【Serde】结构扁平化
作者:互联网
环境
- Time 2021-12-04
- Rust 1.57.0
- serde 1.0.130
- serde_json 1.0.72
概念
参考:https://serde.rs/attr-flatten.html
示例
组合公共属性
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize, Debug)]
struct Paging {
page_number: usize,
page_size: usize,
}
#[derive(Serialize, Deserialize, Debug)]
struct Request {
name: String,
paging: Paging,
}
fn main() {
let request = Request {
name: "JiangBo".to_owned(),
paging: Paging {
page_number: 4,
page_size: 44,
},
};
let json = serde_json::to_string(&request).unwrap();
println!("{}", json);
let req: Request = serde_json::from_str(&json).unwrap();
println!("{:?}", req);
}
捕获剩余字段
use std::collections::HashMap;
use serde::{Deserialize, Serialize};
use serde_json::Value;
#[derive(Serialize, Deserialize, Debug)]
struct Request {
name: String,
#[serde(flatten)]
other: HashMap<String, Value>,
}
fn main() {
let json = r#"{
"name": "JiangBo",
"page_number": 4,
"page_size": 44
}"#;
let req: Request = serde_json::from_str(json).unwrap();
println!("{:?}", req);
println!("{}", serde_json::to_string(&req).unwrap());
}
总结
使用 serde 将多层的结构体展开成一层的结构,也可以将没有定义的字段,全部放到扩展字段中。
附录
标签:Serde,req,扁平化,Deserialize,Serialize,serde,json,page,结构 来源: https://www.cnblogs.com/jiangbo44/p/15932394.html