Jackson将动态json转换为map

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.util.Map;

public class JsonToMapExample {
    public static void main(String[] args) {
        String json = "{\"name\":\"John\",\"age\":30,\"city\":\"New York\"}";

        ObjectMapper objectMapper = new ObjectMapper();

        try {
            // 将JSON转换为Map
            Map<String, Object> map = objectMapper.readValue(json, Map.class);

            // 访问Map中的数据
            String name = (String) map.get("name");
            int age = (int) map.get("age");
            String city = (String) map.get("city");

            System.out.println("Name: " + name);
            System.out.println("Age: " + age);
            System.out.println("City: " + city);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}