How do I split up data from a hyper JSON body so I have a hashmap with multiple keys and values?

Question

I've managed to extract data from a POST method in hyper using the following:

use hyper::service::{make_service_fn, service_fn}; use hyper::{Body, Method, Request, Response, Server}; use std::convert::Infallible; use std::net::SocketAddr; use tokio; async fn handle(_req: Request<Body>) -> Result<Response<Body>, hyper::Error> { match (_req.method(), _req.uri().path()) { (&Method::GET, "/") => Ok(Response::new(Body::from("this is a get"))), (&Method::POST, "/") => { let byte_stream = hyper::body::to_bytes(_req).await?; let _params = form_urlencoded::parse(&byte_stream) .into_owned() .collect::<HashMap<String, String>>();

However, the whole JSON body is just one key in the HashMap now. How do I split it up so I have a hashmap with multiple keys and values as opposed to one key that's the entire body?

[dependencies] futures = "0.1" hyper = "0.13" pretty_env_logger = "0.3.1" url = "2.1.1" tokio = { version = "0.2", features = ["macros", "tcp"] } bytes = "0.5"

Please write a minimal reproducible example. Your code does not compile, so a potential answerer cannot easily see the same problem that you are facing: the function just stops in the middle and there are missing imports (form_urlencoded I guess comes from the url crate?). — Peter Hall
– Peter Hall, Commented Mar 24, 2020 at 10:58

Shepmaster · Accepted Answer · 2020-03-24 13:41:01Z

There is a discrepancy between your description:

However, the whole JSON body

And your code:

let _params = form_urlencoded::parse(&byte_stream)

If your data is JSON then parse it as JSON, using the serde_json crate:

let _params: HashMap<String, String> = serde_json::from_slice(&byte_stream).unwrap();

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