如何用Rust访问未知结构的JSON串，并包含对数组的访问？以下是一个简单的示例：

use serde_json::{Value};fn main() {let json_str = r#"{"name":"John","age":30,"city":"New York","hobbies":["reading","coding","gaming"]}"#;// 解析JSON字符串let json: Value = serde_json::from_str(json_str).unwrap();// 访问特定的属性if let Some(name) = json.get("name") {println!("Name: {}", name);}if let Some(age) = json.get("age") {println!("Age: {}", age);}if let Some(city) = json.get("city") {println!("City: {}", city);}// 访问数组if let Some(hobbies) = json.get("hobbies") {if let Some(hobbies_array) = hobbies.as_array() {for hobby in hobbies_array {if let Some(hobby_str) = hobby.as_str() {println!("Hobby: {}", hobby_str);}}}}
}