SSH中的异常
1.这个异常出现的原因是，先建立的Customer对象以及表中，没有引用外键，后来加了一个BaseDict基础字典表，Customer把几个字段设置成了BaseDict的外键，所以在启动的时候就报错
解决的方法是：关闭hibernate配置中的自动更新
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in class path resource [applicationContext.xml]: Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.tool.schema.spi.SchemaManagementException: Unable to execute schema management to JDBC target [alter table cst_customer add constraint FKeh5g36duab8g1h051pdjfwcgd foreign key (cust_source) references base_dict (dict_id)]