我正在尝试做一个简单的hibernate程序。我正在遵循此tutorial中给出的步骤。
我得到的错误是
org.hibernate.MappingNotFoundException: resource: org.manu.dtd.UserDetails not found
at org.hibernate.cfg.Configuration.addResource(Configuration.java:799)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:2344)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:2310)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2290)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2243)
at org.hibernate.cfg.Configuration.configure(Configuration.java:2158)
at org.manu.dtd.TestHibernate.main(TestHibernate.java:16)
这是我的文件夹结构
带有注释的我的persitence类是
package org.manu.dtd;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
public class UserDetails {
@Id
private int userId;
private String userName;
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
}
我的hibernate.cfg.xml文件是
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="connection.url">jdbc:oracle:thin:@localhost:1521:XE</property>
<property name="connection.username">user</property>
<property name="connection.password">password</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.Oracle10gDialect</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">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>
<mapping resource="org.manu.dtd.UserDetails"/>
</session-factory>
</hibernate-configuration>
最后我的主要节目是
package org.manu.dtd;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class TestHibernate {
public static void main(String[] args) {
UserDetails user = new UserDetails();
user.setUserId(23);
user.setUserName("Renu");
System.out.println("setting values complete");
try {
SessionFactory sF = new Configuration().configure("hibernate.cfg.xml").buildSessionFactory();
Session session = sF.openSession();
session.beginTransaction();
session.save(user);
session.getTransaction().commit();
}
catch (HibernateException he) {
he.printStackTrace();
}
}
}
任何人都可以帮我解决这个问题。
答案 0 :(得分:14)
看起来它可以更容易修复。您应该使用<mapping class=..>
而不是<mapping resource=..>
作为资源来映射描述实体等的其他xml文件。 Here是官方教程中的一个小例子
答案 1 :(得分:0)
为hibernate配置映射文件提供完全限定名称,
SessionFactory sF = new Configuration().
configure("/org/manu/dtd/hibernate.cfg.xml").buildSessionFactory();