topic Re: ProcessEngine null in Alfresco Archive

ProcessEngine null

arag — Thu, 24 Nov 2016 15:19:35 GMT

HelloI need help please!I have a problem with the ProcessEngine when i try to init.My code public static void main(String[] args) { new update().updateFlow(); } public void updateFlow() { pe = ProcessEngines.getDefaultProcessEngine(); System.out.println("cargando"+pe);

Re: ProcessEngine null

motorina0 — Thu, 24 Nov 2016 20:28:36 GMT

Hi,

   Can you please:
     - provide the full stack trace (to see on what line the NPE occurs)
     - post the entire class using <code> <code> </code> tags
br,
Vlad

Re: ProcessEngine null

arag — Thu, 24 Nov 2016 20:57:19 GMT

thats all only show me java.lang.NullPointerException i work with netbeans.

Re: ProcessEngine null

arag — Thu, 24 Nov 2016 21:20:26 GMT

now show me this

Exception in thread "main" java.lang.NoClassDefFoundError: org/activiti/engine/ProcessEngines
at com.test.org.flow.update.updateFlow(update.java:29)
at com.test.org.flow.update.main(update.java:25)
Caused by: java.lang.ClassNotFoundException: org.activiti.engine.ProcessEngines
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 2 more

work with activiti 6 and the configuration of my pom archive is

<code>
<dependencies>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>6.0.0.Beta4</version>
            <type>jar</type>
        </dependency>
       <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring</artifactId>
            <version>6.0.0.Beta4</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.14</version>
        </dependency>

    </dependencies>
</code>

Re: ProcessEngine null

arag — Mon, 28 Nov 2016 15:26:50 GMT

please i need help i cant understand where is the problem. I created an java application and it works fine but with maven doesn´t work please!!!!! help!!!

Re: ProcessEngine null

hari — Tue, 13 Dec 2016 09:00:39 GMT

Hi,

Looks like your processEngine itself is not created. Try with the below code by replacing Driver, URL, Username and Password appropriate to your environment.

ProcessEngine processEngineInstance = ProcessEngineConfiguration
.createStandaloneProcessEngineConfiguration()
.setJdbcDriver(<DRIVER>)
.setJdbcUrl(<URL>)
.setJdbcPassword(<PASSWORD>)
.setJdbcUsername(<USERNAME>)
.buildProcessEngine();

Re: ProcessEngine null

motorina0 — Tue, 13 Dec 2016 09:17:17 GMT

Hi Ara,

Sorry for the late reply, but only now I've received the email notification (??).

It looks like the ProcessEngine class is not in your classpath, that is why you receive "NoClassDefFoundError".

See: NoClassDefFoundError Javadoc

You must make sure that:

1. you run mvn clean install on your project, so that the activiti-engine jar is in your maven repo.

2. make sure that the activiti-engine jar is in your projects classpath before running the main class

br,

Vlad

Re: ProcessEngine null

kgastaldo — Thu, 15 Dec 2016 12:41:54 GMT

Hey Vlad - We had email notifications turned off during the migration. You shouldn't experience the delays in emails again!