hibernate基础之无法自动创建表总结

时间:2023-03-08 15:57:26

  刚刚接触Hibernate尝试写一个事例项目,但是搞了一天硬是苦逼的没弄通,一直的报无法创建表,现在就把这些经验给大家分享一下:

  1、书写问题:

<property name="hbm2ddl.auto">create</property>

  中间可以是create或update,当无法创建表时,大家一定要注意检查一下自己写的是否正确

  2.Mapping的映射文件有重名的,如:

<mapping resource="com/runsky/domain/Status.hbm.xml" />
<mapping resource="com/runsky/domain/Status.hbm.xml" />

  3.表中有关键字,如:
  order,level,address,degree,from等。(本人就是使用了from关键字)

  4.在配置文件中不小心写了两个同名属性,如:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="org.hibernate.auction"> <class name="com.runsky.domain.AdditionalInformation"
table="AdditionalInformation" lazy="false">
<id name="id" column ="ID" length="">
<generator class="uuid.hex"/>
</id>
<property name="tag" column ="tag" />
<property name="content" column ="content" />
<property name="id" column ="id" />
</class>
</hibernate-mapping>

  5.全类名写错了