CODEWITHSUNDEEP
javaspring
lily
lily

Reputation: 565

Why doesn't BeanCopier work in copying properties?

I want use BeanCopier to do the property copying between the following two porous

@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@EqualsAndHashCode(callSuper = true)
@TableName("t_order")
public class Order extends BaseEntity {
    private static final long serialVersionUID=1L;
    private Long userId;
    private Integer amount;
    private Long productId;
}

@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class OrderDTO {
    private Long userId;
    private Integer amount;
    private Long productId;
}

for the following codes, 

    public static void main(String[] args) {
        Order order = Order.builder().productId(3333L).userId(9999L).amount(32).build();
        OrderDTO orderDTO = new OrderDTO();
        BeanCopier orderCopier = BeanCopier.create(Order.class, OrderDTO.class, false);
        orderCopier.copy(order, orderDTO, null);
        JSONUtils.toJSONString(orderDTO);
    }

the properties of orderDTO are not set, the fields of orderDTO are all null, what is wrong?

Upvotes: 0

Views: 494

Answers (1)

Ashish Shetkar
Ashish Shetkar

Reputation: 1467

ohh there is simple thing missing , please add getters and setters , BeanCopier internally uses ReflectUtils to find getters and setters.

Please try and add those and then test.

There also a alternative -

you can simple use Spring's BeanUtils and it's copyProperties - there are multiple options available

Spring BeanUtils

You can simply use it as 

 BeanUtils.copyProperties( sourceBean , targetBean );

You can find different examples HERE

Upvotes: 1

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