首先是Bean

復制代碼
package tools;

import lombok.Data;

/**

• 車輛實體類*/
  @Data
  br/>*/
  @Data
  

  private String id;
  private String model;//型號
  private String color;//顏色
  private String volume;//排量
  private int year;//年份
  }
  復制代碼
  然後是主要方法和測試類

復制代碼
package tools;

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

public class MapTools {

public static void main(String[] args) throws Exception{
    Car car = new Car();
    car.setId("00000");
    car.setColor("black");
    car.setModel("bmw x5");
    car.setVolume("3.0L");
    car.setYear(2018);

    System.out.println(objectToMap(car));
}

/**
 * 將Object對象裏面的屬性和值轉化成Map對象
 *
 * @param obj
 * @return
 * @throws IllegalAccessException
 */
public static Map<String, Object> objectToMap(Object obj) throws IllegalAccessException {
    Map<String, Object> map = new HashMap<String,Object>();
    Class<?> clazz = obj.getClass();
    for (Field field : clazz.getDeclaredFields()) {
        field.setAccessible(true);
        String fieldName = field.getName();
        Object value = StringUtils.nvl(field.get(obj));
        map.put(fieldName, value);
    }
    return map;
}
 

}

Java對象轉換成Map