node.js + express + socket.io 无法将 javascript 文件加载到 index.html [英] node.js + express + socket.io cannot load javascript files into index.html
问题描述
我正在开发一个应用程序，服务器目前已设置好并且运行良好.
I'm developing an application and the server is currently set up and working well.
这是访问服务器时显示的index.html:
This is the index.html that shows when you access the server:
<!doctype html>
<html>
<head>
<title>Socket.IO chat</title>
</head>
<body>
<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script type="text/javascript" src="./client.js"></script>
<script type="text/javascript" src="./main.js"></script>
</body>
</html>
但是，在导入位于同一目录中的那些 javascript 文件时，我收到 404 错误无法加载资源:服务器响应状态为 404(未找到)".
However I get a 404 error "Failed to load resource: the server responded with a status of 404 (Not Found)" when importing those javascript files, which are in the same directory.
这是我的服务器代码:
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
app.get('/', function(req, res){
res.sendFile(__dirname+'/index.html'); // DO I NEED TO SEND THE OTHER FILES HERE ASWELL?
});
io.on('connection', function(socket){
console.log('a user connected');
socket.on('disconnect', function(){
console.log('user disconnected');
});
socket.on('chat message', function(msg){
console.log('message: ' + msg);
io.emit('chat message', msg);
});
});
http.listen(3000, function(){
console.log('listening on *:3000');
});
谢谢！
推荐答案
如果 HTML 文件与脚本位于同一路径，则使用相对路径，如 src = "main.js".如果还是不行，可能是快递的问题.
If the HTML file is located in the same path as the scripts are, then use relative path like src = "main.js". If it still doesn't work, maybe it's Express' fault.
将以下代码添加到您的 app.js 中:
Add the codes below into your app.js:
app.use(express.static(__dirname + '/scripts'));
并且可以从相对于 /scripts 的路径访问脚本 - eg main.js from http://yourdomain/script.js 但不是来自 http://yourdomain/scripts/main.js.对不起我的英语.
And the scripts can be accessed from the path relative to /scripts- e.g. main.js from http://yourdomain/script.js but not from http://yourdomain/scripts/main.js.
Sorry for my English.
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