显示校验信息
您已经使用注解为视频游戏销售数据设置了质量控制。现在请在包含错误的数据上运行校验，看看会打印出哪些信息。这些不合规数据缺少 platform，year 早于 1960，且 sales 为负数，这些都违反了注解中指定的约束。请校验这条视频游戏销售数据，并打印所有违规信息。
已为您导入 jakarta 包。
本练习是课程的一部分
Java 数据清洗
练习说明
- 当数据违反某个约束时，打印违规信息。
- 使用
validator对该视频游戏销售记录执行校验。
交互式实操练习
通过完成这段示例代码来试试这个练习。
public class VideoGameSale {
@NotNull(message = "Name cannot be empty")
private String name;
@NotNull(message = "Platform cannot be empty")
private String platform;
@Min(value = 1960, message = "Year must be greater than 1960")
private Integer year;
@Min(value = 0, message = "Sales amount must be positive")
private Double sales;
public VideoGameSale(String name, String platform, Integer year, Double sales) {
this.name = name;
this.platform = platform;
this.year = year;
this.sales = sales;
}
public static void main(String[] args) {
VideoGameSale sale = new VideoGameSale(
"Super Mario Bros.", null, 1950,
-29.08);
Set> violations =
SalesValidator.validateSale(sale);
// Print the violation message
violations.forEach(violation ->
System.out.println(____.____()));
if (!violations.isEmpty()) throw new ConstraintViolationException(violations);
}
}
class SalesValidator {
private static final ValidatorFactory factory =
Validation.buildDefaultValidatorFactory();
private static final Validator validator = factory.getValidator();
public static Set> validateSale(VideoGameSale sale) {
// Validate the video game sale
return ____.____(sale);
}
}