topic Re: Injecting UserService yields Null in Alfresco Archive

Injecting UserService yields Null

abbask — Mon, 09 May 2016 09:10:50 GMT

Hello,i am trying to inject UserService but it throws NullPointerException when i try to use it.@Component("createUser")public class CreateUser implements JavaDelegate{ private static final Logger LOG = LoggerFactory.getLogger(CreateUser.class); //inject user service and group service @Autowir

Re: Injecting UserService yields Null

vasile_dirla — Mon, 09 May 2016 12:43:00 GMT

are you sure you use this delegate like that: ${createUser}

if you use it by filling the "activiti:class" in the service task then a new instance will be created at runtime and the spring beans will not be injected.
ex:
<code>
<serviceTask id="javaService"
name="My Java Service Task"
activiti:class="org.activiti.MyJavaDelegate" />
</code>

you should use:
delegateExpression if you want to have @Autowired beans.
<code>
<serviceTask id="serviceTask" activiti:delegateExpression="${delegateExpressionBean}" />
</code>

more details here: http://www.activiti.org/userguide/#bpmnJavaServiceTask

Re: Injecting UserService yields Null

abbask — Mon, 09 May 2016 18:14:40 GMT

Hi vasila,
Thanks for your reply
I used expression and it worked