express+mongodb+mongoose实践-MR LYU

1，全局安装express框架生成器

npm install -g express-generator

1	npm install -g express-generator

2，生成express项目

express server //server是项目名称

1	express server //server是项目名称

3，安装mongodb，rodo 3T

4，接口开发

4.1安装mongoose

npm install mongoose --save

1	npm install mongoose --save

4.2创建model

在express server项目下创建models文件夹，新建goods.js文件

var mongoose = require('mongoose')
var Schema = mongoose.Schema;
//Schema对应数据库中集合的字段
var produtSchema = new Schema({
  "productId":{type:String},
  "productName":String,
  "salePrice":Number,
  "checked":String,
  "productNum":Number,
  "productImage":String
});

module.exports = mongoose.model('Good',produtSchema); //这里通过Good，去寻找MongoDB里名称为goods的集合

var mongoose = require('mongoose')

var Schema = mongoose.Schema;

//Schema对应数据库中集合的字段

var produtSchema = new Schema({

"productId":{type:String},

"productName":String,

"salePrice":Number,

"checked":String,

"productNum":Number,

"productImage":String

});

module.exports = mongoose.model('Good',produtSchema); //这里通过Good，去寻找MongoDB里名称为goods的集合

4.3创建路由

在express server项目routes文件夹下创建goods.js文件

var express = require('express');
var router = express.Router();
var mongoose = require('mongoose');
var Goods = require('./../models/goods');

//连接MongoDB数据库
mongoose.connect('mongodb://127.0.0.1:27017/kkdemo');

mongoose.connection.on("connected", function () {
  console.log("MongoDB connected success.")
});

mongoose.connection.on("error", function () {
  console.log("MongoDB connected fail.")
});

mongoose.connection.on("disconnected", function () {
  console.log("MongoDB connected disconnected.")
});

//查询商品列表数据
router.get("/", function (req,res,next) {
    // res.send("hi,goods");
    Goods.find({}, function(err,doc){
        if(err){
            res.json({
                status:'1',
                msg:err.message
            });
        }else{
            res.json({
                status:'0',
                msg:'0',
                result:{
                    count: doc.length,
                    list: doc
                }
            });
        }
    });
});


module.exports = router;

var express = require('express');

var router = express.Router();

var mongoose = require('mongoose');

var Goods = require('./../models/goods');

//连接MongoDB数据库

mongoose.connect('mongodb://127.0.0.1:27017/kkdemo');

mongoose.connection.on("connected", function () {

console.log("MongoDB connected success.")

});

mongoose.connection.on("error", function () {

console.log("MongoDB connected fail.")

});

mongoose.connection.on("disconnected", function () {

console.log("MongoDB connected disconnected.")

});

//查询商品列表数据

router.get("/", function (req,res,next) {

// res.send("hi,goods");

Goods.find({}, function(err,doc){

if(err){

res.json({

status:'1',

msg:err.message

});

}else{

res.json({

status:'0',

msg:'0',

result:{

count: doc.length,

list: doc

}

});

}

});

module.exports = router;

在app.js中设置一级路由

var goodsRouter = require('./models/goods');

app.use('/goods', goodsRouter);

var goodsRouter = require('./models/goods');

app.use('/goods', goodsRouter);

这里有一个插曲，将express的视图模板改为HTML，而非默认的jade格式

（1）安装ejs

npm install ejs --save

1	npm install ejs --save

（2）在express项目，app.js中增加

var ejs = require('ejs');

app.engine('.html',ejs.__express);

var ejs = require('ejs');

app.engine('.html',ejs.__express);

修改

app.set('view engine', 'html');

1	app.set('view engine', 'html');

5，结束，可以访问了。

http://localhost:3000/goods

未经允许不得转载：MR LYU » express+mongodb+mongoose实践

express+mongodb+mongoose实践

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