Java 求助

[abokchoy]

public class Test{
    private String field;
    
    private String field2;
    //自定义校验规则
    @AssertTrue(message="个人基本信息-证件号码格式错误", groups = {Group.PC.class})
    public boolean isValid() {
        return "A".equals(this.field) ? isTrue(this.field2) : true;
    }
}

public class ValidateUtil {
    public static <T> void validate(T t, Class<?>... groups) throws ValidationException {
        Validator validatorFactory = Validation.buildDefaultValidatorFactory().getValidator();
        Set<ConstraintViolation<T>> errors = validatorFactory.validate(t, groups);
        if (!errors.isEmpty()) {
            for (ConstraintViolation<T> violation : errors) {
                throw new ValidationException(violation.getMessage());
            }
        }
    }
}

我在使用 ValidateUtil.validate(test)，如果函数名是 isValid()可以校验，如果不带 is ，valid()就不能校验，求指教

[Belmode]

public Boolean valid() 试试

[ma836323493]

那你就进到 validatorFactory.validate 看看是怎么回事

[abokchoy]

@Belmode 试了，不行

[abokchoy]

```java
public final <T> Set<ConstraintViolation<T>> validate(T object, Class<?>... groups) {
Contracts.assertNotNull(object, Messages.MESSAGES.validatedObjectMustNotBeNull());
ValidationContext<T> validationContext = this.getValidationContextBuilder().forValidate(object);
if (!validationContext.getRootBeanMetaData().hasConstraints()) {
return Collections.emptySet();
} else {
ValidationOrder validationOrder = this.determineGroupValidationOrder(groups);
ValueContext<?, Object> valueContext = ValueContext.getLocalExecutionContext(this.parameterNameProvider, object, validationContext.getRootBeanMetaData(), PathImpl.createRootPath());
return this.validateInContext(validationContext, valueContext, validationOrder);
}
}

public <T> ValidationContext<T> forValidate(T rootBean) {
Class<T> rootBeanClass = rootBean.getClass();
return new ValidationContext(this.constraintValidatorManager, this.messageInterpolator, this.constraintValidatorFactory, this.traversableResolver, (ExecutableParameterNameProvider)null, this.clockProvider, this.failFast, rootBean, rootBeanClass, this.beanMetaDataManager.getBeanMetaData(rootBeanClass), (Executable)null, (Object[])null, (Object)null);
}

```
反射拿了对象的类信息

[sijue]

public class AssertTrueValidator implements ConstraintValidator<AssertTrue, Boolean> {

@Override
public boolean isValid(Boolean bool, ConstraintValidatorContext constraintValidatorContext) {
//null values are valid
return bool == null || bool;
}

}

public interface ConstraintValidator<A extends Annotation, T> {
xxxx
}
-- 注解中指定的方法名是 isValid

[lvxiaomao]

报错信息贴一些呗

[gitdoit]

https://stackoverflow.com/questions/12935360/bean-validation-on-method/12950573#12950573

[chendy]

因为 valid 是一个普通方法，isValid 是 boolean 类型的 getter 方法
校验只校验 getter 方法（印象里好像还有字段

[abokchoy]

@gitdoit 多谢多谢