springboot中使用ConstraintValidatorContext验证两个字段内容相同

@Constraint(validatedBy = SameContentMatchesValidator.class)
@Target({ ElementType.FIELD })
@Retention(RetentionPolicy.RUNTIME)
public @interface SameContentMatches {
	String message() default "内容不一致";
	Class<?>[] groups() default {};
	Class<? extends Payload>[] payload() default {};
	String field(); // 新增属性，指定要比较的字段
}

@Data
public class UserModifyPasswordDTO implements UserDTO {
	@NotNull
	private String userName;
	@NotNull
	private String password;
	private String newPassword;
	@SameContentMatches(field = "newPassword")
	private String confirmPassword;
}

public class SameContentMatchesValidator implements ConstraintValidator<SameContentMatches, String> {
    private String field;
    @Override
    public void initialize(SameContentMatches constraintAnnotation) {
        this.field = constraintAnnotation.field();
    }
    @Override
    public boolean isValid(String object, final ConstraintValidatorContext context) {
        return true;
    }
}

@Constraint(validatedBy = SameContentMatchesValidator.class)
@Target({ ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
public @interface SameContentMatches {
	String message() default "内容不一致";
	Class<?>[] groups() default {};
	Class<? extends Payload>[] payload() default {};
	/**
	 * 源字段名
	 * @return
	 */
	String sourceField();
	/**
	 * 目标字段名
	 * @return
	 */
	String destinationField();
}
public class SameContentMatchesValidator implements ConstraintValidator<SameContentMatches, Object> {
	private String sourceField;
	private String destinationField;
	@Override
	public void initialize(SameContentMatches constraintAnnotation) {
		this.sourceField = constraintAnnotation.sourceField();
		this.destinationField = constraintAnnotation.destinationField();
	}
	@Override
	public boolean isValid(Object o, final ConstraintValidatorContext context) {
		final Object sourceFieldVal = BeanUtil.getProperty(o, this.sourceField);
		final Object destinationFieldVal = BeanUtil.getProperty(o, this.destinationField);
		return sourceFieldVal.equals(destinationFieldVal);
	}
}
@Data
@SameContentMatches(sourceField = "confirmPassword", destinationField = "newPassword")
public class UserModifyPasswordDTO implements UserDTO {
	@NotNull
	private String userName;
	@NotNull
	private String password;
	private String newPassword;
	private String confirmPassword;
}