rustHow to serialize struct to json in Rust

Serializing a struct to JSON in Rust can be done using the serde crate. This crate provides a Serialize trait that can be implemented for a struct to enable serialization.

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

Output example

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

Code explanation

1. use serde::{Serialize, Deserialize}; - This imports the Serialize and Deserialize traits from the serde crate.

2. #[derive(Serialize, Deserialize)] - This macro derives the Serialize and Deserialize traits for the Person struct.

3. let serialized = serde_json::to_string(&person).unwrap(); - This line serializes the person struct to a JSON string using the serde_json crate.

4. println!("serialized = {}", serialized); - This line prints the serialized JSON string to the console.

Helpful links

• serde crate
• serde_json crate

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