Запуск DMN Engine в Bean не работает

Я создам DMN Engine в Bean. Механизм DMN с задачей бизнес-правил BPMN работает нормально, но не автономно. Camunda 7.6 работает с JBoss-EAP 7 (тот же дистрибутив WildFly), и я думаю, что модули находятся в правильных местах. Но следующий код выдает сообщение об ошибке.

DmnEngine dmnEngine = DmnEngineConfiguration.createDefaultDmnEngineConfiguration().buildEngine();

DecisionService мне недостаточно, потому что я хочу прочитать входные данные из DecisionLogic.

Caused by: java.lang.NoClassDefFoundError: javax/el/ELContext
    at org.camunda.bpm.dmn.engine.impl.DefaultDmnEngineConfiguration.initElProvider(DefaultDmnEngineConfiguration.java:128)
    at org.camunda.bpm.dmn.engine.impl.DefaultDmnEngineConfiguration.init(DefaultDmnEngineConfiguration.java:78)
    at org.camunda.bpm.dmn.engine.impl.DefaultDmnEngineConfiguration.buildEngine(DefaultDmnEngineConfiguration.java:69)
    at // DmnEngineConfiguration.createDefaultDmnEngineConfiguration().buildEngine();
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
    at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:82)
    at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:93)
    at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
    at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:64)
    at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:83)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
    at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:52)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
    at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInCallerTx(CMTTxInterceptor.java:254)
    ... 324 more
Caused by: java.lang.ClassNotFoundException: javax.el.ELContext from [Module "org.camunda.bpm.dmn.camunda-engine-dmn:main" from local module loader @66133adc (finder: local module finder @7bfcd12c (roots: [JBOSS_HOME]\modules, [JBOSS_HOME]\modules\system\layers\base))]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:198)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:363)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:351)
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:93)
    ... 357 more

Модуль org.camunda.bpm.dmn.camunda-engine-dmn:main есть

Зависимости Maven

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.camunda.bpm</groupId>
            <artifactId>camunda-bom</artifactId>
            <version>${camunda.version}</version>
            <scope>import</scope>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>org.camunda.bpm.dmn</groupId>
            <artifactId>camunda-engine-dmn-bom</artifactId>
            <version>${camunda.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        ...
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.camunda.bpm</groupId>
        <artifactId>camunda-engine</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.camunda.bpm.dmn</groupId>
        <artifactId>camunda-engine-dmn</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.camunda.bpm.javaee</groupId>
        <artifactId>camunda-ejb-client</artifactId>
    </dependency>
    <dependency>
        <groupId>org.camunda.bpm</groupId>
        <artifactId>camunda-engine-cdi</artifactId>
    </dependency>
    ...
<dependencies>

camunda jboss-eap-7
person jklee    schedule 21.04.2017    source источник

Ответы (2)


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1
arrow_downward

вам необходимо предоставить реализацию для ELContext.

Добавлять

<dependency>
  <groupId>de.odysseus.juel</groupId>
  <artifactId>juel</artifactId>
  <version>2.1.3</version>
</dependency>

к вашим зависимостям.

person Jan Galinski    schedule 22.04.2017
comment
Привет, ян, исключение все еще идет. И я думаю, что camunda-engine-feel-juel-7.6.0.jar и camunda-engine-feel-api-7.6.0.jar содержат необходимые зависимости. - person jklee; 24.04.2017

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0
arrow_downward

Я использую обходной путь/хак, чтобы получить DMNEngine из processEngine.

ProcessEngineConfiguration processEngineConfiguration = processEngine.getProcessEngineConfiguration();

Method method;
DmnEngine dmnEngine;
try {
    method = ProcessEngineConfigurationImpl.class.getMethod("getDmnEngine");
    dmnEngine = (DmnEngine) method.invoke(processEngineConfiguration);

} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException
        | SecurityException e) {
    e.printStackTrace();
}
person jklee    schedule 24.04.2017