Activiti 🚀 - why was "commandExecutor" Properties always threw an exception ("NullpointException") ？

@zhaogituser what? where? where is that code running? Are you using spring? if so.. Spring is doing that injection magic. This is not an issue. Please report with all the required data for us to be able to help you

salaboy on 27 Jul 2018

@Salaboy yes use spring

zhaogituser on 27 Jul 2018

@zhaogituser ok, but we need more information and a reproducer of the problem,. Please create a simple maven project where you demonstrate how is this failing. We need to be able to run and see the issue in order to fix it. The amount of information provided here is not enough to understand what is going wrong.

salaboy on 27 Jul 2018

@Salaboy

DeploymentQuery deploymentQuery=repositoryService.createDeploymentQuery().deploymentNameLike("%"+ search+"%");
if( deploymentQuery !=null){
total=deploymentQuery.count();
rows=repositoryService.createDeploymentQuery()//创建流程查询实例
.orderByDeploymenTime().desc() //降序
.deploymentNameLike("%"+search+"%") //根据Name模糊查询
.listPage(offset/lmit, limit);
}

This my code ."deploymentQuery.count();" be caused NullPointException.

zhaogituser on 27 Jul 2018

@zhaogituser I cannot run that code, and I don't even know which version of activiti you are using.. please provide a maven project that we can run to help you.

salaboy on 27 Jul 2018

where i send my code ? email? @Salaboy

zhaogituser on 27 Jul 2018

@Salaboy I used dubbo to provide activiti services . Is this an issue?

zhaogituser on 27 Jul 2018

@Salaboy I'm sorry. English is not my native language. Can you speak Chinese .

zhaogituser on 27 Jul 2018

I use activiti version 5.19.0.2 .Here's my activi.xml .

zhaogituser on 27 Jul 2018

Activiti-LFP.zip
@Salaboy Can you see the question now? thank you

zhaogituser on 27 Jul 2018

@Salaboy Just sent you my code to your mailbox.The problem arises in "com.java.activiti.controller.DeployController" class.

zhaogituser on 27 Jul 2018

@zhaogituser no, just create a project in your github account so we can clone it and run it with maven.

salaboy on 27 Jul 2018

@zhaogituser please upload your project to a github repo. We will not download a zip file

salaboy on 27 Jul 2018

@zhaogituser you have a custom org.mybatis.spring.SqlSessionFactoryBean with custom mappers. I guess this is whats causing the issue. This overrides the Activiti specific mybatis mappers. If you want your own mappers use the example here
https://www.activiti.org/userguide/#_xml_based_mapped_statements
set your customMybatisMappers

<property name="customMybatisMappers">
        <set>
            <value>org.activiti.standalone.cfg.MyTestMapper</value>
        </set>
</property>

Or inside mybatis-config.xml you should point to all Activiti's mappers see
https://github.com/Activiti/Activiti/blob/6.x/modules/activiti-engine/src/main/resources/org/activiti/db/mapping/mappings.xml

balsarori on 27 Jul 2018

OK

zhaogituser on 27 Jul 2018

thanks .I will try it first

zhaogituser on 27 Jul 2018

@balsarori
I see the
<property name="customMybatisMappers"> <set> <value>org.activiti.standalone.cfg.MyTestMapper</value> </set> </property>
config ,but I did't know which file to put it under.

And please give me your advice.

zhaogituser on 27 Jul 2018

@zhaogituser it's a property of the process engine configuration should be in activiti-context.xml for the processEngineConfiguration.

balsarori on 27 Jul 2018

👍1

@balsarori thanks

zhaogituser on 30 Jul 2018

@Salaboy I think my problem should not be here . I don't have any mapping files, but called the count () method of the "repositoryservice" class of the activiti engine directly. When I ran debug mode into the following method,the program prompts commandexecute to be empty and throws a NullPointerException.
This is the method .public long count() { this.resultType = ResultType.COUNT; if (commandExecutor!=null) { return (Long) commandExecutor.execute(this); } return executeCount(Context.getCommandContext()); }

Because I used dubbo distribution, I put the corresponding activiti service in the dubbo-provider.xml file as well.

zhaogituser on 30 Jul 2018

@Salaboy I hope I'm not bothering you?

