字段验证工具类

package com.aa.bb.cc.common.utils;


import com.aa.bb.cc.common.exception.BusinessException;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import java.util.Set;


public class ValidatorUtil {
    private static Validator validator;

    static {
        validator = Validation.buildDefaultValidatorFactory().getValidator();
    }

    /**
     * 校验对象
     * 
     * @param object 待校验对象
     * @param groups 待校验的组
     * @throws BusinessException 校验不通过，则报RRException异常
     */
    public static String validateEntity(Object object, Class<?>... groups)
            throws BusinessException {
        Set<ConstraintViolation<Object>> constraintViolations = validator.validate(object, groups);
        if (!constraintViolations.isEmpty()) {
            StringBuilder msg = new StringBuilder();
            for (ConstraintViolation<Object> constraint : constraintViolations) {
                msg.append(constraint.getMessage()).append("<br>");
            }

            return msg.toString();
        }
        return null;
    }

	/**
	 * 校验对象
	 * @param entity
	 * @param exceptFields
	 * @param <T>
	 */
	public static <T> void validate(T entity, String... exceptFields){
		Set<ConstraintViolation<T>> set=validator.validate(entity);
		if(CollectionUtils.isNotEmpty(set)){
			for (ConstraintViolation<T> item : set) {
				String field = item.getPropertyPath().toString();
				if (!isExcept(field, exceptFields)) {
					String message = item.getMessage();
					throw new BusinessException(1,message);
				}
			}
		}
	}

	/**
	 * 判断属性是否属于例外属性列表
	 * @param field
	 * @param exceptFields
	 * @return
	 */
	private static boolean isExcept(String field, String... exceptFields) {
		if (exceptFields == null)
			return false;
		for (String obj : exceptFields) {
			if (StringUtils.isNotBlank(obj) && field.indexOf(obj) >= 0) {
				return true;
			}
		}
		return false;
	}
}