org.hibernate
         
     
      hibernate-validator
         
     
      4.2.0.Final
     
    

import org.hibernate.validator.HibernateValidator;import javax.validation.ConstraintViolation;import javax.validation.Validation;import javax.validation.Validator;import java.util.ArrayList;import java.util.List;import java.util.Set;/** * 注解验证参数. * * @author xiongjinteng@gmail.com */public class BeanValidatorsUtil {    /**     * 使用hibernate的注解来进行验证     */    private static final Validator validator = Validation.byProvider(HibernateValidator.class).configure()            .failFast(true).buildValidatorFactory().getValidator();    public static 
    
      void validateWithException(T obj) throws Exception {        Set
     
      
       > constraintViolations = validator.validate(obj);        // 抛出检验异常        if (constraintViolations.size() > 0) {            throw new Exception(String.format("参数校验失败:%s", constraintViolations.iterator().next().getMessage()));        }    }    public static 
       
         String[] validate(T obj) {        Set
        
         
          > constraintViolations = validator.validate(obj); if (constraintViolations.size() > 0) { List
          
            errors = new ArrayList<>(); for (ConstraintViolation
           
             constraintViolation : constraintViolations) { errors.add(constraintViolation.getMessage()); } return errors.toArray(new String[]{}); } return new String[]{}; }}