Java tutorial
/** * Copyright (c) 2005-2011 springside.org.cn * * Licensed under the Apache License, Version 2.0 (the "License"); * * $Id: Fixtures.java 1593 2011-05-11 10:37:12Z calvinxiu $ */ package cn.hxh.springside.utils.validator; import java.util.List; import java.util.Set; import javax.validation.ConstraintViolation; import javax.validation.ConstraintViolationException; import javax.validation.Validator; import org.apache.commons.lang.StringUtils; import com.google.common.collect.Lists; /** * JSR303 Validator(Hibernate Validator). * * @author badqiu * @author calvin */ public class ValidatorUtils { /** * JSR303validate, ?ConstraintViolationException. */ public static void validateWithException(Validator validator, Object object, Class<?>... groups) throws ConstraintViolationException { Set constraintViolations = validator.validate(object, groups); if (!constraintViolations.isEmpty()) { throw new ConstraintViolationException(constraintViolations); } } /** * , ?Set<ConstraintViolation>, separator. */ public static String convertMessage(Set<? extends ConstraintViolation> constraintViolations, String separator) { List<String> errorMessages = Lists.newArrayList(); for (ConstraintViolation violation : constraintViolations) { errorMessages.add(violation.getMessage()); } return StringUtils.join(errorMessages, separator); } /** * , ?ConstraintViolationExceptionSet<ConstraintViolations>, separator. */ public static String convertMessage(ConstraintViolationException e, String separator) { return convertMessage(e.getConstraintViolations(), separator); } }