undefined in a HTTP POST body

I wrote a handler like this. When I use form post or Postman’s post, it gets an empty object. But I use supertest to test it, it seems OK, and get the right body object.

request.body is always undefined.

    @Post("/")
    async saveOne(@Body() data) { //data is {} if not in test
        return await this.todoService.save(data);
    }

test code: PASS

"use strict";
describe("Todo测试", ()=> {
    const expect = require("chai").expect;
    const supertest = require("supertest");
    const request = supertest.agent(`http://localhost:${process.env.LEANCLOUD_APP_PORT}`);

    it("写入对象", (done)=> {
        request.post("/todos").send({"content": `测试数据 - ${new Date()}`}).expect(200).end((e, res)=> {
            expect(res.body).to.be.an("object", "返回对象");
            done();
        });
    });
});

Chrome’s POST form submit: FAILED

curl 'http://localhost:3000/todos' -H 'Origin: http://localhost:3000' -H 'Accept-Encoding: gzip, deflate' -H 'Accept-Language: zh-CN,zh;q=0.8' -H 'Upgrade-Insecure-Requests: 1' -H 'User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36' -H 'Content-Type: application/x-www-form-urlencoded' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8' -H 'Cache-Control: max-age=0' -H 'Referer: http://localhost:3000/' -H 'Connection: keep-alive' -H 'DNT: 1' --data 'content=test' --compressed

Postman’s curl: FAILED

curl -X POST -H "Cache-Control: no-cache" -H "Postman-Token: e06e03e8-6009-28f6-59cc-0cc72ac6dfbc" -H "Content-Type: application/x-www-form-urlencoded" -d 'content=value to be save&ignore=value to be ignore' "http://localhost:3000/todos"

p.s. just ignore those Chinese characters,there’re nothing to do with this issue, consider them just strings

[Diluka]

but I still have a question

when I use json params to post, how can I do pre-process in a middleware. at the beginning, the json params successfully inject into the method params, but I can’t get it from req.body

and I response json, but get any kind of params by middlewares translating into json to handle. which decorator shall I use, @Controller or @JsonController ? Now I use @JsonController and body-parser. Is this right?

[pleerock]

I tried, it’s the same. And the normal html form doesn’t json, it’s not work too. Besides, the request body is always undefined, how can I use middleware to deal with?

if you are working with json, you should always specify json content headers. btw are you using @JsonController or @Controller. Because if you are working NOT WITH JSON (forms are not working with json) you should use @Controller, not @JsonController.

export const app: Express.Application = createExpressServer({ controllerDirs: [__dirname + “/controller//*.controller.js"], middlewareDirs: [__dirname + "/middleware//.middleware.js"], interceptorDirs: [dirname + "/interceptor//.interceptor.js”] }); app.use(json()); app.use(urlencoded({extended: true}));

You are doing it wrong. createExpressServer creates and bootstraps express server. You probably should do you logic before it bootstrap the app. To do that you need to create your own express server and use useExpressServer instead. Something like this:

const app = express();
app.use(json());
app.use(urlencoded({extended: true}));
useExpressServer(app, {
    controllerDirs: [__dirname + "/controller/**/*.controller.js"],
    middlewareDirs: [__dirname + "/middleware/**/*.middleware.js"],
    interceptorDirs: [__dirname + "/interceptor/**/*.interceptor.js"]
});