結構 JSON

main.rs

extern crate serde;
extern crate serde_json;

// Import this crate to derive the Serialize and Deserialize traits.
#[macro_use] extern crate serde_derive;

#[derive(Serialize, Deserialize, Debug)]
struct Point {
    x: i32,
    y: i32,
}

fn main() {
    let point = Point { x: 1, y: 2 };

    // Convert the Point to a packed JSON string. To convert it to
    // pretty JSON with indentation, use `to_string_pretty` instead.
    let serialized = serde_json::to_string(&point).unwrap();

    // Prints serialized = {"x":1,"y":2}
    println!("serialized = {}", serialized);

    // Convert the JSON string back to a Point.
    let deserialized: Point = serde_json::from_str(&serialized).unwrap();

    // Prints deserialized = Point { x: 1, y: 2 }
    println!("deserialized = {:?}", deserialized);
}

Cargo.toml

[package]
name = "serde-example"
version = "0.1.0"
build = "build.rs"

[dependencies]
serde = "0.9"
serde_json = "0.9"
serde_derive = "0.9"