<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
   
<hibernate-configuration>
    <session-factory>
        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <property name="hbm2ddl.auto">update</property>
        <property name="show_sql">true</property>
        <!-- 加了这句报另外一个错误 -->
        <property name="hibernate.current_session_context_class">thread</property>
    </session-factory>
</hibernate-configuration>