Java对象转换为Map

Java对象转换为Map

 
	public static Map objectToMap(Object obj) throws Exception {
		if (obj == null) {
			return null;
		}

		Map map = new HashMap();

		Field[] declaredFields = obj.getClass().getDeclaredFields();
		for (Field field : declaredFields) {
			field.setAccessible(true);
			map.put(field.getName(), field.get(obj));
		}

		return map;
	}

---

以下是示例

对象转化为Map类

package com.example.excel.Utils;

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;


public class Aaa {
    
    public static Map objectToMap(Object obj) throws Exception {
        if (obj == null) {
            return null;
        }

        Map map = new HashMap();

        Field[] declaredFields = obj.getClass().getDeclaredFields();
        for (Field field : declaredFields) {
            field.setAccessible(true);
            map.put(field.getName(), field.get(obj));
        }

        return map;
    }
}

测试类

package com.example.excel;

import com.example.excel.Utils.Aaa;
import com.example.excel.entity.Province;
import lombok.SneakyThrows;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.Map;

@SpringBootTest
class Day76ExcelApplicationTests {

 

    @Test
    public void findAll() throws Exception {
        Province province = new Province(233, "北极");
        Map map = Aaa.objectToMap(province);
        System.out.println(map);
    };
}

打印结果