基本操作

Cargo.toml:

[package]
name?=?"json"
version?=?"0.1.0"
edition?=?"2021"

#?See?more?keys?and?their?definitions?at?https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
serde?=?{?version?=?"1",?features?=?["derive"]?}
serde_json?=?"1"
tokio?=?{?version?=?"1",?features?=?["full"]?}
warp?=?"0.3"

main.rs:

use?serde::{Deserialize,?Serialize};


#[derive(Debug,?Deserialize,?Serialize)]
struct?Person?{
????name:?String,
????age:?i64,
}

fn?main()?{
????let?json_str?=?r#"
????????????{
????????????"name":?"dashen",
????????????"age":?18
????????????}
???"#;

????let?person:?Person?=?serde_json::from_str(json_str).unwrap();
????println!("{:?}",?person)
}

輸出為：

Person?{?name:?"dashen",?age:?18?}

嵌套結構體

warp^[1]

use?serde::{Deserialize,?Serialize};
use?warp::Filter;

#[derive(Debug,?Deserialize,?Serialize)]
struct?Person?{
????name:?String,
????age:?i64,
}


#[derive(Debug,?Deserialize,?Serialize)]
struct?Demo?{
????name:?String,
????person:?Person,
}

#[tokio::main]
async?fn?main()?{
????let?hello?=?warp::path!("json")
????????.map(||?warp::reply::json(
????????????&Demo?{
????????????????name:?"geek".to_string(),
????????????????person:?Person?{
????????????????????name:?"dashen".to_string(),
????????????????????age:?28,
????????????????},
????????????}
????????));

????warp::serve(hello)
????????.run(([127,?0,?0,?1],?3030)).await;
}

返回不同的結構(一般用枚舉來解決)

use?serde::{Deserialize,?Serialize};
use?warp::Filter;

#[derive(Debug,?Deserialize,?Serialize)]
struct?Person?{
????name:?String,
????age:?i64,
}


#[derive(Debug,?Deserialize,?Serialize)]
struct?Demo?{
????name:?String,
????person:?Person,
????shape:?Shape,
}


#[derive(Debug,?Deserialize,?Serialize)]
#[serde(rename_all?=?"lowercase",?tag?=?"shape")]?//?處理成小寫，同時加一個tag區(qū)分啥形狀
enum?Shape?{
????Circle?{
????????radius:?f64,
????},

????Rectangle?{
????????length:?f64,
????????width:?f64,
????},
}


#[tokio::main]
async?fn?main()?{
????let?hello?=?warp::path!("json")
????????.map(||?warp::reply::json(
????????????&Demo?{
????????????????name:?"geek".to_string(),
????????????????person:?Person?{
????????????????????name:?"dashen".to_string(),
????????????????????age:?28,
????????????????},
????????????????shape:?Shape::Circle?{
????????????????????radius:?3.5
????????????????},
????????????}
????????));

????warp::serve(hello)
????????.run(([127,?0,?0,?1],?3030)).await;
}

參考資料