Angular post request to NodeJS JSON error - node.js

Question

So i am sending a POST request to a nodeJS app, my request in Angular looks like this:
export class SearchComponent {
constructor(private http: HttpClient) {}
newWord = '';
keyword = '';
onClick() {
const headers = new HttpHeaders()
.set('Authorization', 'my-auth-token')
.set('Content-Type', 'application/json');
this.http
.post('http://localhost:3000/search', JSON.stringify(this.keyword), {
responseType: 'text',
headers: headers,
})
.subscribe((data) => {
this.newWord = data;
});
}
}
When i try to console.log the request i get an Unexpected token " in JSON at position 0 error even though i tried all the solutions i could find on stackoverflow this is how my NodeJS app is set and the error:
const bodyParser = require("body-parser");
const express = require("express");
const app = express();
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.all("/*", function (req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Methods", "GET,PUT,POST,DELETE,OPTIONS");
res.header(
"Access-Control-Allow-Headers",
"Content-Type, Authorization, Content-Length, X-Requested-With"
);
next();
});
app.listen(3000, () => {
console.log("Server is running on port 3000");
});
app.post("/search", (req, res) => {
res.send(req.body);
});
The error i get is this:
SyntaxError: Unexpected token " in JSON at position 0
at JSON.parse (<anonymous>)....
Note that the this.keyword gets its value from a input field if i dont use JSON.stringify no error is happening but the req variable is "undefined".

Answer 1

Assuming you are asking how to get back the data. I'm not sure if this will work, but you can give it a try:
Under comments, see that you mean this.keyword. Here is the change I would make
going by axis format, this may be incorrect
.post('http://localhost:3000/search', JSON.stringify(this.keyword), {
responseType: 'text',
headers: headers,
})
instead, try:
.post('http://localhost:3000/search', {
keyword: this.keyword, // changed this
responseType: 'text',
headers: headers,
})
also in your server, you can change to this:
const app = express();
app.use(express.json())
app.use(express.text())
app.use(express.urlencoded({ extended: true }))
(body parser included in express now)
new to the mern stack (have never used Angular) so kind of iffy but hopefully that can help