Hibernate @NotEmpty注释等效于Javax.package或替代

Is there a way to implement @NotEmpty hibernate validation without writing custom validation? javax.validation package does not contain this annotation. Only @NotNull. But it does not validate for Non-null but empty values. So I would like to see an alternative for @NotEmpty.

有没有办法在不编写自定义验证的情况下实现@NotEmpty hibernate验证？ javax.validation包不包含此批注。只有@NotNull。但它不验证非空值而是空值。所以我想看看@NotEmpty的另一种选择。

Using @Pattern? How?

使用@Pattern？怎么样？

3 个解决方案

#1

NotEmpty is just a combination of @NotNull and @Size(min=1).

NotEmpty只是@NotNull和@Size（min = 1）的组合。

#2

Please be aware that @NotEmpty will return valid for a List<> containing a null element.

请注意，@ NotTmpty将对包含null元素的List <>返回有效。

Kind of bizarre in the case of a @QueryParam List<>

在@QueryParam List <>的情况下有点怪异

As say Affe, I did a custom annotation, itself annotated with @NotNull and @Size(min=1) with a custom validator that iterates the collection and positions a boolean flag only if the elements are not null.

正如Affe所说，我做了一个自定义注释，它本身用@NotNull和@Size（min = 1）注释了一个自定义验证器，它迭代集合并仅在元素不为空时才定位布尔标志。

#3

After Bean Validation 2.0 (JSR 380), There is a new annotation @NotEmpty:

在Bean Validation 2.0（JSR 380）之后，有一个新的注释@NotEmpty：

javax.validation.constraints.NotEmpty

See:

看到：

http://beanvalidation.org/2.0/spec/#builtinconstraints-notempty

https://github.com/beanvalidation/beanvalidation-api/blob/master/src/main/java/javax/validation/constraints/NotEmpty.java

#1