正文解析器不适用于打字稿，当我发送请求时，我在 request.body 中收到未定义的信息

Question

这是我使用 typescript 3.7.4 的 Express 应用程序的以下代码：

import bodyParser from "body-parser";
import config from "config";
import cookieParser from "cookie-parser";
import express from "express";
import mongoose from "mongoose";
import path from "path";

export default class App {

    public app: express.Application;

    constructor() {
        this.app = express();
        this.initializeMiddlewares();
    }

    public listen(port: any) {
        this.app.listen(port, () => {
            console.log(`App listening on the port ${port}`);
        });
    }

    public initializeControllers(controllers: any) {
        controllers.forEach((controller: any) => {
            this.app
                .use(bodyParser.json())
                .use(bodyParser.urlencoded())
                .use("/", controller.router);
        });
    }

}`

请帮我解决这部分代码。我不明白，当我发送帖子请求时，为什么我在 request.body 中未定义。

Answer 1

如果您运行的是express 4.16或更高版本，则不再需要使用body-parser。

您可以尝试这样做：

import config from "config";
import cookieParser from "cookie-parser";
import express from "express";
import mongoose from "mongoose";
import path from "path";

export default class App {
    
    public app: express.Application;

    constructor() {
        this.app = express();
        this.initializeMiddlewares();
    }

    public listen(port: any) {
        this.app.listen(port, () => {
            console.log(`App listening on the port ${port}`);
        });
    }

    public initializeControllers(controllers: any) {
        controllers.forEach((controller: any) => {
            this.app.use(express.json());
            this.app.use(express.urlencoded());
            this.app.use("/", controller.router);
        });
    }

}`

请参阅此处了解更多信息：https://medium.com/@mmajdanski/express-body-parser-and-why-may-not-need-it-335803cd048c