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WEB WEB2 - Node.js - Express - 라우터

페이지 정보

작성자 관리자 댓글 0건 조회 2,818회 작성일 20-06-03 15:58

본문

라우터

수업소개

관리하는 페이지가 많아짐에 따라서 코드의 복잡도가 급격히 높아지게 됩니다. 복잡도를 낮추는 방법이 라우터입니다. 라우터를 알아봅시다.

 

 

 

강의1

라우터를 살펴보기 전에 기존 앱의 주소체계를 변경하는 작업을 합시다. 

 

 

 

소스코드

변경사항

main.js

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var express = require('express')
var app = express()
var fs = require('fs');
var path = require('path');
var qs = require('querystring');
var bodyParser = require('body-parser');
var sanitizeHtml = require('sanitize-html');
var compression = require('compression')
var template = require('./lib/template.js');
app.use(express.static('public'));
app.use(bodyParser.urlencoded({ extended: false }));
app.use(compression());
app.get('*', function(request, response, next){
fs.readdir('./data', function(error, filelist){
request.list = filelist;
next();
});
});
//route, routing
//app.get('/', (req, res) => res.send('Hello World!'))
app.get('/', function(request, response) {
var title = 'Welcome';
var description = 'Hello, Node.js';
var list = template.list(request.list);
var html = template.HTML(title, list,
`
<h2>${title}</h2>${description}
<img src="/images/hello.jpg" style="width:300px; display:block; margin-top:10px;">
`,
`<a href="/topic/create">create</a>`
);
response.send(html);
});
app.get('/topic/create', function(request, response){
var title = 'WEB - create';
var list = template.list(request.list);
var html = template.HTML(title, list, `
<form action="/topic/create_process" method="post">
<p><input type="text" name="title" placeholder="title"></p>
<p>
<textarea name="description" placeholder="description"></textarea>
</p>
<p>
<input type="submit">
</p>
</form>
`, '');
response.send(html);
});
app.post('/topic/create_process', function(request, response){
var post = request.body;
var title = post.title;
var description = post.description;
fs.writeFile(`data/${title}`, description, 'utf8', function(err){
response.redirect(`/topic/${title}`);
});
});
app.get('/topic/update/:pageId', function(request, response){
var filteredId = path.parse(request.params.pageId).base;
fs.readFile(`data/${filteredId}`, 'utf8', function(err, description){
var title = request.params.pageId;
var list = template.list(request.list);
var html = template.HTML(title, list,
`
<form action="/topic/update_process" method="post">
<input type="hidden" name="id" value="${title}">
<p><input type="text" name="title" placeholder="title" value="${title}"></p>
<p>
<textarea name="description" placeholder="description">${description}</textarea>
</p>
<p>
<input type="submit">
</p>
</form>
`,
`<a href="/topic/create">create</a> <a href="/topic/update/${title}">update</a>`
);
response.send(html);
});
});
app.post('/topic/update_process', function(request, response){
var post = request.body;
var id = post.id;
var title = post.title;
var description = post.description;
fs.rename(`data/${id}`, `data/${title}`, function(error){
fs.writeFile(`data/${title}`, description, 'utf8', function(err){
response.redirect(`/topic/${title}`);
})
});
});
app.post('/topic/delete_process', function(request, response){
var post = request.body;
var id = post.id;
var filteredId = path.parse(id).base;
fs.unlink(`data/${filteredId}`, function(error){
response.redirect('/');
});
});
app.get('/topic/:pageId', function(request, response, next) {
var filteredId = path.parse(request.params.pageId).base;
fs.readFile(`data/${filteredId}`, 'utf8', function(err, description){
if(err){
next(err);
} else {
var title = request.params.pageId;
var sanitizedTitle = sanitizeHtml(title);
var sanitizedDescription = sanitizeHtml(description, {
allowedTags:['h1']
});
var list = template.list(request.list);
var html = template.HTML(sanitizedTitle, list,
`<h2>${sanitizedTitle}</h2>${sanitizedDescription}`,
` <a href="/topic/create">create</a>
<a href="/topic/update/${sanitizedTitle}">update</a>
<form action="/topic/delete_process" method="post">
<input type="hidden" name="id" value="${sanitizedTitle}">
<input type="submit" value="delete">
</form>`
);
response.send(html);
}
});
});
app.use(function(req, res, next) {
res.status(404).send('Sorry cant find that!');
});
app.use(function (err, req, res, next) {
console.error(err.stack)
res.status(500).send('Something broke!')
});
app.listen(3000, function() {
console.log('Example app listening on port 3000!')
});

 

template.js

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module.exports = {
HTML:function(title, list, body, control){
return `
<!doctype html>
<html>
<head>
<title>WEB1 - ${title}</title>
<meta charset="utf-8">
</head>
<body>
<h1><a href="/">WEB</a></h1>
${list}
${control}
${body}
</body>
</html>
`;
},list:function(filelist){
var list = '<ul>';
var i = 0;
while(i < filelist.length){
list = list + `<li><a href="/topic/${filelist[i]}">${filelist[i]}</a></li>`;
i = i + 1;
}
list = list+'</ul>';
return list;
}
}

 

 

 

강의2

라우터를 만들어서 파일로 분리

 

 

 

소스코드 

변경사항

main.js

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var express = require('express');
var app = express();
var fs = require('fs');
var path = require('path');
var qs = require('querystring');
var bodyParser = require('body-parser');
var sanitizeHtml = require('sanitize-html');
var compression = require('compression')
var template = require('./lib/template.js');
var topicRouter = require('./routes/topic');
app.use(express.static('public'));
app.use(bodyParser.urlencoded({ extended: false }));
app.use(compression());
app.get('*', function(request, response, next){
fs.readdir('./data', function(error, filelist){
request.list = filelist;
next();
});
});
app.use('/topic', topicRouter);
//route, routing
//app.get('/', (req, res) => res.send('Hello World!'))
app.get('/', function(request, response) {
var title = 'Welcome';
var description = 'Hello, Node.js';
var list = template.list(request.list);
var html = template.HTML(title, list,
`
<h2>${title}</h2>${description}
<img src="/images/hello.jpg" style="width:300px; display:block; margin-top:10px;">
`,
`<a href="/topic/create">create</a>`
);
response.send(html);
});

 

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