关于后端:Rust处理JSON

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)}

输入为：

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

嵌套构造体

warp

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;}

返回不同的构造(个别用枚举来解决)

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")] // 解决成小写，同时加一个tag辨别啥形态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;}

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