JSR-303验证组定义默认组 [英] JSR-303 validation groups define a default group

问题描述

我有一个bean，它有很多用JSR-303验证注释注释的字段.现在有一个新的要求，其中一个字段是强制性的，但仅在某些条件下才可以.

I have a bean that has a lot of fields annotated with JSR-303 validation annotations. There is a new requirement now that one of the fields is mandatory, but only in certain conditions.

我环顾四周，找到了我需要的验证组.

I looked around and have found what I needed, validation groups.

这就是我现在拥有的:

public interface ValidatedOnCreationOnly {
}

@NotNull(groups = ValidatedOnCreationOnly.class)
private String employerId;
@Length(max = 255)
@NotNull
private String firstName;
@Length(max = 255)
@NotNull
private String lastName;

但是，当我在单元测试中运行此验证时:

However, when I run this validation in a unit test:

@Test
public void testEmployerIdCanOnlyBeSetWhenCreating() {
    EmployeeDTO dto = new EmployeeDTO();

    ValidatorFactory vf = Validation.buildDefaultValidatorFactory();
    Set<ConstraintViolation<EmployeeDTO>> violations = vf.getValidator().validate(dto, EmployeeDTO.ValidatedOnCreationOnly.class);

    assertEquals(violations.size(), 3);
}

事实证明，所有非组批注的验证都将被忽略，而我仅收到1次违规.

It turns out that all of the non-group annotated validations are ignored and I get only 1 violation.

我可以理解这种行为，但是我想知道是否有一种方法可以使该组也包括所有未注释的参数.如果没有的话，我将不得不做这样的事情:

I can understand this behaviour but I would like to know if there is a way I can make the group include all non-annotated parameters as well. If not I'd have to do something like this:

public interface AlwaysValidated {
}

public interface ValidatedOnCreationOnly extends AlwaysValidated {
}

@NotNull(groups = ValidatedOnCreationOnly.class)
private String employerId;
@Length(max = 255, groups = AlwaysValidated.class)
@NotNull(groups = AlwaysValidated.class)
private String firstName;
@Length(max = 255, groups = AlwaysValidated.class)
@NotNull(groups = AlwaysValidated.class)
private String lastName;

我正在使用的真实类具有更多字段(大约20个)，因此该方法将一种清晰的方式将验证显示为混乱.

The real class I'm working with has a lot more fields (about 20), so this method turns what was a clear way of indicating the validations into a big mess.

谁能告诉我是否有更好的方法?也许像这样:

Can anyone tell me if there is a better way? Maybe something like:

vf.getValidator().validate(dto, EmployeeDTO.ValidatedOnCreationOnly.class, NonGroupSpecific.class);

我正在spring项目中使用它，所以如果spring还有另一种方式，我将很高兴知道.

I'm using this in a spring project so if spring has another way I'll be glad to know.

推荐答案

javax.validation.groups.Default中有一个Default组，它代表默认的Bean验证组.除非明确定义了组列表:

There is a Default group in javax.validation.groups.Default, which represents the default Bean Validation group. Unless a list of groups is explicitly defined:

• 约束属于Default组
• 验证适用于Default组

• constraints belong to the Default group
• validation applies to the Default group

您可以扩展此组:

public interface ValidatedOnCreationOnly extends Default {}

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