今天总结的hibernate错误。刚入门，所以错误比较简单

今天总结的hibernate异常。刚入门，所以异常比较简单
author：heaven


今天自学一个下午的hibernate，所处理过的异常如下：

异常1：
org.hibernate.MappingNotFoundException: resource: com.heaven.hibernate not found

原因：

你配置出问题了吗,注意要<mapping

resource="com/heaven/hibernate/aa.hbm.xml"/>//com/heaven/hibernate/包名


异常2：
Caused by: org.xml.sax.SAXParseException: Element type "hibernate-mapping" must be

declared.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration> 


在XXX.hbm.xml的DTD改成 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">


异常3：
Caused by: org.hibernate.MappingException: class User not found while looking for

property: id
和
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from

resource com/heaven/hibernate/User.hbm.xml
和
Caused by: java.lang.ClassNotFoundException: User

这个可能因为我没在User.hbm.xml的 <hibernate-mapping package="com.heaven.hibernate">那里定

义包这个属性，所以抛出这写异常