node[21]-express+mondoDB应用部署到heroku

2018-11-18 nodejs nodejs 前端 17 评论字数统计: 394(字) 阅读时长: 2(分)

express+mongoDB部署到heroku

注意process.env.PORT 与 process.env.MONGODB_URI
源代码postman.js：

var mongoose = require('mongoose');
var express = require('express');
var bodyParser = require('body-parser');
const {ObjectID} = require('mongodb');



//app
var app = express();
const port = process.env.PORT || 3000;
//express middleware  Jonson对象与字符串转换。
app.use(bodyParser.json());

//
mongoose.Promise = global.Promise;
//连接mogodb
mongoose.connect(process.env.MONGODB_URI || 'mongodb://localhost:27017/TodoApp');

//模版
var Todo = mongoose.model('Todo',{
    text:{
      type:String,  //类型
      required:true, //必须要有
      minlength:1, //最小长度
      trim:true   //去除空格
    },
    completed:{
      type:Boolean,
      default:false  //默认值
    },
    completedAt:{
      type:Number,
      default:null
    }
});

//express route
app.post('/todos',(req,res)=>{
//  console.log(req.body);

    //建立对象document
    var todo = new Todo({
        text:req.body.text
    });
    //保存
      todo.save().then((doc)=>{
      res.send(doc);
    },(e)=>{
        res.status(400).send(e);
    });

})
//获取所有属性

app.get('/todos', (req, res) => {
  Todo.find().then((todos) => {
    res.send({todos});
  }, (e) => {
    res.status(400).send(e);
  })
});


//查询id
app.get('/todos/:id', (req, res) => {
  var id = req.params.id;

  if (!ObjectID.isValid(id)) {
    return res.status(404).send();
  }

  Todo.findById(id).then((todo) => {
    if (!todo) {
      return res.status(404).send();
    }

    res.send({todo});
  }).catch((e) => {
    res.status(400).send();
  });
});


//监听
app.listen(port,()=>{
    console.log(`Start on port ${port}`);
});
module.exports = {
   app,
   Todo
}

package.json

package.json配置文件中指定start脚本与node的版本

"scripts": {
  "test": "mocha",
  "test-watch":"nodemon --exec 'npm test'",
  "start": "node postman.js"
},
"engines":{
  "node": "10.13.0"
},

heroku部署

heroku create
heroku addons:create mongolab:sandbox  //添加mongodb到 heroku
heroku config    //查看
git add .
git commit -m "commit"
git push heroxu master