尝试一发Node.js
不论说啥，反正就是没工作_(:3 JZ)_
来来来，不如折腾点项目玩耍。
久闻Node.js大名，然后各种事件驱动的黑魔法，于是来玩耍一发。
环境准备
吾用Mint15，源内有Node.js的包，但是安装之后各种不科学不魔法的事情出现，把node的路径加到$PATH，更改alias，啥啥……不干了！直接去编译了一发，让CPU飞了一小会，done！
$ node -v
v0.10.26
$ npm -v
1.4.3
试
看了BYVoid的《Node.js开发指南》，对Node.js有了个大概的了解，各种callback以前也接触过，于是可以试一试的说～
然后express创建个应用
$ express -e myapp3
create : myapp3
create : myapp3/package.json
create : myapp3/app.js
create : myapp3/public
create : myapp3/public/javascripts
create : myapp3/public/stylesheets
create : myapp3/public/stylesheets/style.css
create : myapp3/routes
create : myapp3/routes/index.js
create : myapp3/routes/users.js
create : myapp3/views
create : myapp3/views/index.ejs
create : myapp3/views/error.ejs
create : myapp3/bin
create : myapp3/bin/www
create : myapp3/public/images
install dependencies:
$ cd myapp3 && npm install
run the app:
$ DEBUG=my-application ./bin/www
好啦就创建完成了，npm install解决掉依赖包的问题。
用npm start让它们跑起来（看过的资料和书中都写的是node app.js让它们跑起来，express的guide写npm start，这俩的区别在于npm start会先扫描一遍package.json，在满足依赖的前提下跑，node app.js只是读取app.js内的东西，让其跑起来）
$ curl localhost:3000
<!DOCTYPE html><html><head><title>Express</title><link rel="stylesheet" href="/stylesheets/style.css"></head><body><h1>Express</h1><p>Welcome to Express</p></body></html>
成功！
$ ls
app.js bin node_modules package.json public routes views
app.js是project的入口
blahblah（routes下的转发，public下的静态文件，views下的显示页面，node_modules下的依赖包）
添加一个页面
这货是MVC模式，添加一个页面也就相当于添加转发规则，添加一个页面
在app.js里添加
app.get('/login', routes.login);
在routes下添加转发规则
var express = require('express');
var router = express.Router();
router.get('/hello', function(req, res) {
res.render('hello', { title: 'hello' });
});
module.exports = router;
修改app.js里使用view engine的类型
app.engine('.html', ejs.__express);
app.set('view engine', 'html');
添加hello.html页面
<% include header.html %>
<h1> Welcome ! </h1>
<% include footer.html %>
header.html和footer.html分别写了
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title><%=: title %></title>
<!-- Bootstrap -->
<link href="/stylesheets/bootstrap.min.css" rel="stylesheet" media="screen">
</head>
<body screen_capture_injected="true">
<script src="/javascripts/bootstrap.min.js"></script>
</body>
</html>
重启
然后就可以啦
总结
学习node+express重新复习MVC这种framework，各种callback横行，各种错误还不好调= =。。。总之让它跑起来容易，让它按照我的旨意跑起来就_(:3 JZ)_
还有就是加转发规则的时候遇到的
这个是正确的：router.get('/', function(){}); module.exports = router;
但是这个就是错误的：exports.router = function(){};
虽然我经常看没有文档的东西（好了我不吐槽上个东家了），但是这个文档实在是让初学者很摸不到头脑的说，目前查到的书和资料，手动试的时候发现是不可以用的，而且。。。也没过时很久的说。。。好了，我还是不吐槽了，接着看代码去blahblah
Sep 16, 2022 10:36:48 PM
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