使用Hibernate Validator 4.1.0。最后，我建议使用@ScriptAssert。除了它的JavaDoc:

脚本表达式可以用任何脚本或表达式编写 JSR 223(“java平台脚本编写”) 兼容的引擎可以在类路径中找到。

注意:评估是由运行在Java VM中的脚本“引擎”执行的，因此是在Java“服务器端”，而不是在某些注释中所述的“客户端”。

例子:

@ScriptAssert(lang = "javascript", script = "_this.passVerify.equals(_this.pass)")
public class MyBean {
  @Size(min=6, max=50)
  private String pass;

  private String passVerify;
}

或者使用更短的别名和null安全:

@ScriptAssert(lang = "javascript", alias = "_",
    script = "_.passVerify != null && _.passVerify.equals(_.pass)")
public class MyBean {
  @Size(min=6, max=50)
  private String pass;

  private String passVerify;
}

或者使用Java 7+ null-safe Objects.equals():

@ScriptAssert(lang = "javascript", script = "Objects.equals(_this.passVerify, _this.pass)")
public class MyBean {
  @Size(min=6, max=50)
  private String pass;

  private String passVerify;
}

尽管如此，自定义类级验证器@Matches解决方案并没有什么问题。

您需要显式地调用它。在上面的例子中，bradhouse给出了编写自定义约束的所有步骤。

在调用者类中添加此代码。

ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
validator = factory.getValidator();

Set<ConstraintViolation<yourObjectClass>> constraintViolations = validator.validate(yourObject);

在上述情况下，它将是

Set<ConstraintViolation<AccountCreateForm>> constraintViolations = validator.validate(objAccountCreateForm);

我在Nicko的解决方案中做了一个小的调整，这样就没有必要使用Apache Commons BeanUtils库，并将其替换为春季已经可用的解决方案，对于那些使用它的人来说，我可以更简单:

import org.springframework.beans.BeanWrapper;
import org.springframework.beans.PropertyAccessorFactory;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

public class FieldMatchValidator implements ConstraintValidator<FieldMatch, Object> {

    private String firstFieldName;
    private String secondFieldName;

    @Override
    public void initialize(final FieldMatch constraintAnnotation) {
        firstFieldName = constraintAnnotation.first();
        secondFieldName = constraintAnnotation.second();
    }

    @Override
    public boolean isValid(final Object object, final ConstraintValidatorContext context) {

        BeanWrapper beanWrapper = PropertyAccessorFactory.forBeanPropertyAccess(object);
        final Object firstObj = beanWrapper.getPropertyValue(firstFieldName);
        final Object secondObj = beanWrapper.getPropertyValue(secondFieldName);

        boolean isValid = firstObj == null && secondObj == null || firstObj != null && firstObj.equals(secondObj);

        if (!isValid) {
            context.disableDefaultConstraintViolation();
            context.buildConstraintViolationWithTemplate(context.getDefaultConstraintMessageTemplate())
                .addPropertyNode(firstFieldName)
                .addConstraintViolation();
        }

        return isValid;

    }
}

我建议你另一种可能的解决办法。也许不那么优雅，但更容易!

public class MyBean {
  @Size(min=6, max=50)
  private String pass;

  private String passVerify;

  @NotNull
  private LocalDate passExpiry;
  @NotNull
  private LocalDate dateOfJoining;

  @AssertTrue(message = "Fields `pass` and `passVerify` should be equal")
  // Any method name is ok als long it begins with `is`
  private boolean isValidPass() {
    //return pass == null && passVerify == null || pass.equals(passVerify);
    // Since Java 7:
    return Objects.equals(pass, passVerify);
  }

  @AssertTrue(message = "Field `passExpiry` should be later than `dateOfJoining`")
  // Other rules can also be validated in other methods
  private boolean isPassExpiryAfterDateOfJoining() {
    return dateOfJoining.isBefore(passExpiry);
  }
}

isValid()和isPassExpiryAfterDateOfJoining()方法由验证器自动调用。在ConstraintViolations中报告的属性路径将从方法名中提取:valid和passExpiryAfterDateOfJoining。

与问题相关的解决方案: 如何访问在注释属性中描述的字段

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Match {

    String field();

    String message() default "";
}

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = MatchValidator.class)
@Documented
public @interface EnableMatchConstraint {

    String message() default "Fields must match!";

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};
}

public class MatchValidator implements  ConstraintValidator<EnableMatchConstraint, Object> {

    @Override
    public void initialize(final EnableMatchConstraint constraint) {}

    @Override
    public boolean isValid(final Object o, final ConstraintValidatorContext context) {
        boolean result = true;
        try {
            String mainField, secondField, message;
            Object firstObj, secondObj;

            final Class<?> clazz = o.getClass();
            final Field[] fields = clazz.getDeclaredFields();

            for (Field field : fields) {
                if (field.isAnnotationPresent(Match.class)) {
                    mainField = field.getName();
                    secondField = field.getAnnotation(Match.class).field();
                    message = field.getAnnotation(Match.class).message();

                    if (message == null || "".equals(message))
                        message = "Fields " + mainField + " and " + secondField + " must match!";

                    firstObj = BeanUtils.getProperty(o, mainField);
                    secondObj = BeanUtils.getProperty(o, secondField);

                    result = firstObj == null && secondObj == null || firstObj != null && firstObj.equals(secondObj);
                    if (!result) {
                        context.disableDefaultConstraintViolation();
                        context.buildConstraintViolationWithTemplate(message).addPropertyNode(mainField).addConstraintViolation();
                        break;
                    }
                }
            }
        } catch (final Exception e) {
            // ignore
            //e.printStackTrace();
        }
        return result;
    }
}

如何使用它?是这样的:

@Entity
@EnableMatchConstraint
public class User {

    @NotBlank
    private String password;

    @Match(field = "password")
    private String passwordConfirmation;
}

我没有评论第一个答案的名声，但我想补充的是，我已经为获胜的答案添加了单元测试，并有以下观察:

如果第一个或字段名出错，就会出现验证错误，就好像值不匹配一样。不要被拼写错误绊倒。

@FieldMatch（first=“invalidFieldName1”， second=“validFieldName2”）

验证器将接受等效的数据类型，即这些都将通过FieldMatch:

private String stringField = "1"; private Integer integerField = new Integer(1) private int intField = 1;

如果字段的对象类型没有实现equals，则验证将失败。