在 post、put 和 delete 上使用 mongoose 和 node.js 休息 api

Posted 2023-03-07

【中文标题】在 post、put 和 delete 上使用 mongoose 和 node.js 休息 api

【英文标题】：restapi using mongoose and node.js on post,put, and delete

【发布时间】：2017-01-10 04:45:59

【问题描述】：

所以我正在审查和练习使用 node mongoose 和 express 制作 rest api。我在将帖子作为 api 的一部分时遇到问题，因为我遇到了一个我不确定如何修复的错误。我有点确定如何进行放置和删除部分。但是，如果有人可以展示那会是什么样子。会很棒的。

mongoose.connect('mongodb://localhost:27017/pokemon');

var pokemonSchema = 
    pokeid: Number,
    name:String,
    type:String,
    weight:String,
    height: String,
    date:  type: Date, default: Date.now ,
    summary: String



var Pokemon = mongoose.model('Pokemon', pokemonSchema);

var app = express();
app.use(cors());

app.get('/api', function(req, res) 
    res.json( message: 'hooray! welcome to our api!' );
);

//gets the all the pokemon
app.get('/pokemon', function(req, res) 
    Pokemon.find(function(err, doc) 
        res.send(doc);
    );
);

//gets a specific pokemon
app.get('/pokemon/:id', function(req, res) 
    Pokemon.findOne( _id: req.params.id,function (err, doc) 
        res.send(doc);
    )
)


//create a new pokemon
app.post('/pokemon', function(req, res) 

    var pokemon = new Pokemon();

    pokemon.pokeid = req.body.pokeid;
    pokemon.name = req.body.name;
    pokemon.type = req.body.type;
    pokemon.weight = req.body.weight;
    pokemon.height = req.body.height;
    pokemon.summary = req.body.summary;

    //save pokemon
    pokemon.save(function(err) 
        if (err)
            res.send(err);
        res.json( message: 'pokemon created');
    );


)

//update the pokemon

app.put('/pokemon/:id', function(req, res) 


)

app.delete('/pokemon/:id', function(req, res) 

);

错误

TypeError: Cannot read property 'pokeid' of undefined
<br> &nbsp; &nbsp;at /home/g62/pokemonsite/server/server.js:54:30
<br> &nbsp; &nbsp;at Layer.handle [as handle_request] (/home/g62/pokemonsite/server/node_modules/express/lib/router/layer.js:95:5)
<br> &nbsp; &nbsp;at next (/home/g62/pokemonsite/server/node_modules/express/lib/router/route.js:131:13)
<br> &nbsp; &nbsp;at Route.dispatch (/home/g62/pokemonsite/server/node_modules/express/lib/router/route.js:112:3)
<br> &nbsp; &nbsp;at Layer.handle [as handle_request] (/home/g62/pokemonsite/server/node_modules/express/lib/router/layer.js:95:5)
<br> &nbsp; &nbsp;at /home/g62/pokemonsite/server/node_modules/express/lib/router/index.js:277:22
<br> &nbsp; &nbsp;at Function.process_params (/home/g62/pokemonsite/server/node_modules/express/lib/router/index.js:330:12)
<br> &nbsp; &nbsp;at next (/home/g62/pokemonsite/server/node_modules/express/lib/router/index.js:271:10)
<br> &nbsp; &nbsp;at cors (/home/g62/pokemonsite/server/node_modules/cors/lib/index.js:179:7)
<br> &nbsp; &nbsp;at /home/g62/pokemonsite/server/node_modules/cors/lib/index.js:229:17
<br> &nbsp; &nbsp;at originCallback (/home/g62/pokemonsite/server/node_modules/cors/lib/index.js:218:15)
<br> &nbsp; &nbsp;at /home/g62/pokemonsite/server/node_modules/cors/lib/index.js:223:13
<br> &nbsp; &nbsp;at optionsCallback (/home/g62/pokemonsite/server/node_modules/cors/lib/index.js:204:9)
<br> &nbsp; &nbsp;at corsMiddleware (/home/g62/pokemonsite/server/node_modules/cors/lib/index.js:209:7)
<br> &nbsp; &nbsp;at Layer.handle [as handle_request] (/home/g62/pokemonsite/server/node_modules/express/lib/router/layer.js:95:5)
<br> &nbsp; &nbsp;at trim_prefix (/home/g62/pokemonsite/server/node_modules/express/lib/router/index.js:312:13)

我一直在尝试修复它，但不确定如何。

为此使用邮递员

【问题讨论】：

你在req.bodyPOST 通话中得到什么？

我正在关注本教程scotch.io/tutorials/…。 req.body 应该与架构匹配。

添加控制台并检查req.body的值。还向我们展示您如何向/pokemon 提出请求？

使用邮递员检查api和东西

只要把这一行 console.log(req.body);以上 var pokemon = new Pokemon();如果你打电话给route

，那会打印出来

【参考方案1】：

req.body

包含在请求正文中提交的数据键值对。经过 默认情况下，它是未定义的，并且在您使用 body-parsing 时填充 中间件，例如 body-parser 和 multer。

下面的例子展示了如何使用 body-parsing 中间件 填充 req.body。

var app = require('express')();
var bodyParser = require('body-parser');
var multer = require('multer'); // v1.0.5
var upload = multer(); // for parsing multipart/form-data

app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded( extended: true )); // for parsing application/x-www-form-urlencoded

app.post('/profile', upload.array(), function (req, res, next) 
  console.log(req.body);
  res.json(req.body);
);

请阅读链接：http://expressjs.com/en/api.html#req.body

【参考方案2】：

//create a new pokemon
app.post('/pokemon', function(req, res) 

    var pokemon = new Pokemon(

    pokeid = req.body.pokeid;
    name = req.body.name;
    type = req.body.type;
    weight = req.body.weight;
    height = req.body.height;
    summary = req.body.summary;

);


    //save pokemon
    pokemon.save(function(err) 
        if (err)
            res.send(err);
        res.json( message: 'pokemon created');
    );


)

【参考方案3】：

要提交 post/put/delete 请求，最好使用 body-parser 中间件。

例如从数据库中删除任何数据（例如口袋妖怪），您可以按照此方法。

包括/需要必要的库/模块。

var express = require('express');
var bodyParser = require('body-parser');
var router = express.Router();
var urlencode = bodyParser.urlencoded(extended: false);

现在在 API 上创建删除请求...

router.delete('/pokemon/:id', urlencode, function(req, res, next)
     new Videos(id: req.body.id).destroy().then(function(result)
        res.json(result.toJSON());
     ) 
);