如何解决运行 Heroku | NodeJs | MongoDB 的 URL 时 postman 出现“未指定名称”错误
2021-05-25
214
我是 Heroku、NodeJS 和 MongoDB 的新手。我在 Flutter 中创建了一个登录表单，其后端是 NodeJS 和 MongoDB。我使用 Heroku 将后端连接到 Flutter，但是当我在 Postman 上运行 URL（由 Heroku 在构建项目时提供）时，它给了我“未指定的名称”
这是我的 app.js 的代码
var body = require('body-parser');
const mongoose = require('mongoose');
var mongodb = require('mongodb')
var url = 'mongodb://localhost:27017/Mongodb'
var express = require('express');
var app = express();
app.use(body.json());
var bcrypt = require('bcrypt');
var CryptoJS = require("crypto-js")
var jwt = require('jsonwebtoken');
const router= express.Router()
const User = require('./connection');
mongoose.connect('mongodb://localhost:27017/Mongodb', { useUnifiedTopology: true, useNewUrlParser: true },function(err){
if(err){
console.log(err)
}else{
console.log("connection Successful")
}
})
// router.get('/Dashboard', (req, res) => {
// res.send('Hello World')
// })
function checkToken(req,res,result){
const header= req.headers.token;
if(typeof header !== 'undefined'){
const bearer =header.split('.');
const token = bearer[1]
//console.log(token)
req.token = token
//next();
result();
}else
res.json("Error")
}
const login = require('./routes/login')
app.post("/login", async (req, res, next) => {
console.log("login api hit")
login(req,res,next)
} )
const userDashboard = require('./routes/userdashboard')
app.post("/Dashboard",checkToken,(req,res)=> {
userDashboard(req,res);
})
const PORT = process.env.PORT || 5000
app.listen(PORT, function(){
console.log("Server is running")
})
这是 ./routes/login
var body = require('body-parser');
const mongoose = require('mongoose');
var mongodb = require('mongodb')
var url = 'mongodb://localhost:27017/Mongodb'
var express = require('express');
var app = express();
app.use(body.json());
const User = require('../connection');
var bcrypt = require('bcrypt');
var CryptoJS = require("crypto-js")
var jwt = require('jsonwebtoken');
login=(req,res,next)=>{
console.log(req.data)
User.find({"username":req.body.username},function(err,data){
if(err){
console.log("unspecified name")
res.status(400).json("unspecified name")
return;
}
else{
console.log(data.length)
if(data.length<=0)
{
res.status(300).json({
"message":"Invalid Input!"
})
}
else {
//bcrypt.compare(req.body.password,data[0].password).then(function(result) {
var bytes = CryptoJS.AES.decrypt(data[0].password, 'my-secret-key@123');
var decryptedData = JSON.parse(bytes.toString(CryptoJS.enc.Utf8));
console.log(decryptedData)
if (req.body.password==decryptedData)
{
login = "Succesful";
var token = jwt.sign({
data: 'foobar'
}, 'secret', { expiresIn: "2 minute"})
res.status(200).json({auth: true, AccessToken:token, User:data[0]})
}
else
{res.status(300).json({
"message":"Input!"