zhaogituser on 30 Jul 2018

@zhaogituser Please upload the full stacktrace of your NullpointException.

daisuke-yoshimoto on 30 Jul 2018

👍1

@daisuke-yoshimoto wait on

zhaogituser on 30 Jul 2018

com.alibaba.dubbo.common.bytecode.proxy1@759f72d32018-07-30 11:48:39,711 [qtp1194385648-18] ERROR [com.gw.oydCloud.common.base.BaseController] - 统一异常处理： java.lang.NullPointerException at org.activiti.engine.impl.DeploymentQueryImpl.executeCount(DeploymentQueryImpl.java:157) at org.activiti.engine.impl.AbstractQuery.count(AbstractQuery.java:159) at com.gw.oydCloud.upms.server.controller.manage.UpmsDeployController.list(UpmsDeployController.java:54) at com.gw.oydCloud.upms.server.controller.manage.UpmsDeployController$$FastClassBySpringCGLIB$$6472e0db.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85) at com.gw.oydCloud.upms.client.interceptor.LogAspect.doAround(LogAspect.java:64) 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.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:629) at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:618) at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.aspectj.AspectJAfterAdvice.invoke(AspectJAfterAdvice.java:47) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.apache.shiro.spring.security.interceptor.AopAllianceAnnotationsAuthorizingMethodInterceptor$1.proceed(AopAllianceAnnotationsAuthorizingMethodInterceptor.java:82) at org.apache.shiro.authz.aop.AuthorizingMethodInterceptor.invoke(AuthorizingMethodInterceptor.java:39) at org.apache.shiro.spring.security.interceptor.AopAllianceAnnotationsAuthorizingMethodInterceptor.invoke(AopAllianceAnnotationsAuthorizingMethodInterceptor.java:115) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) at com.gw.oydCloud.upms.server.controller.manage.UpmsDeployController$$EnhancerBySpringCGLIB$$8501a9b6.list(<generated>) 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.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:800) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) at org.eclipse.jetty.server.Server.handle(Server.java:497) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:245) at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) at java.lang.Thread.run(Thread.java:745)

@daisuke-yoshimoto

zhaogituser on 30 Jul 2018

👍3

@zhaogituser Thanks. I will check it and investigate that cause.

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto Thank you. I'm waiting for the good news. Let me explain that I used dubbo distributed.

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto Are you still there?

zhaogituser on 30 Jul 2018

@zhaogituser

I cannot find com.gw.oydCloud.upms.server.controller.manage.UpmsDeployController.list in https://github.com/Activiti/Activiti/files/2235203/Activiti-LFP.zip. So, I do not know the exact cause.

But, Perhaps it seems to be caused by commandContext being null, that is, executing DeploymentQuery directly from outside the command. So, please fix to use DeploymentQuery from RepositoryService.createDeploymentQuery().

java.lang.NullPointerException
    at org.activiti.engine.impl.DeploymentQueryImpl.executeCount(DeploymentQueryImpl.java:157)
    at org.activiti.engine.impl.AbstractQuery.count(AbstractQuery.java:159)
    at com.gw.oydCloud.upms.server.controller.manage.UpmsDeployController.list(UpmsDeployController.java:54)
    at com.gw.oydCloud.upms.server.controller.manage.UpmsDeployController$$FastClassBySpringCGLIB$$6472e0db.invoke(<generated>)

  @Override
  public long executeCount(CommandContext commandContext) {
    checkQueryOk();
    return commandContext
      .getDeploymentEntityManager()
      .findDeploymentCountByQueryCriteria(this);
  }

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto the project is demo ,not my real project .Now I'm uploading my project.

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto First, introduce you to the two necessary startup modules "oydCloud-upms-rpc-service" and "oydCloud-upms-server"

zhaogituser on 30 Jul 2018

@zhaogituser Where is your project?

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto The UpmsDeployController class of the com.gw.oydCloud.upms.server.controller.manage package .

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto sorry my project is over 10 MB.Maybe I send you email if you like .

zhaogituser on 30 Jul 2018

@zhaogituser Can you use google drive? If google drive, you can upload your project.

