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如何将 CSS 导入 node.js 服务器?

[英]How can you import CSS into a node.js server?

Say you have a CSS file with the code:假设您有一个带有代码的 CSS 文件:

body{
    margin:0px;
}

And the HTML file index.html.以及 HTML 文件 index.html。 How could you create a server that takes index.html and adds the CSS?您如何创建一个接受 index.html 并添加 CSS 的服务器? Edit:编辑:

var http = require('http');
var fs = require('fs');

function sendFile(res, filename, type) {
    fs.readFile(filename, function(err, data) {
        if (err) {
            console.log(err);
            res.statusCode = 404;
            res.end();
            return
                ;
        }
        res.writeHead(200, { 'Content-Type': type });
        res.write(data);
        res.end();
    });
}

http.createServer(function(req, res) {
    if (req.url == "/") {
        sendFile(res, "index.html", "text/html");
    } 
    else if (req.url == "/styles.css") {
        sendFile(res, "styles.css", "text/css");
    } 
    else {
        res.statusCode = 404;
        res.end();
    }
}).listen(8080);

This stuff is a lot simpler with a simple framework like Express where you can configure it to automatically serve a directory of static files.使用像 Express 这样的简单框架,这些东西要简单得多,您可以将其配置为自动提供静态文件目录。

But, if you want to do it yourself using only the built-in http object, you can do something like this:但是,如果你想自己使用内置的 http 对象,你可以这样做:

const http = require('http');
const fs = require('fs');

function sendFile(res, filename, type) {
    fs.readFile(filename, function(err, data) {
        if (err) {
            console.log(err);
            res.statusCode = 404;
            res.end();
            return;
        }
        res.writeHead(200, { 'Content-Type': type });
        res.write(data);
        res.end();
    });
}

http.createServer(function(req, res) {
    if (req.url === "/") {
        sendFile(res, "index.html", "text/html");
    } else if (req.url === "/styles.css") {
        sendFile(res, "styles.css", "text/css");
    } else {
        res.statusCode = 404;
        res.end();
    }
}).listen(8080);

Then, inside of index.html , you can have:然后,在index.html中,您可以拥有:

<html>
<head>
<link href="/styles.css"  rel="stylesheet">
</head>
<body>
    <div class="red">This is some text that is supposed to be red</div>
</body>
</html>

In styles.css , you can have:styles.css ,您可以拥有:

.red {
    color: red;
}

That will cause the browser to request /styles.css and your web server will be configured to serve that file for that request.这将导致浏览器请求/styles.css并且您的 Web 服务器将被配置为为该请求提供该文件。

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