如何将WKScriptMessage.body转换为结构？

import Foundation

struct MyStruct: Codable {
    var name: String
    var age: Int
}

func convertBodyToStruct(body: Any) -> MyStruct? {
    if let jsonString = body as? String {
        let jsonData = jsonString.data(using: .utf8)
        let decoder = JSONDecoder()
        do {
            let myStruct = try decoder.decode(MyStruct.self, from: jsonData!)
            return myStruct
        } catch {
            print("Failed to convert body to struct: \(error)")
        }
    }
    return nil
}

// 示例用法
let jsonString = "{\"name\":\"John\",\"age\":30}"
let body: Any = jsonString
if let myStruct = convertBodyToStruct(body: body) {
    print("Name: \(myStruct.name)")
    print("Age: \(myStruct.age)")
}