如何使用 nodejs 启动服务器？
[英]How do I start a server using nodejs?
问题描述
I started learning nodejs and stopped at the lesson where the server is created, here is the code for this script:
我开始学习 nodejs 并在创建服务器的课程中停止，这是此脚本的代码：
var http = require('http'); // Import Node.js core module
var server = http.createServer(function (req, res) { //create web server
if (req.url == '/') { //check the URL of the current request
// set response header
res.writeHead(200, { 'Content-Type': 'text/html' });
// set response content
res.write('<html><body><p>This is home Page.</p></body></html>');
res.end();
}
else if (req.url == "/student") {
res.writeHead(200, { 'Content-Type': 'text/html' });
res.write('<html><body><p>This is student Page.</p></body></html>');
res.end();
}
else if (req.url == "/admin") {
res.writeHead(200, { 'Content-Type': 'text/html' });
res.write('<html><body><p>This is admin Page.</p></body></html>');
res.end();
}
else
res.end('Invalid Request!');
});
server.listen(5000); //6 - listen for any incoming requests
console.log('Node.js web server at port 5000 is running..')
I experiment on a remote machine (google cloud virtual machine), run the script using node (I see a message in the console that the server is running) but if I go to the IP address through the browser (for example http://92.233.12.12:5000/ ) I don't I see the result, what am I doing wrong?我在远程机器（谷歌云虚拟机）上进行实验，使用 node 运行脚本（我在控制台中看到服务器正在运行的消息）但是如果我通过浏览器访问 IP 地址（例如http:// 92.233.12.12:5000/ ) 我没有看到结果，我做错了什么？ did not find any additional information, everywhere in the lessons access through localhost:5000/ ...没有找到任何额外的信息，在课程中到处都是通过localhost:5000/访问...
2 个解决方案
解决方案1
0 2020-09-09 16:27:52
res.write('<html><body><p>This is admin Page.</p></body></html>');
res.end();
You can also do the following:您还可以执行以下操作：
res.end('<html><body><p>This is admin Page.</p></body></html>');
解决方案2
0 2020-09-09 16:48:34
Please check if you are able to telnet the port 5000 for the remote server IP from your laptop terminal.请检查您是否能够从您的笔记本电脑终端 telnet 远程服务器 IP 的端口 5000。 It could be that a firewall is blocking the port for the outside access.可能是防火墙阻止了外部访问的端口。 If you want to check this on the server side you can login to the google machine and from the terminal of the server try curl http://localhost:5000 and if you see the response , then it should be the firewall.如果你想在服务器端检查这个，你可以登录谷歌机器并从服务器的终端尝试 curl http://localhost:5000 ，如果你看到响应，那么它应该是防火墙。
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