})}
// });
}}
})
}
module.exports = login;
这是显示 “登录 api 命中”
这是显示 “服务器正在运行”
这是 404 错误 和 400 错误
这是 postman 快照
现在请告诉我我的服务器是否运行正常？看起来是的！但为什么它在邮递员上显示 “未指定的名称” ？ 请帮助我，我是这方面的新手，任何帮助都将不胜感激！
谢谢！
---------------------------编辑的帖子---------------------------
我的数据库数据看起来像这样
但 cmd 屏幕显示此
谁能告诉我这背后的逻辑是什么？这些是从哪里来的？
------------------------编辑帖子-------------------------------
这是我输入凭据时的输出！
这里是 cmd 的输出
2021-05-25T11:04:30.507933+00:00 app[web.1]: Server is running
2021-05-25T11:04:30.682233+00:00 heroku[web.1]: State changed from starting to up
2021-05-25T11:05:00.561298+00:00 app[web.1]: MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/
2021-05-25T11:05:00.561320+00:00 app[web.1]: at NativeConnection.Connection.openUri (/app/node_modules/mongoose/lib/connection.js:832:32)
2021-05-25T11:05:00.561321+00:00 app[web.1]: at /app/node_modules/mongoose/lib/index.js:345:10
2021-05-25T11:05:00.561335+00:00 app[web.1]: at promiseOrCallback (/app/node_modules/mongoose/lib/helpers/promiseOrCallback.js:9:12)
2021-05-25T11:05:00.561341+00:00 app[web.1]: at Mongoose._promiseOrCallback (/app/node_modules/mongoose/lib/index.js:1135:10)
2021-05-25T11:05:00.561342+00:00 app[web.1]: at Mongoose.connect (/app/node_modules/mongoose/lib/index.js:344:20)
2021-05-25T11:05:00.561343+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:13:10)
2021-05-25T11:05:00.561343+00:00 app[web.1]: at Module._compile (internal/modules/cjs/loader.js:1068:30)
2021-05-25T11:05:00.561344+00:00 app[web.1]: at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)
2021-05-25T11:05:00.561344+00:00 app[web.1]: at Module.load (internal/modules/cjs/loader.js:933:32)
2021-05-25T11:05:00.561344+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:774:14)
2021-05-25T11:05:00.561345+00:00 app[web.1]: at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
2021-05-25T11:05:00.561345+00:00 app[web.1]: at internal/main/run_main_module.js:17:47 {
2021-05-25T11:05:00.561346+00:00 app[web.1]: reason: TopologyDescription {
2021-05-25T11:05:00.561346+00:00 app[web.1]: type: 'ReplicaSetNoPrimary',
2021-05-25T11:05:00.561346+00:00 app[web.1]: setName: null,
2021-05-25T11:05:00.561347+00:00 app[web.1]: maxSetVersion: null,
2021-05-25T11:05:00.561347+00:00 app[web.1]: maxElectionId: null,
2021-05-25T11:05:00.561348+00:00 app[web.1]: servers: Map(3) {
2021-05-25T11:05:00.561348+00:00 app[web.1]: 'cluster0-shard-00-02.ocarv.mongodb.net:27017' => [ServerDescription],
2021-05-25T11:05:00.561348+00:00 app[web.1]: 'cluster0-shard-00-00.ocarv.mongodb.net:27017' => [ServerDescription],
2021-05-25T11:05:00.561349+00:00 app[web.1]: 'cluster0-shard-00-01.ocarv.mongodb.net:27017' => [ServerDescription]
2021-05-25T11:05:00.561350+00:00 app[web.1]: },
2021-05-25T11:05:00.561350+00:00 app[web.1]: stale: false,
2021-05-25T11:05:00.561350+00:00 app[web.1]: compatible: true,
2021-05-25T11:05:00.561350+00:00 app[web.1]: compatibilityError: null,
2021-05-25T11:05:00.561351+00:00 app[web.1]: logicalSessionTimeoutMinutes: null,
2021-05-25T11:05:00.561351+00:00 app[web.1]: heartbeatFrequencyMS: 10000,
2021-05-25T11:05:00.561351+00:00 app[web.1]: localThresholdMS: 15,
2021-05-25T11:05:00.561352+00:00 app[web.1]: commonWireVersion: null
2021-05-25T11:05:00.561352+00:00 app[web.1]: }
2021-05-25T11:05:00.561352+00:00 app[web.1]: }
2021-05-25T11:15:57.214740+00:00 app[web.1]: login api hit
2021-05-25T11:15:57.215001+00:00 app[web.1]: {}
2021-05-25T11:16:07.230564+00:00 app[web.1]: unspecified name
2021-05-25T11:16:07.247306+00:00 app[web.1]: /app/node_modules/mongoose/lib/helpers/promiseOrCallback.js:19
2021-05-25T11:16:07.247307+00:00 app[web.1]: throw error;
