CODEWITHSUNDEEP
javasql-serverhibernate
Taleev Aalam
Taleev Aalam

Reputation: 49

Geting 'Entity class not found' error while mapping classes to database table by hibernate

Simple pojo class

package practice041116;
public class Cls {
public String name;
public int roll;
public Cls(){}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getRoll() {
return roll;
}
public void setRoll(int roll) {
this.roll = roll;
}
}

The main login file

package practice041116; 
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration; 
import org.hibernate.SessionFactory;
public class MainClass {
public static void main(String args[]){
Configuration cnfg=new Configuration();
cnfg.configure("hibernate.cfg.xml");
SessionFactory fact=cnfg.buildSessionFactory();
Session session=fact.openSession();        
Transaction tx=session.beginTransaction();
Cls s=new Cls();
s.setName("Taleev");
s.setRoll(23);
session.save(s);
tx.commit();

} }

The configuration file

<?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>
<property name="hibernate.connection.driver_class">
com.microsoft.sqlserver.jdbc.SQLServerDriver
</property>
<property name="hibernate.connection.url">
jdbc:microsoft:sqlserver://171.8.9.1;DatabaseName:test
</property>
<property name="hibernate.connection.username">
username
</property>
<property name="hibernate.connection.password">
password
</property>
<property name="hibernate.dialect">
org.hibernate.dialect.SQLServerDialect
</property>
<property name="show_sql">true</property>
<mapping resource="practice041116/Cls.hbm.xml" />
</session-factory>
</hibernate-configuration>

Mapping file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 
3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="Cls" table="cls">
<id name="id" column="id" type="integer"/>
<property name="name" column="NAME" type="string"/>
<property name="roll" column="ROLL" type="integer"/>
</class>
</hibernate-mapping>

I have the specified table in my database but while execute it gives Entity Class not found Exception, i have tried various answer available on the similar question such as this one and few more from other sources from the net Hierarchy of the project and the jar files used Thanks in advance and forgive me if i have done some format mistake on this question as this is the first question i am posting. Stack trace of Exception

Upvotes: 1

Views: 1245

Answers (2)

Vasu
Vasu

Reputation: 22442

Hibernate is an ORM framework which maps a Java Object (Entity Object) to a relational database table, as you did NOT map any Entity Class to a database table you are getting this exception.

Option(1): Using Annotations

You need to use @Entity (class level mapping) and @Column (element level mapping) to map the java object to a database table.

Option(2): Using mapping xml files

As sugested by David above and also you can look at here

Upvotes: 1

davidxxx
davidxxx

Reputation: 131466

In your mapping file :

<class name="Cls" table="cls">

you don't specify qualified class name but just simple class name. You should replace by :

<class name="practice041116.Cls" table="cls">

Upvotes: 3

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