rustHow to convert struct to JSON string in Rust?

Converting a struct to a JSON string in Rust can be done using the serde crate. serde provides a set of macros to serialize and deserialize data structures to and from JSON.

Example code

use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize)]
struct Person {
    name: String,
    age: u8,
}

fn main() {
    let person = Person {
        name: "John".to_string(),
        age: 30,
    };

    let json_string = serde_json::to_string(&person).unwrap();
    println!("{}", json_string);
}

Output example

{"name":"John","age":30}

Code explanation

• use serde::{Serialize, Deserialize};: imports the Serialize and Deserialize traits from the serde crate.
• #[derive(Serialize, Deserialize)]: derives the Serialize and Deserialize traits for the Person struct.
• serde_json::to_string(&person).unwrap(): serializes the person struct to a JSON string.

Helpful links

• serde crate
• serde_json crate

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