2021-05-25T11:16:07.247308+00:00 app[web.1]: ^
2021-05-25T11:16:07.247308+00:00 app[web.1]:
2021-05-25T11:16:07.247309+00:00 app[web.1]: ReferenceError: print is not defined
2021-05-25T11:16:07.247310+00:00 app[web.1]: at /app/routes/login.js:19:7
2021-05-25T11:16:07.247310+00:00 app[web.1]: at /app/node_modules/mongoose/lib/model.js:4863:16
2021-05-25T11:16:07.247310+00:00 app[web.1]: at /app/node_modules/mongoose/lib/model.js:4863:16
2021-05-25T11:16:07.247311+00:00 app[web.1]: at /app/node_modules/mongoose/lib/helpers/promiseOrCallback.js:16:11
2021-05-25T11:16:07.247311+00:00 app[web.1]: at /app/node_modules/mongoose/lib/model.js:4886:21
2021-05-25T11:16:07.247312+00:00 app[web.1]: at /app/node_modules/mongoose/lib/query.js:4389:18
2021-05-25T11:16:07.247312+00:00 app[web.1]: at /app/node_modules/mongoose/lib/query.js:4424:14
2021-05-25T11:16:07.247313+00:00 app[web.1]: at cb (/app/node_modules/mongoose/lib/query.js:1895:14)
2021-05-25T11:16:07.247313+00:00 app[web.1]: at /app/node_modules/mquery/lib/collection/node.js:27:21
2021-05-25T11:16:07.247314+00:00 app[web.1]: at collectionOperationCallback (/app/node_modules/mongoose/lib/drivers/node-mongodb-native/collection.js:160:26)
2021-05-25T11:16:07.247323+00:00 app[web.1]: at Timeout.<anonymous> (/app/node_modules/mongoose/lib/drivers/node-mongodb-native/collection.js:185:11)
2021-05-25T11:16:07.247323+00:00 app[web.1]: at listOnTimeout (internal/timers.js:555:17)
2021-05-25T11:16:07.247324+00:00 app[web.1]: at processTimers (internal/timers.js:498:7)
2021-05-25T11:16:07.247324+00:00 app[web.1]: Emitted 'error' event on Function instance at:
2021-05-25T11:16:07.247324+00:00 app[web.1]: at /app/node_modules/mongoose/lib/model.js:4865:13
2021-05-25T11:16:07.247325+00:00 app[web.1]: at /app/node_modules/mongoose/lib/helpers/promiseOrCallback.js:16:11
2021-05-25T11:16:07.247325+00:00 app[web.1]: [... lines matching original stack trace ...]
2021-05-25T11:16:07.247326+00:00 app[web.1]: at processTimers (internal/timers.js:498:7)
2021-05-25T11:16:07.314225+00:00 heroku[web.1]: Process exited with status 1
2021-05-25T11:16:07.401592+00:00 heroku[web.1]: State changed from up to crashed
2021-05-25T11:16:07.409072+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-25T11:16:07.240945+00:00 heroku[router]: at=info method=POST path="/login" host=attendance-demo.herokuapp.com request_id=ac9410a0-ac64-420b-b4d5-803aaa1a3fb2 fwd="111.88.134.32" dyno=web.1 connect=1ms service=10035ms status=400 bytes=234 protocol=https
2021-05-25T11:16:18.897092+00:00 heroku[web.1]: Starting process with command `node app`
2021-05-25T11:16:30.471917+00:00 heroku[web.1]: State changed from starting to up
2021-05-25T11:16:30.423428+00:00 app[web.1]: Server is running
这是我在单击按钮时调用的 authenticate.dart 文件
import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
class AuthService{
Dio dio=new Dio();
login(name,password)async{
try{
return await dio.post('https://attendance-demo.herokuapp.com/login',data: {
"username":name,
"password":password
},options: Options(contentType:Headers.formUrlEncodedContentType)
);
}
on DioError catch(e){
Fluttertoast.showToast(msg: e.response.data['msg'],
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.BOTTOM,
backgroundColor: Colors.red,
textColor: Colors.white,
fontSize: 16.0
);
}
}
}
这是我创建的 登录按钮代码 并从身份验证类调用登录方法
RoundedButton(text:"Login", press: () {
AuthService().login(name,password).then((value){
if(value.data['success']){
token=value.data['token'];
Fluttertoast.showToast(msg: 'Authenticated',
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.BOTTOM,
backgroundColor: Colors.red,
textColor: Colors.white,
fontSize: 16.0);
}