Java – オブジェクトをマップに変換する例

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.6.3</version>
</dependency>

package com.mkyong.examples;

import java.util.List;

public class Student {

    private String name;
    private int age;
    private List<String> skills;

   //getters setters
}

package com.mkyong.examples;

import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Arrays;
import java.util.Map;

public class ObjectToMapExample {

    public static void main(String[]args) {

        ObjectMapper oMapper = new ObjectMapper();

        Student obj = new Student();
        obj.setName("mkyong");
        obj.setAge(34);
        obj.setSkills(Arrays.asList("java","node"));

       //object -> Map
        Map<String, Object> map = oMapper.convertValue(obj, Map.class);
        System.out.println(map);

    }

}

{name=mkyong, age=34, skills=[java, node]}