java实体List校验某个属性值是否唯一

实体类

@Data
public class FacilityRepairConfigDto implements Serializable {

    private String number;

    private String name;
}

检查序号唯一

int count= dtoList.stream()
	.map(FacilityRepairConfigDto::getNumber)
	.distinct()
	.collect(Collectors.toList())
	.size();
    
if (dtoList.size()!=count){
	return ResultForm.createErrorResultForm(false, "序号重复数据！");
}