找不到约束“javax.validation.constraints.Size”的验证器
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No validator could be found for constraint 'javax.validation.constraints.Size'
提问by Lucas. D
I have the following error
我有以下错误
javax.validation.UnexpectedTypeException: HV000030: No validator could be found for constraint 'javax.validation.constraints.Size' validating type 'java.lang.Integer'. Check configuration for 'discounted'
javax.validation.UnexpectedTypeException：HV000030：找不到约束“javax.validation.constraints.Size”验证类型“java.lang.Integer”的验证器。检查“折扣”的配置
My code is:
我的代码是：
@Column(name= "discount_percentage")
@Size(min=0, max=90)
@Min(0)
@Max(90)
private Integer discountPercentage = 0;
I set it to 0 because i was getting a NullPointerException when loading my view. And is Integer because i was reading in others question, and some people says that sometimes there are problems when using @Size with primitive types.
我将它设置为 0，因为我在加载视图时收到 NullPointerException。并且是整数，因为我正在阅读其他问题，有些人说有时将@Size 与原始类型一起使用时会出现问题。
What should i do? Thanks in advance.
我该怎么办？提前致谢。
回答by M?nh Quy?t Nguy?n
@Sizeis not used to validate min/max.
@Size不用于验证最小值/最大值。
It's used to validate size of collections, length of strings, etc.
它用于验证集合的大小、字符串的长度等。
In this case you should use @Min, @Maxinstead.
在这种情况下，您应该使用@Min,@Max代替。
Refer here for complete document: https://docs.oracle.com/javaee/7/api/javax/validation/constraints/Size.html
请参阅此处获取完整文档：https: //docs.oracle.com/javaee/7/api/javax/validation/constraints/Size.html
回答by Amit Bera
@Sizeis a Bean Validation annotation that validates that the associated Stringhas a value whose lengthis bounded by the minimum and maximumvalues. And as your exceptionsays it does not apply to Integertype.
@Size是一个 Bean Validation 注释，用于验证关联String的值length是否受这些minimum and maximum值限制。正如您exception所说，它不适用于Integer类型。
Use: @Range
用： @Range
@Column(name= "discount_percentage")
@Range(min=0, max=90)
private Integer discountPercentage = 0;
Or you cloud also use only @Max or @Minand that will work too. For more info please take a look on thislink.
或者你也只使用云@Max or @Min，那也行。有关更多信息，请查看此链接。
