},
"keywords": [
"none"
],
"author": "cbra",
"license": "MIT",
"dependencies": {
"express": "^4.17.1",
"http": "0.0.1-security",
"socket.io": "^3.0.1"
}
}
我必须在这里改变什么？
我认为你需要一个CORS模块。有两种方法
npm install cors
// server.js
...
app.use(require('cors')())
...
const io = require("socket.io")(http, {
cors: {
origin: "http://localhost:4200",
methods: ["GET", "POST"]
}
})
http.listen(3000)
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