name: "JiangBo".to_owned(), age: 44, languages: vec!["Rust".to_owned(), "Java".to_owned()], let json = serde_json::to_string(&person).unwrap(); println!("{}", json);

Cargo.toml

[package]
edition = "2021"
name = "game"
version = "0.1.0"
[dependencies]
serde = {version = "1.0.130", features = ["derive"]}
serde_json = "1.0.72"
使用 serde 将一个对象转为 JSON。