java - hibernate/jpa Autowire annotation producing Nullpointer exception errors -

new java on here.

i using spring boot , working eclipse kepler make program.

is possible define autowired in regular class - or - must use in controller class?

i trying make group of functions/methods in class (valfuncsauth). 1 of methods (validateauthinfo), getting error:

java.lang.nullpointerexception

listed below.

i created "helper" function because - in different controllers - executing same code. kind of check/validation. trying put (the check/validation code) in 1 place (like function). wanted make call particular function check/validation (and not repeating same code each controller).

why getting error? there way fix this?

tia

java.lang.nullpointerexception: null     @ ccinfw.helpfulfunctions.valfuncsauth.validateauthinfo(valfuncsauth.java:121)     @ ccinfw.controller.work.workprojectcontroller.createproject(workprojectcontroller.java:97)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)     @ java.lang.reflect.method.invoke(unknown source)     @ org.springframework.web.method.support.invocablehandlermethod.doinvoke(invocablehandlermethod.java:205)     @ org.springframework.web.method.support.invocablehandlermethod.invokeforrequest(invocablehandlermethod.java:133)     @ org.springframework.web.servlet.mvc.method.annotation.servletinvocablehandlermethod.invokeandhandle(servletinvocablehandlermethod.java:97)     @ org.springframework.web.servlet.mvc.method.annotation.requestmappinghandleradapter.invokehandlermethod(requestmappinghandleradapter.java:827)     @ org.springframework.web.servlet.mvc.method.annotation.requestmappinghandleradapter.handleinternal(requestmappinghandleradapter.java:738)     @ org.springframework.web.servlet.mvc.method.abstracthandlermethodadapter.handle(abstracthandlermethodadapter.java:85)     @ org.springframework.web.servlet.dispatcherservlet.dodispatch(dispatcherservlet.java:967) 

i defined following "helper" class

public class valfuncsauth {      private static final logger logger = loggerfactory             .getlogger(customercontroller.class);     private securerandom random = new securerandom();      [... snip ...]      @autowired     private mstrstoreheaddao companydao;      [... snip ...]      public void validateauthinfo(bigdecimal tenantid,             bigdecimal authid, string authtype, string timezone)             throws exception {      [... snip ...]          try {              // company info - make sure exists             companyitem = companydao.findbytenantid(tenantid);  <<<< --- error here              if (companyitem.size() != 1) {                 throw new datainputexception(                         " => emsg-25590 - invalid tenantid passed in : ->"                                 + tenantid);             }     [... snip ...] } 

the dao

@transactional @repository public interface mstrstoreheaddao extends crudrepository<mstrstorehead, bigdecimal> {      public list<mstrstorehead> findall();      public list<mstrstorehead> findbytenantid(bigdecimal id); } 

iniitaliztion

@requestmapping(value = "/create/{tenantid}/{jobid}", method = requestmethod.post, produces = "application/json")     public responseentity<void> createjob (             @pathvariable bigdecimal tenantid,             @pathvariable bigdecimal jobid,             @requestbody workjobchargesparamiopojo input) throws exception {          valfuncsauth valfuncs = new valfuncsauth();          try {      [... snip ...]             /**              * make sure person creating record (the worker)              * authorized - convert his/her timezone              */             valfuncs.validateauthinfo(tenantid, input.getloggedinreclockid(),                     input.getloggedinreclocktype(), input.getloggedintimezone());      [... snip ...] 

the problem way initializing bean

valfuncsauth valfuncs = new valfuncsauth(); 

when initialize bean spring container not know autowired beans, need let spring container initialize object ( mark bean) annotate class component

 @component  public class valfuncsauth { 

and autowired controller

@autowired private valfuncsauth valfuncsauth;  @requestmapping(value = "/create/{tenantid}/{jobid}", method = requestmethod.post, produces = "application/json") public responseentity<void> createjob (         @pathvariable bigdecimal tenantid,         @pathvariable bigdecimal jobid,         @requestbody workjobchargesparamiopojo input) throws exception { 

now if want bean use different object on each call of api need change scope of bean prototype

@component @scope("prototype") public class valfuncsauth {