java :从字符串创建嵌套的json对象

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonExample {
    public static void main(String[] args) {
        String jsonString = "{\"name\":\"John\",\"age\":30,\"address\":{\"street\":\"123 ABC St\",\"city\":\"XYZ\"}}";

        try {
            ObjectMapper objectMapper = new ObjectMapper();
            JsonNode jsonNode = objectMapper.readTree(jsonString);

            // 获取顶层属性
            String name = jsonNode.get("name").asText();
            int age = jsonNode.get("age").asInt();

            // 获取嵌套属性
            JsonNode addressNode = jsonNode.get("address");
            String street = addressNode.get("street").asText();
            String city = addressNode.get("city").asText();

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