网上订餐系统后台代码bug记录与解决

<!-- 配置数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.cj.jdbc.Driver" />
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/restrant?useSSL=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=UTC" />
        <property name="user" value="root" />
        <property name="password" value="xiaoyanzi" />
        <property name="minPoolSize" value="5" />
        <property name="maxPoolSize" value="10" />
    </bean>

<!-- 配置 Hibernate的基本属性 -->
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.MySQL5Dialect
                </prop>
                <prop key="hibernate.show_sql">true</prop>
            </props>
        </property>