使用Jackson注释和动态字段反序列化JSON

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.ObjectMapper;

public class Main {
    public static void main(String[] args) {
        String json = "{\"name\":\"John\",\"age\":30,\"email\":\"john@example.com\"}";

        try {
            ObjectMapper objectMapper = new ObjectMapper();
            User user = objectMapper.readValue(json, User.class);

            System.out.println(user.getName());
            System.out.println(user.getAge());
            System.out.println(user.getEmail());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    static class User {
        @JsonProperty("name")
        private String name;

        @JsonProperty("age")
        private int age;

        @JsonProperty("email")
        private String email;

        // Getters and setters
        // ...
    }
}