Express配置post请求的body解析

const app = express();

app.post('/api/login', (req, res) => {
console.log(req.body); // undefined

console.log(req.body['username']); // 报错
console.log(req.body['password']); // 报错
});

默认配置的express服务器会像这样找不到request的body，导致拿不到前端推送的内容

解决方案

import * as express from 'express';
import * as bodyParser from 'body-parser';

const app = express();

// body-parser for POST (see https://github.com/expressjs/body-parser)
app.use(bodyParser.urlencoded({extended: false}));
app.use(bodyParser.json());

然后就可以拿到request.body了。