hibernate hbm异常net.sf.hibernate.MappingException: An association from
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public class LoginUser implements java.io.Serializable {
? private String id;
? private User user;
? private String loginname;
? private String passwd;
? }
? public class User implements java.io.Serializable {
? private String userid;
? private String name;
? private int age;
? }
? 为了省地,我没有写那些set,get方法
? LoginUser.hbm.xml
? <hibernate-mapping>
? <class name="com.my.test.LoginUser" table="loginuser">
? <id name="id" type="string" >
? <column name="id" sql-type="char(32)" not-null="true"/>
? <generator />
? <property name="passwd" />
?
? <one-to-one name="user" constrained="true"/>
? </class>
? </hibernate-mapping>
?
? User.hbm.xml
? <class name="com.my.test.User" table="user2">
? <id name="id" type="string" >
? <column name="id" sql-type="char(32)" not-null="true"/>
? <generator />
? <property name="age" />
? </class>
?
? 当我SchemaExport LoginUser.hbm.xml时,总是异常
? [java] net.sf.hibernate.MappingException: An association from the table loginuser refers to an unmapped class: com.my.test.User
? [java] at net.sf.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:682)
? [java] at net.sf.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:666)
? [java] at net.sf.hibernate.cfg.Configuration.generateDropSchemaScript(Configuration.java:459)
? [java] at net.sf.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:58)
?
? 这是为什么? 什么情况总是出这种异常呢?

------解决方法--------------------
LoginUser.hbm.xml
? User.hbm.xml
?
? 解析的时候，先解析LoginUser再解析User。而此时User尚未解析，SchemaExport找不到User类，必然报错。