com.zyy.common.util.ParamUtil Maven / Gradle / Ivy

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package com.zyy.common.util;

import com.zyy.common.exception.ParamException;
import org.springframework.util.CollectionUtils;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.groups.Default;
import java.util.Iterator;
import java.util.Set;

/**
 * 参数校验工具类
 *
 * @author li.yang
 */
public class ParamUtil {
    /**
     * 判断参数正确性
     *
     * @param model 实体类
     * @param 泛型
     * @throws ParamException 自定义错误
     */
    public static  void validate(T model) throws ParamException {
        Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
        Set> set = validator.validate(model, Default.class);
        if (CollectionUtils.isEmpty(set)) {
            Iterator> it = set.iterator();
            if (it.hasNext()) {
                throw new ParamException(it.next().getMessage());
            }
        }
    }
}