標籤：style blog http io ar os sp java for
主要是想用node.js連結mongodb，用的是mongoose。用ejs引擎，擴充到.html比較容易
小例子結構簡單，架構清晰。
| 提交方法 | 路徑 | 方法 | 作用 |
| get | add | ||
| post | add | 提交記錄 | |
| get | del | ||
| get | modify | 轉到修改頁面 | |
| post | modify | 修改記錄 |
入口：mongodb.js,資料模型：model.js,(這兩個在同一級目錄) 路由：mong_ro.js（引入model.js用../）
三個頁面index.html,add.html,modify.html
mongodb.js：
var express = require(‘express‘);var path = require(‘path‘);var favicon = require(‘serve-favicon‘);var logger = require(‘morgan‘);var cookieParser = require(‘cookie-parser‘);var bodyParser = require(‘body-parser‘);var routes = require(‘./routes/mong_ro‘);var users = require(‘./routes/users‘);var app = express();// view engine setupapp.set(‘views‘, path.join(__dirname, ‘views‘));app.set(‘view engine‘, ‘ejs‘);app.engine(‘html‘, require(‘ejs‘).renderFile);// uncomment after placing your favicon in /public// app.use(favicon(__dirname + ‘/public/favicon.ico‘));app.use(logger(‘dev‘));app.use(bodyParser.json());app.use(bodyParser.urlencoded({ extended: false }));app.use(cookieParser());app.use(express.static(path.join(__dirname, ‘public‘)));app.use(‘/‘, routes);app.use(‘/users‘, users);// catch 404 and forward to error handlerapp.use(function(req, res, next) { var err = new Error(‘Not Found‘); err.status = 404; next(err);});// error handlers// development error handler// will print stacktraceif (app.get(‘env‘) === ‘development‘) { app.use(function(err, req, res, next) { res.status(err.status || 500); res.render(‘error‘, { message: err.message, error: err }); });}// production error handler// no stacktraces leaked to userapp.use(function(err, req, res, next) { res.status(err.status || 500); res.render(‘error‘, { message: err.message, error: {} });});module.exports = app;
model.js:
var express = require(‘express‘), routes = require(‘./routes‘), mongoose = require(‘mongoose‘), Schema = mongoose.Schema;var demoSchema = new Schema({uid: String,title: String,content: String,createTime: {type:Date, default: Date.now}});exports.Demo = mongoose.model(‘blog‘, demoSchema);
mong_ro.js:
var express = require(‘express‘) , router = express.Router(), mongoose = require(‘mongoose‘), model = require(‘../model‘), Demo = model.Demo;mongoose.connect(‘mongodb://localhost/blog‘);/* GET home page. */// router.get(‘/‘, function(req, res) {// res.render(‘index‘, { title: ‘Express‘ });// });router.get(‘/‘, function(req, res) { Demo.find(function(err, docs){res.render(‘index.html‘, {title:‘Express Demo Example‘,demos:docs});});});router.get(‘/add‘, function(req, res) { res.render(‘add.html‘, {title:‘add demo list‘});});router.post(‘/add‘, function(req, res) { var demo = new Demo({uid: req.body.uid,title: req.body.title,content: req.body.content});demo.save(function(err, doc){res.redirect(‘/‘);})});router.get(‘/del‘, function(req, res){var id = req.query.id;if(id && ‘‘ != id){Demo.findByIdAndRemove(id, function(err, docs){res.redirect(‘/‘);});}});router.get(‘/modify‘, function(req, res) {var id = req.query.id;if(id && ‘‘ != id){Demo.findById(id ,function(err, docs){res.render(‘modify.html‘, {title:‘修改‘, demo:docs});});}});router.post(‘/modify‘, function(req, res) { var demo = {uid : req.body.uid,title: req.body.title,content : req.body.content};var id = req.body.id; if(id && ‘‘ != id) {Demo.findByIdAndUpdate(id, demo,function(err, docs) {res.redirect(‘/‘);});}});//post方法總會先構建demo對象//demo的方法：find，save，findByIdAndRemove，findById，findByIdAndUpdate//get請求，用req.query.id;post請求，用req.body.id.module.exports = router;
add.html:
<!DOCTYPE html><html> <head> <title><%= title %></title> <link rel=‘stylesheet‘ href=‘/stylesheets/style.css‘ /> </head> <body><h1>增加</h1><form method="post">uid : <input type="text" name="uid"/><br/>title:<input type="text" name="title"/><br/>content:<textarea name="content"></textarea><br/><input type="submit" value="submit"/><input type="reset" value="reset"/></form> </body></html>
index.html:
<!DOCTYPE html><html> <head> <title><%= title %></title> <link rel=‘stylesheet‘ href=‘/stylesheets/style.css‘ /><style type="text/css">table { border:1px solid green;}table thead tr th{ border:1px solid green;}table tbody tr td{ border:1px solid green;}</style> </head> <body><p><a href="http://localhost:3000/add">增加</a></p> <h1>DEMO List</h1><table><thead><tr><th>id</th><th>uid</th><th>title</th><th>content</th><th>createTime</th><th>操作</th></tr></thead><tbody><% demos.forEach(function( demo ){ %><tr><td><%=demo._id%></td><td><%= demo.uid %></td><td><%= demo.title %></td><td><%= demo.content %></td><td><%=demo.createTime%></td><td><a href="http://localhost:3000/del?id=<%=demo._id%>">Delete</a> | <a href="http://localhost:3000/modify?id=<%=demo._id%>">Update</a></td></tr><% }); %></tbody></table> </body></html>
modify.html:
<!DOCTYPE html><html> <head> <title><%= title %></title> <link rel=‘stylesheet‘ href=‘/stylesheets/style.css‘ /> </head> <body><h1>修改</h1><form method="post">uid : <input type="text" name="uid" value="<%=demo.uid%>"/><br/>title:<input type="text" name="title" value="<%=demo.title%>"/><br/>content:<textarea name="content"><%=demo.content%></textarea><br/><input type="hidden" name="id" value="<%=demo._id%>"/><input type="submit" value="submit"/><input type="reset" value="reset"/></form> </body></html>
在此基礎上可以不斷擴充，把學會的bootstrap加上，把好用的jquery UI加上。
node.js+express+mongodb
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