Java 为什么我得到MappingNotFound异常
您好,映射我的hibernate时出现异常: 初始SessionFactory创建失败。org.hibernate.MappingNotFoundException:资源:bbstats/domain/User.hbm.xml未找到 线程“main”java.lang.ExceptionInInitializeError中出现异常 这是我的hibernate.cfg.xml:Java 为什么我得到MappingNotFound异常,java,database,hibernate,mapping,Java,Database,Hibernate,Mapping,您好,映射我的hibernate时出现异常: 初始SessionFactory创建失败。org.hibernate.MappingNotFoundException:资源:bbstats/domain/User.hbm.xml未找到 线程“main”java.lang.ExceptionInInitializeError中出现异常 这是我的hibernate.cfg.xml: <?xml version='1.0' encoding='utf-8'?> <!DOC
<?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>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://sql10.lh.pl:3306/zamocno_bb</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">false</property>
<property name="hbm2ddl.auto">validate</property>
<mapping resource="bbstats/domain/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
和HibernateUtil.class:
package bbstats.util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil
{
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
try {
return new Configuration()
.configure()
.buildSessionFactory();
} catch (Throwable ex) {
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
}
目录结构:
问题出在您的User.hbm.xml 这里
删除类的完全限定名,因为您已经在此
行中提供了类的包名
使用以下代码更新您的User.hbm.xml
<?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">
<hibernate-mapping package="bbstats.domain">
<class name="Users" table="USERS">
<id name="id" column="ID">
<generator class="native"/>
</id>
<property name="title" column="nick"/>
</class>
</hibernate-mapping>
注意:
您的pojo名称是Users.java我建议您根据您的域对象将User.hbm.xml重命名为Users.hbm.xml,以便于阅读。确保在Eclipse中java构建路径必须反映*/.xml。 右键单击项目>属性>Java构建路径>源代码>添加*/.xml
(生成路径上的源文件夹,包括**.xml)尝试将映射文件移动到src/main/resources下的正确文件夹结构。请添加建议作为注释:)
package bbstats.util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil
{
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
try {
return new Configuration()
.configure()
.buildSessionFactory();
} catch (Throwable ex) {
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
}
<class name="bbstats.domain.Users" table="USERS">
<id name="id" column="ID">
<generator class="native"/>
</id>
<property name="title" column="nick"/>
</class>
<?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">
<hibernate-mapping package="bbstats.domain">
<class name="Users" table="USERS">
<id name="id" column="ID">
<generator class="native"/>
</id>
<property name="title" column="nick"/>
</class>
</hibernate-mapping>