Question

我无法使用MongoDB和Node.js登录用户。它没有抛出任何错误但无法提供用户在登录后想要的任何数据。我在下面解释我的代码。

server.js

var port=8888;
var express=require('express');
var morgan = require('morgan');
var http=require('http');
var bodyParser= require('body-parser');
var methodOverride = require('method-override');
var mongo = require('mongojs');
var database='Oditek';
var collections=['video'];
var app= express();
var server=http.createServer(app);
var io=require('socket.io')(server);
var db = mongo("127.0.0.1:27017/"+database, collections);
app.use(express.static(__dirname + '/public'));     // set the static files location /public/img will be /img for users
app.use(morgan('dev'));                     // log every request to the console
app.use(bodyParser.urlencoded({ extended: false }))    // parse application/x-www-form-urlencoded
app.use(bodyParser.json())    // parse application/json
app.use(methodOverride());                  // simulate DELETE and PUT
app.get('/',function(req,res){
    res.sendfile('view/login.html');
});
app.post('/login',function(req,res){
    var username=req.body.username;
    var password=req.body.userpassword;
    if(username && password){
        db.video.findOne({
            username:username,
            password:password
        },function(err,doc){
            console.log('login',doc);
            if(doc){
            res.send(doc);
            }
            if(err){
                console.log('login',err);
                res.send("could not login");
            }
        });
    }
});
app.get('/video',function(req,res){
    res.sendfile('view/video.html');
});
server.listen(port);
console.log('server is listening on the port'+port);

login.js：

function login(){
    var uName=$('#uname').val();
    var uPass=$('#upass').val();
    var data={username:uName,userpassword:uPass};
    $.ajax({
        type: 'POST',
        url:"/login",
        data:data,
        success: function(data){
            console.log(data);
            location.href="http://localhost:8888/video?usertype='+data.type+' & id= '+data.id+' ";
        }
    });
}

的package.json：

{
  "name": "oditek",
  "main": "server.js",
  "dependencies": {
    "express": "~4.0.0",
    "morgan": "~1.0.0",
    "body-parser": "~1.0.0",
    "method-override": "~1.0.0",
    "socket.io":"1.3.5",
    "mongojs": "1.2.1"
  }
}

服务器端的app.post方法的控制台部分根本没有执行。请帮我解决此错误。

Answer 1

我已经测试了您的代码及其正常工作，从视频收集中返回用户记录。你能检查一下mongodb是否正在运行，你也可以通过添加这些行看到。

without changing your code this will help you.


import java.util.Scanner;
public class Password {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);

        String rightPassword = "Hello123";

        System.out.println("Write your password: ");
        String scan = scanner.nextLine();

        while(scan.equals(rightPassword)){
            System.out.println("You are logged in");
            break end;
        }
        System.out.println("Wrong password");
        end:
    }

}

我已经测试了你的代码并让我很好，试着改变它：

    db.runCommand({ping: 1}, function (err, res) { if(!err && res.ok) console.log('we\'re up')});

请同时查看日志，摩根正在写日志而不是当你点击网址时，请先与邮递员（chrome插件）联系以测试你的api。

无法使用MongoDB和Node.js登录

1 个答案: