将JSON映射到包含map的自定义对象

import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;
import java.util.Map;

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

        ObjectMapper objectMapper = new ObjectMapper();

        try {
            // 将JSON映射到包含map的自定义对象
            CustomObject customObject = objectMapper.readValue(json, CustomObject.class);

            // 获取map属性的值
            Map<String, Object> map = customObject.getMap();

            // 打印结果
            System.out.println("Name: " + map.get("name"));
            System.out.println("Age: " + map.get("age"));
            System.out.println("City: " + map.get("city"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

class CustomObject {
    private Map<String, Object> map;

    public Map<String, Object> getMap() {
        return map;
    }

    public void setMap(Map<String, Object> map) {
        this.map = map;
    }
}