NodeJS：返回未定义的数据类型

Posted 2023-03-11

【中文标题】NodeJS：返回未定义的数据类型

【英文标题】：NodeJS: Datatype returned undefined

【发布时间】：2016-04-24 16:19:20

【问题描述】：

这是我的 controller.js

$scope.saveDetails = function()
     if($scope.editMode == false)
    //$scope.hidesave = false;
    //$scope.person = "";
    console.log("i am in save")
    console.log($scope.person);
    $http.post('/details',$scope.person).success(function(response)
        console.log(response);
        refresh();
    )
    $state.go("itemList");

这是我的 Route.JS

module.exports = function (app)
    console.log("Inside Routes");

    app.get('/details', require('./details/details').getDetails);   
    app.get('/details/:id', require('./details/details').getDetails_id);
    app.post('/details', require('./details/details').saveDetails);
    app.delete('/details/:id',require('./details/details').deleteDetails);
    app.post('/details/:id',require('./details/details').updateDetails);
;

这是我的 details.js，实际实现是：

exports.saveDetails = function (req, res) 
    console.log("Hi");
    console.log("this is to save: ",req.body);
    var person = new req.app.schema.detailsdb(req.body);
    person.save(req.body,function(err,docs)
        res.json(docs);
        console.log("docs: ",docs)
    );
;

当我尝试将数据从 html 页面插入 DB 时，这里 req.body 返回 undefined，我使用 Mongoose 编写了 DB

【问题讨论】：

你是否包含了 express body-parser 中间件？

【参考方案1】：

要解析 JSON，您需要包含 express body-parser 模块并在路由之前使用它：

var bodyParser = require('body-parser')

// parse application/json
app.use(bodyParser.json())

// the rest of your routes here.

app.get('/details', require('./details/details').getDetails);   
app.get('/details/:id', require('./details/details').getDetails_id);
app.post('/details', require('./details/details').saveDetails);
app.delete('/details/:id',require('./details/details').deleteDetails);
app.post('/details/:id',require('./details/details').updateDetails);

https://github.com/expressjs/body-parser/blob/master/README.md

【讨论】：

谢谢，这解决了我的错误...非常感谢您.. :)