java.lang.NullPointerException exception in my controller file (using Spring Hibernate Maven)
- by mrjayviper
The problem doesn't seemed to have anything to do with Hibernate. As I've commented the Hibernate stuff but I'm still getting it.
If I comment out this line
message = staffDAO.searchForStaff(search);
in my controller file, it goes through ok. But I don't see anything wrong with searchForStaff function. It's a very simple function that just returns the string "test" and run system.out.println("test").
Can you please help? thanks
But this is the error that I'm getting:
SEVERE: Servlet.service() for servlet [spring] in context with path [/directorymaven] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException
at org.flinders.staffdirectory.controllers.SearchController.showSearchResults(SearchController.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:100)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:604)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:565)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
My spring-servlet xml
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="org.flinders.staffdirectory.controllers" />
<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/resources/" />
<tx:annotation-driven />
<bean
id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
p:location="/WEB-INF/spring.properties" />
<bean
id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.databaseurl}"
p:username="${jdbc.username}"
p:password="${jdbc.password}" />
<bean
id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"
p:dataSource-ref="dataSource"
p:configLocation="${hibernate.config}"
p:packagesToScan="org.flinders.staffdirectory"/>
<bean
id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager"
p:sessionFactory-ref="sessionFactory" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"
p:viewClass="org.springframework.web.servlet.view.tiles2.TilesView" />
<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer"
p:definitions="/WEB-INF/tiles.xml" />
<bean
id="staffDAO"
class="org.flinders.staffdirectory.dao.StaffDAO"
p:sessionFactory-ref="sessionFactory" />
<!-- <bean
id="staffService"
class="org.flinders.staffdirectory.services.StaffServiceImpl"
p:staffDAO-ref="staffDAO" />-->
</beans>
This is my controller file
package org.flinders.staffdirectory.controllers;
import java.util.List;
//import org.flinders.staffdirectory.models.database.SearchResult;
import org.flinders.staffdirectory.models.misc.Search;
import org.flinders.staffdirectory.dao.StaffDAO;
//import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class SearchController {
//@Autowired
private StaffDAO staffDAO;
private String message;
@RequestMapping("/SearchStaff")
public ModelAndView showSearchResults(@ModelAttribute Search search) {
//List<SearchResult> searchResults =
message = staffDAO.searchForStaff(search);
//System.out.println(search.getSurname());
return new ModelAndView("search/SearchForm", "Search", new Search());
//return new ModelAndView("search/SearchResults", "searchResults", searchResults);
}
@RequestMapping("/SearchForm")
public ModelAndView showSearchForm() {
return new ModelAndView("search/SearchForm", "search", new Search());
}
}
my dao class
package org.flinders.staffdirectory.dao;
import java.util.List;
import org.hibernate.SessionFactory;
//import org.springframework.beans.factory.annotation.Autowired;
import org.flinders.staffdirectory.models.database.SearchResult;
import org.flinders.staffdirectory.models.misc.Search;
public class StaffDAO {
//@Autowired
private SessionFactory sessionFactory;
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public String searchForStaff(Search search) {
/*String SQL = "select distinct telsumm_id as id, telsumm_parent_id as parentId, telsumm_name_title as title, (case when substr(telsumm_surname, length(telsumm_surname) - 1, 1) = ',' then substr(telsumm_surname, 1, length(telsumm_surname) - 1) else telsumm_surname end) as surname, telsumm_preferred_name as firstname, nvl(telsumm_tele_number, '-') as telephoneNumber, nvl(telsumm_role, '-') as role, telsumm_display_department as department, lower(telsumm_entity_type) as entityType from teldirt.teld_summary where (telsumm_search_surname is not null) and not (nvl(telsumm_tele_directory,'xxx') IN ('N','S','D')) and not (telsumm_tele_number IS NULL AND telsumm_alias IS NULL) and (telsumm_alias_list = 'Y' OR (telsumm_tele_directory IN ('A','B'))) and ((nvl(telsumm_system_id_end,sysdate+1) > SYSDATE and telsumm_entity_type = 'P') or (telsumm_entity_type = 'N')) and (telsumm_search_department NOT like 'SPONSOR%')";
if (search.getSurname().length() > 0) {
SQL += " and (telsumm_search_surname like '" + search.getSurname().toUpperCase() + "%')";
}
if (search.getSurnameLike().length() > 0) {
SQL += " and (telsumm_search_soundex like soundex(('%" + search.getSurnameLike().toUpperCase() + "%'))";
}
if (search.getFirstname().length() > 0) {
SQL += " and (telsumm_search_preferred_name like '" + search.getFirstname().toUpperCase() + "%' or telsumm_search_first_name like '" + search.getFirstname() + "%')";
}
if (search.getTelephoneNumber().length() > 0) {
SQL += " and (telsumm_tele_number like '" + search.getTelephoneNumber() + "%')";
}
if (search.getDepartment().length() > 0) {
SQL += " and (telsumm_search_department like '" + search.getDepartment().toUpperCase() + "%')";
}
if (search.getRole().length() > 0) {
SQL += " and (telsumm_search_role like '" + search.getRole().toUpperCase() + "%')";
}
SQL += " order by surname, firstname";
List<Object[]> list = (List<Object[]>) sessionFactory.getCurrentSession().createQuery(SQL).list();
for(int j=0;j<list.size();j++){
Object [] obj= (Object[])list.get(j);
for(int i=0;i<obj.length;i++)
System.out.println(obj[i]);
}*/
System.out.println("test");
return "test";
}
}
