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/**
 * Copyright 2013-2015 JueYue ([email protected])
 *   
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jeecgframework.poi.util;

import java.util.Set;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;

/**
 * HIBERNATE 校验工具类
 * @author JueYue
 *  2015年11月11日 下午10:04:07
 */
public class PoiValidationUtil {

    private final static Validator validator;

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

    public static String validation(Object obj) {
        Set> set = validator.validate(obj);
        if (set.size() > 0) {
            return getValidateErrMsg(set);
        }
        return null;
    }

    private static String getValidateErrMsg(Set> set) {
        StringBuilder builder = new StringBuilder();
        for (ConstraintViolation