nodejs/express。createserver不是一个函数

Question

我对诺德很陌生。js我正在尝试使用nodeEmailer发送电子邮件，我目前在控制台上收到一个类型错误。

//错误//[0]类型错误：express。createServer不是应用程序上的函数[0]。在第二层发布（/Users/thomashunt/Desktop/react_express_starter/server.js:33:17）[0]。在下一步处理[as handle_request]（/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/layer.js:95:5）[0]（/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/route.js:137:13）[0]。层上的调度（/Users/thomashunt/Desktop/react\u express\u starter/node\u modules/express/lib/router/route.js:112:3）[0]。handle[as handle_request]（/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/layer.js:95:5）[0]at/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/index。js:281:22[0]at函数。下一步处理参数（/Users/thomashunt/Desktop/react\u express\u starter/node\u modules/express/lib/router/index.js:335:12）[0]（/Users/thomashunt/Desktop/react\u express\u starter/node\u modules/express/lib/router/index.js:275:10）[]urlencodedParser（/Users/thomashut/Desktop/react\u express\u starter/node\u modules/body parser/lib/types/urlencoded.js:82:7）第三层为[0]。handle[as handle_request]（/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/layer.js:95:5）

//错误结束

这是我服务器的代码。js文件：

const nodemailer = require('nodemailer')
const path = require('path')
const express = require('express')
const app = express()
const port = 5000
const cors = require('cors')
app.use(cors())
const bodyParser = require('body-parser')
app.use(bodyParser.json())
// to support JSON-encoded bodies
app.use(
  bodyParser.urlencoded({
    // to support URL-encoded bodies
    extended: true
  })
)

app.get('/home', (req, res) => {
  console.log(
    'Hello from .get /home',
    req.body.generalDetails,
    req.body.firstName,
    req.body.mName
  )
})

app.post('/home', (req, res) => {


  var express = require('express'),
  nodemailer = require("nodemailer");

  app = express.createServer();

  app.use(express.bodyParser());

  app.post('/formProcess', function (req, res) {
      var data=req.body;

      var smtpTransport = nodemailer.createTransport("SMTP",{
         service: "Gmail",
         auth: {
         user: "[e-mail]",
         pass: "pass"
         }});

     smtpTransport.sendMail({  //email options
     from: "email",
     to: "[e-mail]", // receiver
     subject: "Emailing with nodemailer", // subject
     text:req.body.generalDetails,
     html: "here your data goes"// body (var data which we've declared)
      }, function(error, response){  //callback
           if(error){
             console.log(error);
          }else{
             console.log("Message sent: " + res.message);
         }

     smtpTransport.close();
      }); });

  let data = [{
    //page one data
    generalDetails: req.body.generalDetails,
    fName: req.body.fName,
    mName: req.body.mName,
    lName: req.body.lName,
    email: req.body.email,
   }];

   res.json(data);

 }

);

app.listen(port, () => `Server running on port ${port}`);

Answer 1

我想你把http模块搞混了。替换你的

app = express.createServer();

具有

app = express();

如果要使用createServer，应执行以下操作

const http = require('http');
const express = require('express');
var app = express();

... your route config

var server = http.createServer(app)
server.listen(3000, function () {
  console.log('Express is running on port 3000')
})