hibernatetemplate.getSessionFactory() throws NullPointerException - spring

Question

My DaoClass
#Repository("genObj")
public class GeneralQueries {
HibernateTemplate hibernatetemplate;
public HibernateTemplate getHibernatetemplate() {
return hibernatetemplate;
}
public void setHibernatetemplate(HibernateTemplate hibernatetemplate) {
this.hibernatetemplate = hibernatetemplate;
}
public String getStringfromQuery(String sql)
{
SessionFactory sessionFactory=hibernatetemplate.getSessionFactory();
Session session=sessionFactory.openSession();
String data=null;
try
{
System.out.println(sql);
data=session.createSQLQuery(sql).list().toString();
}
catch (Exception e)
{
e.printStackTrace();
}
return data;
}}
This method returns data as string
My Controller Class
#Controller
public class SchoolStudentsConfirmationContrl
{
#Autowired
SchoolStudentsConfirmationIntr schoolstdconfirmservice;
#Autowired
GeneralQueries genObj=new GeneralQueries();
#RequestMapping(value="/getData",method=RequestMethod.GET)
public ModelAndView getData(#ModelAttribute("schooldetailsform")SchoolDetailsForm formbean,HttpServletRequest request)
{
String PageHeading = "";
try
{
String district = request.getSession().getAttribute("dist_code").toString();
PageHeading = "BAS Students Confirmation for the Academic Year:"+ formbean.getAc_year() + " <br> District:"
+ genObj.getStringfromQuery("select dist_name from pmss_districts_mst where dist_code=" + district + "")+"";
mav.setViewName("showreportwithmenu");
}
catch(Exception e)
{
e.printStackTrace();
}
return mav;
}
}
Im trying to call the genObj.getStringfromQuery() method but it throws me null pointer exception at line
SessionFactory sessionFactory=hibernatetemplate.getSessionFactory();
my config file
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<context:annotation-config />
<context:component-scan base-package="cgg.gov.in.*" annotation-config="true"/>
<bean id="tiles" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass">
<value>
org.springframework.web.servlet.view.tiles3.TilesView
</value>
</property>
</bean>
<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles3.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/tiles.xml</value>
</list>
</property>
</bean>
<bean id="view" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<bean name="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="org.postgresql.Driver" />
<property name="url" value="jdbc:postgresql://x.x.x.x/test" />
<property name="username" value="postgres" />
<property name="password" value="postgres" />
</bean>
<bean class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" name="sessionFactory">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.autocommit">false</prop>
</props>
</property>
<property name="annotatedClasses" >
<list>
<value>cgg.gov.in.model.login.LoginForm</value>
</list>
</property>
</bean>
<bean class="org.springframework.orm.hibernate4.HibernateTemplate" name="hibernatetemplate">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<mvc:default-servlet-handler />
<mvc:annotation-driven />
</beans>

Answer 1

You have a hibernatetemplate bean defined. But you haven't tell to point the variable, hibernatetemplate in GeneralQueries class, to the defined bean.
You can do this in two ways,
1) Create a bean for GeneralQueries in xml and define the property as below,
<bean name="generalQueries" class="package.GeneralQueries">
<property name="hibernatetemplate" ref="hibernatetemplate" />
</bean>
You have already defined the setter. Remember to remove #Repository from GeneralQueries, if you define it as a bean in xml.
2) Autowire the hibernatetemplate in GeneralQueries as below.
#Repository("genObj")
public class GeneralQueries {
#Autowired
HibernateTemplate hibernatetemplate;
//rest of code
}
GeneralQueries must be under component-scan.
Note: Also, #m-deinum suggested, remove new GeneralQueries() from SchoolStudentsConfirmationContrl.