node.js - 连接到 Node “most middleware (like bodyParser) and must be installed separately by nodejs"时出错

Question

我正在尝试配置我的 Node 应用程序，但当前出现错误:

错误:大多数中间件(如 bodyParser)不再与 Express 捆绑在一起，必须单独安装。请参阅https://github.com/senchalabs/connect#middleware .

我在该网站上，但不太确定我应该寻找什么，因为我对 Node.js 还很陌生。非常感谢您的帮助!

这是完整的消息。

[0] 错误:大多数中间件(如 bodyParser)不再与 Express 捆绑在一起，必须单独安装。请参阅https://github.com/senchalabs/connect#middleware 。[0] 在 Function.get (/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/express.js:110:13)[0] 在 app.post (/Users/thomashunt/Desktop/react_express_starter/server.js:45:19)[0]在Layer.handle [作为handle_request](/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/layer.js:95:5)[0] 接下来 (/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/route.js:137:13)[0] 在 Route.dispatch (/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/route.js:112:3)[0]在Layer.handle [作为handle_request](/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/layer.js:95:5)[0]位于/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/index.js:281:22[0] 在 Function.process_params (/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/index.js:335:12)[0] 接下来 (/Users/thomashunt/Desktop/react_express_starter/node_modules/express/lib/router/index.js:275:10)[0]位于urlencodedParser(/Users/thomashunt/Desktop/react_express_starter/node_modules/body-parser/lib/types/urlencoded.js:82:7)

//结束

服务器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
  )
})


const http = require('http');



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

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


  app.use(express.bodyParser());

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

      var smtpTransport = nodemailer.createTransport("SMTP",{
         service: "Gmail",
         auth: {
         user: "email",
         pass: "pass"
         }});

     smtpTransport.sendMail({  //email options
     from: "thomas.hunt@careertrackers.org.au",
     to: "thomas.hunt@careertrackers.org.au", // 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,
    gender: req.body.gender,

   }];

   res.json(data);

 }

);

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

Answer 1

您已以正确的方式在应用程序顶部定义了中间件:app.use(bodyParser.json());

您还在代码中再次定义了它，这不是正确的方式，因为最新版本的 Express 没有内置用于正文解析器的中间件。

删除此行:app.use(express.bodyParser());