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Problem in connecting HIbernate, exception is no property found

sachin yadav
Ranch Hand

Joined: Nov 24, 2005
Posts: 156
I am using hibernate to connect to mySql database. My code for this in servlet.xml is:

springFirst-servlet.xml


<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverM anagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url"
value="jdbc:mysql://localhost:3306/emp" />
<property name="username" value="XXX" />
<property name="password" value="XXXXX" />
</bean>

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSes sionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="useTransactionAwareDataSource" value="true" />
<property name="mappingResources">
<list>
<value>TestForm.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="connection.pool_size">1</prop>
<prop key="hibernate.dialect">
org.hibernate.dialect.HSQLDialect
</prop>
<prop key="show_sql">true</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.cglib.use_reflection_optimizer">
false
</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.Hibernat eTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>


TestForm.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="com.sachin.first">
<class name="TestForm" table="employee1">
<id name="_name" column="eid" unsaved-value="null">
<generator class="assigned"></generator>
</id>
<property name="_comments" type="string">
<column name="ename"></column>
</property>
</class>
</hibernate-mapping>


TestForm.java


package com.sachin.first;

public class TestForm
{
private String _name = "";
private String _comments = "";


public String getName()
{
return _name;
}

public void setName(String name)
{
_name = name;
}

public String getComments()
{
return _comments;
}

public void setComments(String comments)
{
_comments = comments;
}


}


and the error is:


Exception

javax.servlet.ServletException: Servlet.init() for servlet spring threw exception
org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:825)
org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:738)
org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:526)
org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:595)

root cause

org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/spring-servlet.xml]: Initialization of bean failed; nested exception is org.hibernate.PropertyNotFoundException: Could not find a getter for _name in class com.sachin.first.TestForm
org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:403)
org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:233)
org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:145)
org.springframework.beans.factory.support.DefaultL istableBeanFactory.preInstantiateSingletons(Defaul tListableBeanFactory.java:277)
org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:313)
org.springframework.web.context.support.AbstractRe freshableWebApplicationContext.refresh(AbstractRef reshableWebApplicationContext.java:139)
org.springframework.web.servlet.FrameworkServlet.c reateWebApplicationContext(FrameworkServlet.java:3 06)
org.springframework.web.servlet.FrameworkServlet.i nitWebApplicationContext(FrameworkServlet.java:251 )
org.springframework.web.servlet.FrameworkServlet.i nitServletBean(FrameworkServlet.java:220)
org.springframework.web.servlet.HttpServletBean.in it(HttpServletBean.java:112)
javax.servlet.GenericServlet.init(GenericServlet.j ava:211)
org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:825)
org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:738)
org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:526)
org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:595)





I am using tomcat. I search a lot but couldn't found the problem area. My validators are working fine along with the rest of the code but exceptions start occuring as soon as i introduce hibernate. Please suggest me what should i do
Jaikiran Pai
Marshal

Joined: Jul 20, 2005
Posts: 10202
    
166





The Hibernate POJOs follow JavaBean naming conventions. So change your hbm to:




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sachin yadav
Ranch Hand

Joined: Nov 24, 2005
Posts: 156
Thanks buddy, now it's working. Thanks for the help.
 
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subject: Problem in connecting HIbernate, exception is no property found