Autowired on RuntimeService throws a NullPointerException--> runtimeService Bean is null
kpmg.t...@gmail.com
i have a problem. I have a Spring application, which i have deployed on jboss.
The Deployment on the server is ok. But i think, that all Beans defined in the applicationcontext throws a NPE.
Here my applicationContext ...
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<bean id="dataSource" class="org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy">
<property name="targetDataSource">
<bean class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/camundabpm" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<context:annotation-config />
<bean id="eventService" class="com.kpmg.gbc.model.services.impl.EventServiceImpl"/>
<bean id="processEngineConfiguration" class="org.camunda.bpm.engine.spring.SpringProcessEngineConfiguration">
<property name="processEngineName" value="engine" />
<property name="dataSource" ref="dataSource" />
<property name="transactionManager" ref="transactionManager" />
<property name="databaseSchemaUpdate" value="true" />
<property name="jobExecutorActivate" value="false" />
<property name="history" value="full"/>
</bean>
<bean id="processEngine" class="org.camunda.bpm.engine.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration" />
</bean>
<bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
<bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
<bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
<bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
<bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />
</beans>
I try to get the eventService in my ManagedJSF Bean and get a NPE.
I thought that I have misconfigured The eventService.
Therefore, I simply called the Bean RuntimeService of Camunda from the applicationcontext. The RuntimeService is null and throws a NPE.
Can you please tell me my Mistake
thanks.
Marcel
@ManagedBean(name="eventManagedBean")
@RequestScoped
public class EventManagedBean implements Serializable {
@Autowired
EventService eventService;
@Autowired
RuntimeService runtimeService;
......
public String storeEventAndStartProcess(){
try{
Event event = new Event();
//eventService.saveEvent(event);
runtimeService.startProcessInstanceById("AbrechnungVonStartschulungen");
return "success";
}
catch(Exception e){
e.printStackTrace();
}
return "error";
}
Gareth
Hi Marcel,
Christian Lipphardt
kpmg.t...@gmail.com
the problem was solved after i scaned the location of jsbeans in the applicationcontext through:
<context:component-scan base-package="com.kpmg.gbc.controller.jsfbeans" />
You have to write the base package, where your JSF Beans are defined. after that I added the annotation "@Component" in the JSF Bean, where you call your Service . This indicates that this class is a component and considered as candidate for auto detection.
The problem is a Spring configuration with JSF.
Cheers
Marcel
Gareth
Thanks for the replys.
public class CamundaCustomDelegate implements JavaDelegate {
@Autowired
private static RestTemplate restTemplate;
......
and application-config.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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd ttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<context:annotation-config />
<bean id="restTemplate" class="org.springframework.web.client.RestTemplate"/>
.......
Kind Regards
Gareth
Christian Lipphardt
Gareth
Thanks Christian
<serviceTask camunda:class="com.company.bpm.camunda.delegate.CamundaDTDelegate" id="GUID-0A0200704FC6F17BC811AC8BCF4C4B6E" name="Data transformation task">application-context.xml includes the bean definition:
<bean id="camundaEmailDelegate" class="com.company.bpm.camunda.delegate.CamundaEmailDelegate"/>
BPMN element now looks like:
<serviceTask camunda:expression="#{camundaEmailDelegate}" id="GUID-0A02001860E2FBEB13DF90928BF3B139" name="EMail task">
I can confirm I have camunda-engine-spring-7.2.0 on my classpath.
Christian Lipphardt
Is this happening in a unit test or in the real server?
Do you use the shared or embedded engine?
Please attach the complete stack trace, the processes.xml and the process application class.
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