Sql Spring JPA：没有从DB in到DTO的转换器数据

我的存储库中有一个自定义查询。我创建了一个DTO接口，如下所示：

public interface ImagePathAndID {
    String getImagePath();
    Integer getIdProduct();
}

我的问题是：

@Query(value = "select image.image_path, product.product_id from    image\r\n" + 
            "           inner join product  on product.product_id = image.product_id\r\n" + 
            "           inner join category as c on product.category_id = c.category_id \r\n" + 
            "           where c.category_id = :id ", nativeQuery = true)
    public List<ImagePathAndID > selectAllImagePathForCategory(@Param("id") int id);

我得到了

ImagePathAndID

的3个对象，但是这个对象的值是

null

。 输出为：

null,null
null,null
null,null

---

这里的关键是定义的属性应该与接口方法命名约定完全匹配。提及

您应该修改查询和接口方法，如下所示

查询

@Query(value ="select image.image_path as imagePath, product.product_id as productId from    image\r\n" + 
        "           inner join product  on product.product_id = image.product_id\r\n" + 
        "           inner join category as c on product.category_id = c.category_id \r\n" + 
        "           where c.category_id = :id ", nativeQuery = true)
public List<ImagePathAndID > selectAllImagePathForCategory(@Param("id") int id);

---

}

这里的关键是定义的属性应该与接口方法命名约定完全匹配。提及

您应该修改查询和接口方法，如下所示

查询

@Query(value ="select image.image_path as imagePath, product.product_id as productId from    image\r\n" + 
        "           inner join product  on product.product_id = image.product_id\r\n" + 
        "           inner join category as c on product.category_id = c.category_id \r\n" + 
        "           where c.category_id = :id ", nativeQuery = true)
public List<ImagePathAndID > selectAllImagePathForCategory(@Param("id") int id);

}

public interface ImagePathAndID {
   String getImagePath();
   Integer getProductId();