Spring + Hibernate DAO injection fails in Netbeans -

i have controller class logindata.java

@controller @managedbean(name = "login") @sessionscoped public class logindata implements serializable{  @autowired private logindao logindao;  private string username; private string password;  public string getusername() {     return username; }  public void setusername(string username) {     this.username = username; }  public string getpassword() {     return password; }  public void setpassword(string password) {     this.password = password; }  public void validateuser(){     try{         logindao.login(username, password);     }catch(businessexception e){     } }  } 

i trying autowire dao , implementation:

logindao

public interface logindao {      public boolean login(string username, string password)throws businessexception;      public boolean register(string username, string password, usertype type)throws businessexception;  } 

logindaoimpl

public class logindaoimpl implements logindao{  private string username; private string password;  private sessionfactory sessionfactory;  public void setsessionfactory(sessionfactory sessionfactory) {     this.sessionfactory = sessionfactory; }  @override public boolean login(string username, string password) throws businessexception{     query query = sessionfactory.getcurrentsession().createquery(             "select u user u u.username=:un");     query.setparameter("un", username);     if(query.list().size()==0)throw new businessexception("no user in database!");     user user = (user)(query.list().get(0));     return gethashmd5(password).equals(user.getpassword()); }  @override public boolean register(string username, string password, usertype type) throws businessexception{     throw new unsupportedoperationexception("not supported yet."); //to change body of generated methods, choose tools | templates. }  public static string gethashmd5(string string) throws businessexception{     try {         messagedigest md = messagedigest.getinstance("md5");         biginteger bi = new biginteger(1, md.digest(string.getbytes()));         return bi.tostring(16);     } catch (exception ex) {         throw new businessexception(ex.getmessage());     } }  } 

i trying inject sessionfactory in dao implementation, don't know if code work. xml configuration:

dispatcher-servlet.xml

<bean class="org.springframework.web.servlet.mvc.support.controllerclassnamehandlermapping"/>  <bean id="urlmapping" class="org.springframework.web.servlet.handler.simpleurlhandlermapping">     <property name="mappings">         <props>             <prop key="index.htm">indexcontroller</prop>         </props>     </property> </bean>  <bean id="viewresolver"       class="org.springframework.web.servlet.view.internalresourceviewresolver"       p:prefix="/web-inf/jsp/"       p:suffix=".jsp" />  <!-- index controller. --> <bean name="indexcontroller"       class="org.springframework.web.servlet.mvc.parameterizableviewcontroller"       p:viewname="index" />  <bean id="logindao" class="rs.ac.bg.etf.services.logindaoimpl"/>  

web.xml

<context-param>     <param-name>contextconfiglocation</param-name>     <param-value>/web-inf/applicationcontext.xml</param-value> </context-param> <context-param>     <param-name>javax.faces.project_stage</param-name>     <param-value>development</param-value> </context-param> <listener>     <listener-class>org.springframework.web.context.contextloaderlistener</listener-class> </listener> <servlet>     <servlet-name>dispatcher</servlet-name>     <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class>     <load-on-startup>2</load-on-startup> </servlet> <servlet>     <servlet-name>faces servlet</servlet-name>     <servlet-class>javax.faces.webapp.facesservlet</servlet-class>     <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping>     <servlet-name>dispatcher</servlet-name>     <url-pattern>*.htm</url-pattern> </servlet-mapping> <servlet-mapping>     <servlet-name>faces servlet</servlet-name>     <url-pattern>/faces/*</url-pattern> </servlet-mapping> <session-config>     <session-timeout>         30     </session-timeout> </session-config> <welcome-file-list>     <welcome-file>faces/index.xhtml</welcome-file> </welcome-file-list> 

i null pointer exception when dao method called in controller jsf form. knows problem? ps: xml files generated netbeans ide.

you're missing @repository annotation autowiring work.

try this:

@repository("logindao") public class logindaoimpl implements logindao