Java org.hibernate.MappingNotFoundException
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org.hibernate.MappingNotFoundException
提问by rainu
I am trying to do a simple hibernate program. I am following the steps given in this tutorial.
我正在尝试做一个简单的休眠程序。我正在按照本教程中给出的步骤操作。
The Error that I am getting is
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)
Here is my folder structure
这是我的文件夹结构
My persitence class with annotations is
我的带有注释的持久性类是
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;
}
}
My hibernate.cfg.xml file is
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>
And finally my main program is
最后我的主程序是
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();
}
}
}
Can anyone please help me out to resolve this issue.
任何人都可以帮我解决这个问题。
采纳答案by Joel Witteveen
Well it looks it can be fixed even easier. You should use <mapping class=..>instead of <mapping resource=..>as resources is for mapping other xml files describing entities and such. Hereis small example from the offical tutorials
好吧，看起来它可以更容易地修复。您应该使用<mapping class=..>而不是<mapping resource=..>因为资源用于映射描述实体等的其他 xml 文件。这是来自官方教程的小例子
回答by Surendheran
Provide fully qualified name for hibernate configuration mapping file,
为休眠配置映射文件提供完全限定的名称，
SessionFactory sF = new Configuration().
configure("/org/manu/dtd/hibernate.cfg.xml").buildSessionFactory();
