node.js - 即使服务器出现错误，Node.js 中始终会收到 http 状态代码 200

Question

我使用 Node 作为 React App 和 Microsoft Dynamics Nav 之间的代理服务器。我在 OData 和 SOAP Web 服务中发出 CRUD 请求。当 Dynamics Nav Server 响应错误时，我需要在 React App 中显示该错误。问题是我总是在 Node.js 中收到 http 200 状态代码，即使我在服务器上收到错误(即 404)。这是 Node.js 和 Postman 中 put 请求的示例响应:

postman

Node.js

这是 server.js 文件:

const express = require('express');
const cors = require('cors');
const bodyParser = require('body-parser');
const app = express();

const server = app.listen(5000, function() {
    console.log(new Date().toISOString() + ": server started on port 5000");
});

server.on('connection', (socket) => {
    console.log('New connection...');
});


app.use(bodyParser.urlencoded({ extended: false }));

// parse application/json
app.use(bodyParser.json());
app.use(cors());

//app.use(bodyParser.urlencoded({ extended: true }));

app.get('/', function (req, res) {
    res.send('Express for courier is working on IISNode!');
});

app.use(require('./routes/routesLogin'));
app.use(require('./routes/routesCustomers'));
app.use(require('./routes/routesContacts'));
app.use(require('./routes/routesPostCodes'));
app.use(require('./routes/routesCountriesRegions'));
app.use(require('./routes/routesDepots'));
app.use(require('./routes/routesPUOrder'));

这是放置请求的函数:

    ModifyPUOrder: function (req, res) {
        console.log('MODIFY');
        const PUOrderNo = req.body.puOrderNo;
        const updatedValue = req.body.updatedValue;
        console.log('MODIFY PU', PUOrderNo);
        console.log('UPDATEDVALUE', updatedValue)
        const url = `${base}/PUOrderCard('${PUOrderNo}')`;

        request =   `{ ${updatedValue} }`;
        
        put(username, password, url, request).then(response => {
            console.log(response);
            res.send(response);
        })
    },

任何帮助将不胜感激!

Answer 1

Express 中响应的默认状态代码是 200，您可以在调用 send 之前更改此值

res.status(400).send('Bad request')