BC
Posted on December 1, 2019
In this example, we will call a bitcoin web api with reqwest crate to get the json format data, then use serde_json crate to parse json to get price.
First, we add those 2 dependencies:
[dependencies]
reqwest = "0.9.22"
serde_json = "1.0.42"
Then in main.rs:
use serde_json::{Value};
use reqwest;
fn main() {
let url = "https://blockchain.info/ticker";
println!("Send request to: {}", url);
// 1st way, use .json()
let val: Value = reqwest::get(url).unwrap().json().unwrap();
println!("Bitcoin price: ${}", val["USD"]["last"]);
// 2nd way, use .text() then serde_json::from_str
let text = reqwest::get(url).unwrap().text().unwrap();
let val2: Value = serde_json::from_str(&text).unwrap();
println!("Bitcoin price: ${}", val2["USD"]["last"]);
}
Run it with cargo run:
Send request to: https://blockchain.info/ticker
Bitcoin price: $7293.05
Bitcoin price: $7293.05
💖 💪 🙅 🚩
BC
Posted on December 1, 2019
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