[英]I am not able to uninstall nodejs. After I got the error module not found “node-uuid”
[英]I am not able insert data in mongodb by nodejs. Please find below the logs of the error
我無法連接到mongodb並將數據插入數據庫。 請在下面找到代碼。我在日志中收到以下錯誤:: EventEmitter上的詳細堆棧。(/ usr / local / lib / node_modules / npm / node_modules / npm lifecycle / index.js:280:16) events.js:125:13)EventEmitter.emit上的詳細堆棧(events.js:213:7)ChildProcess.node上的詳細堆棧./bin/www錯誤退出狀態1錯誤在firstexpressproject@0.0.0啟動腳本處失敗。 錯誤這可能不是npm的問題。 上面可能還有其他日志記錄輸出。 詳細出口[1,正確]
這是代碼:
var express = require('express');
var mongo=require('mongodb').MongoClient;
var assert=require('assert');
var router = express.Router();
var url='mongodb://127.0.0.1:27017/test';
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index');
});
router.post('/submit',function(req,res,next){
req.check('email','Invalid email Address').isEmail();
req.check('password','Password is
invalid').isLength({min:4}).equals(req.body.confirmPassword);
var errors=req.validationErrors();
if(errors)
{
req.session.errors=errors;
req.session.success=false;
}
else
{
req.session.success=true;
}
res.redirect('/');
});
router.post('/insert',function(req,res,next)
{
//res.redirect('index');
var item = {
title:req.body.title,
content:req.body.content,
author:req.body.author
};
mongo.connect(url,function(error,db)
{
assert.equal(null,err);
db.collection('user-data').insertOne(item,function(err,result){
assert.equal(null,err);
console.log('Data inserted successfully');
db.close();
});
});
res.redirect('/');
});
router.get('/get-data',function(req,res,next)
{
var resultArray=[];
mongo.connect(url,function(err,db)
{
assert.equal(null,err);
var cursor=db.collection('user-data').find();
cursor.forEach(function(doc,err)
{
assert.equal(null,err);
resultArray.push(doc);
},function()
{
db.close();
res.render('index',{items:resultArray});
});
});
});
module.exports = router;
我認為您沒有鍵入參數名稱:
router.post('/insert',function(req,res,next)
{
//res.redirect('index');
var item = {
title:req.body.title,
content:req.body.content,
author:req.body.author
};
mongo.connect(url,function(error,db)
{
assert.equal(null,err);
db.collection('user-data').insertOne(item,function(err,result){
assert.equal(null,err);
console.log('Data inserted successfully');
db.close();
});
});
res.redirect('/');
});
您要聲明“ err”為空,但范圍內沒有“ err”,您應該:
router.post('/insert',function(req,res,next)
{
//res.redirect('index');
var item = {
title:req.body.title,
content:req.body.content,
author:req.body.author
};
mongo.connect(url,function(error,db)
{
assert.equal(null,error); // fixed here
db.collection('user-data').insertOne(item,function(err,result){
assert.equal(null,err);
console.log('Data inserted successfully');
db.close();
});
});
res.redirect('/');
});
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