[Spring+Hibernate]Invalid property

[_exp_]

I have exception in my project, i don't know how i can correct this exception???

14.02.2012 20:48:15 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet springapp
org.springframework.beans.NotWritablePropertyException: Invalid property 'factory' of bean class [springapp.dao.lmpl.ClientIpDAOlmpl]: Bean property 'factory' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

ClientIpDAOlmpl

public class ClientIpDAOlmpl  implements ClientIpDAO{
	private SessionFactory factory=null;
	
	public SessionFactory getFactory() {
		return factory;
	}
	public void setFactory(SessionFactory factory) {
		this.factory = factory;
	}


	
	public void addClientIP(ClientIP id)throws SQLException{
		Session session = null;
		try{
			session = factory.getCurrentSession();
			session.beginTransaction();
			session.save(id);
			session.getTransaction().commit();
		}catch(Exception ex){
			System.out.println("Error in addClientIP" + ex.getMessage());
		}finally{
			if(session != null && session.isOpen()){
				session.close();
			}
		}		
	}
	public boolean authenticationClient(String ip, String alias, String pass)throws SQLException{
		Session session = null;
		boolean b = false;
		ClientIP client;
		try{
			session = factory.getCurrentSession();
			session.beginTransaction();			
			client = (ClientIP)session.get(ClientIP.class,ip);			
			session.getTransaction().commit();
			if(client.getClientAlias().equals(alias) && client.getClientPass().equals(pass)){
				b = true;
			}
			else 
				b = false;
		}catch(Exception ex){
			System.out.println("Error in auntificClient" + ex.getMessage());			
		}finally{
			if(session != null && session.isOpen()){
				session.close();
			}
		
		}	
		return b;
		
	}
	
	public void deleteClientIP(ClientIP id) throws SQLException{
		Session session = null;
		try{
			session = factory.openSession();
			session.beginTransaction();
			session.delete(id);
			session.getTransaction().commit();
		}catch(Exception ex){
			System.out.println("Error in deleteClientIP" + ex.getMessage());			
		}finally{
			if(session != null && session.isOpen()){
				session.close();
			}				
		}		
	}

	
}

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
       
<bean id="propertyConfigurer"  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

    <property name="location" value="/WEB-INF/jdbc.properties" />

</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

    <property name="driverClassName" value="${jdbc.driverClassName}" />

    <property name="url" value="${jdbc.databaseurl}" />

    <property name="username" value="${jdbc.username}" />

    <property name="password" value="${jdbc.password}" />

</bean>
<bean id="mySessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
                  
                  <property name="mappingResources">
                        <list>                            
                            <value>springapp/hibernate_logic/ClientIP.hbm.xml</value> 
    						<value>springapp/hibernate_logic/StartProcess.hbm.xml</value> 
    						<value>springapp/hibernate_logic/BlockedProcess.hbm.xml</value>                  
                        </list>
                    </property>
                   <property name="hibernateProperties">
                   <props>                    
                    <prop key="hibernate.dialect">${jdbc.dialect}</prop>
                    <prop key="hibernate.show_sql">true</prop>
                   </props>
                   </property>
                    <property name="dataSource">
                        <ref bean="dataSource"/>
                    </property>
                     
                </bean>
                

<bean id="myClientDAO" class="springapp.dao.lmpl.ClientIpDAOlmpl">

    <property name="factory" ref="mySessionFactory" />

</bean>
<bean name="/mainNew.htm" class="springapp.web.ClientIpController">

<property name="clientDAO" ref="myClientDAO" />

</bean>

    <!-- the application context definition for the springapp DispatcherServlet -->

    <bean id="productManager" class="springapp.service.SimpleProductManager">
        <property name="products">
            <list>
                <ref bean="product1"/>
                <ref bean="product2"/>
                <ref bean="product3"/>
            </list>
        </property>
    </bean>

    <bean id="product1" class="springapp.domain.Product">
        <property name="description" value="Lamp"/>
        <property name="price" value="5.75"/>
    </bean>
        
    <bean id="product2" class="springapp.domain.Product">
        <property name="description" value="Table"/>
        <property name="price" value="75.25"/>
    </bean>

    <bean id="product3" class="springapp.domain.Product">
        <property name="description" value="Chair"/>
        <property name="price" value="22.79"/>
    </bean>

    <bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
        <property name="basename" value="messages"/>
    </bean>

    <bean name="/hello.htm" class="springapp.web.InventoryController">
        <property name="productManager" ref="productManager"/>
    </bean>
    
     <bean name="/priceincrease.htm" class="springapp.web.PriceIncreaseFormController">
        <property name="sessionForm" value="true"/>
        <property name="commandName" value="priceIncrease"/>
        <property name="commandClass" value="springapp.service.PriceIncrease"/>
        <property name="validator">
            <bean class="springapp.service.PriceIncreaseValidator"/>
        </property>
        <property name="formView" value="priceincrease"/>
        <property name="successView" value="hello.htm"/>
        <property name="productManager" ref="productManager"/>
    </bean>

    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

public class ClientIpController extends MultiActionController{
	private ClientIpDAO clientDAO;
	public void setClientDAO(ClientIpDAO clientDAO){
		this.clientDAO = clientDAO;
	}
	public ClientIpDAO getClientDAO(){
		return clientDAO;
	}
	
	public ModelAndView add(HttpServletRequest arg0,
			HttpServletResponse arg1,ClientIP clientIp) throws Exception {
		// TODO Auto-generated method stub
		clientDAO.addClientIP(clientIp);
		return new ModelAndView("hello");
	}
	
	}