Express 項目中使用 Mongoose

創建好express 項目caoyuan

1、 建一個config文件夾並在裏面創建一個config.js

module.exports={
 mongodb:"mongodb://localhost/cao_db" // 導入數據庫連接
};

2、 在config文件夾創建一個mongoose.js

var mongoose=require('mongoose');
var config=require('./config.js');           //引入config配置文件夾下的配置文件
module.exports=function(){                   //導出數據庫模塊
    var db=mongoose.connect(config.mongodb);   //創建數據庫連接對象db
    require('../models/user.server.model.js')  //引入models文件夾下的user.server.model.js
    return db;
};

3、 建一個models文件夾並在裏面創建一個user.server.model.js

var mongoose=require('mongoose');
var UserSchema=new mongoose.Schema({
    uid:Number,
    username:String,
    createTime:Date,
    lastLogin:Date
});
mongoose.model('User',UserSchema);

4、 在config文件夾創建一個mongoose.js

var express = require('express');
var router = express.Router();

var mongoose=require('mongoose');
var User=mongoose.model('User');

/* GET users listing. */
router.get('/', function(req, res, next) {
  res.send('respond with a resource');
});
router.get('/test',function(req,res,next){
    var user=new User({
        uid:1,
        username:'caopeng'
    });
    user.save(function(err){
        if(err){
            res.end('Error');
            return next();
        }
        User.find({},function(err,docs){
            if(err){
                console.log('Error:');
                return next();
            }
            res.json(docs);
        });
    });
});
module.exports = router;

5、 routes 下面的文件夾中user.js

var express = require('express');
var router = express.Router();

var mongoose=require('mongoose');  //引文mongoose模塊
var User=mongoose.model('User');   //創建mongoose下model對象

/* GET users listing. */
router.get('/', function(req, res, next) {
  res.send('respond with a resource');
});

router.get('/test',function(req,res,next){   //創建路由
    var user=new User({
        uid:1,
        username:'caopeng'
    });
    user.save(function(err){
        if(err){
            res.end('Error');
            return next();
        }
        User.find({},function(err,docs){
            if(err){
                console.log('Error:');
                return next();
            }
            res.json(docs);
        });
    });
});
module.exports = router;

6、app.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 mongoose=require('./config/mongoose.js');
var db=mongoose();


var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__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 handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (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 user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;

未完成，待完善，要寫一篇人人都看得懂的好貼子得費好大勁，截圖註釋