1、java.lang.IllegalArgumentException: Name for parameter binding must not be null or empty! For named parameters you need to use @Param for query method parameters on Java versions < 8.错误原因：在使用@Param注解时，错误地导成了import org.apache.ibatis.annotations.Param;注解，应使用下面的注解：
import org.springframework.data.repository.query.Param;
2、@Quorg.hibernate.hql.internal.QueryExecutionRequestException: Not supported for DML operations [delete from com.yzh.maven.entity.UserInfo u where u.userName =:userName]ery("delete from UserInfo u where u.userName =:userName")解决办法：在HQL语句上面添加@Modifying注解
3、javax.persistence.TransactionRequiredException: Executing an update/delete query解决办法：在HQL语句上面添加事务注解 @Transactional
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