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto I'm sorry. I don't know what google driver is

zhaogituser on 30 Jul 2018

@zhaogituser Ok. Please upload only com.gw.oydCloud.upms.server.controller.manage.UpmsDeployController.java

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto easier .uploading...
UpmsDeployController.zip

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto The exception occurred in the list method .

zhaogituser on 30 Jul 2018

@zhaogituser Do you reproduce that exception using this file too?
UpmsDeployController.java.txt

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto I can't understand this sentence

zhaogituser on 30 Jul 2018

@zhaogituser Can you reproduce your exception yet using https://github.com/Activiti/Activiti/files/2240517/UpmsDeployController.java.txt ?

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto this class caused exception

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto is my understanding right?

zhaogituser on 30 Jul 2018

@zhaogituser OK. My fix cannot resolve your exception.
I will continue to investigate.

Can I reproduce your exception using your old project https://github.com/Activiti/Activiti/files/2235203/Activiti-LFP.zip?

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto I ‘m trying to understand your original intention.please give me some times

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto NO this exception in my real project . not my demo

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto I will try to upload the source code to GIThub ,and i will tell you

zhaogituser on 30 Jul 2018

@zhaogituser Ohh,if so, it is hard to investigate about your exception without your real project.

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto Maybe you can give me some advice to run my code

zhaogituser on 30 Jul 2018

@zhaogituser Can you use https://www.dropbox.com/h or https://drive.google.com/drive/my-drive for uploading your real project? If not so, please divide it into multiple files and upload them.

daisuke-yoshimoto on 30 Jul 2018

@daisuke-yoshimoto I'll let you know. I'll try it first. Please note the notice.

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto I just had a google driver account. I will upload my source code to google driver, tomorrow morning. Would you like to share the link with me or if you give me the gmail email address?

Thank you again for your help.

zhaogituser on 30 Jul 2018

👍1

@zhaogituser Good. If you can use google drive, you can upload your project and share its url to me in this thread.

daisuke-yoshimoto on 30 Jul 2018

👍1

@daisuke-yoshimoto How to share it safely with you?

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto what does the "in this thread " word mean .

zhaogituser on 30 Jul 2018

@zhaogituser Ohh, do you mean that you want to share your real project to only me? Not public?
If so, please share its url to https://twitter.com/daisuke_yoshimo by direct message.

daisuke-yoshimoto on 30 Jul 2018

👍1

@daisuke-yoshimoto Yeah, that's it. Just look.

zhaogituser on 30 Jul 2018

@daisuke-yoshimoto Are you there? I just uploaded it

zhaogituser on 31 Jul 2018

@daisuke-yoshimoto I don't have a twitter account. Do you have a google driver login? When I click share again, let me enter the email or name of the person to whom I shared

zhaogituser on 31 Jul 2018

@zhaogituser Ok. Please chat with me in https://gitter.im/ https://gitter.im/Activiti/Activiti7. Since you have github account, so you can use gitter.

daisuke-yoshimoto on 31 Jul 2018

@daisuke-yoshimoto I just sent you a private chat

zhaogituser on 31 Jul 2018

@zhaogituser Thanks. I will start check your project and reproduce your exception.

daisuke-yoshimoto on 31 Jul 2018

@daisuke-yoshimoto I uploaded the project that was packaged in zip

zhaogituser on 31 Jul 2018

@zhaogituser

Sorry I made you wait. After all, I could not confirm the reproducibility in your project, but I understood what seemed to be the cause. When checking applicationContext-dubbo-provider.xml, RepositoryService's bean was not retrieved from processEngine. RepositoryService's bean was directly created from new RuntimeServiceImpl(). So, if you use RepositoryService's bean, its bean cannot access processEngine and cannot get commandExecutor.

Please check examples for spring bean setting. https://github.com/Activiti/Activiti/blob/5.19.0.2/modules/activiti-spring/src/test/resources/activiti-context.xml#L45

applicationContext-dubbo-provider.xml

<!--activity-->
<bean id="runtimeService" class="org.activiti.engine.impl.RuntimeServiceImpl"/>
<dubbo:service interface="org.activiti.engine.RuntimeService" ref="runtimeService" timeout="10000"/>

<bean id="repositoryService" class="org.activiti.engine.impl.RepositoryServiceImpl"/>
<dubbo:service interface="org.activiti.engine.RepositoryService" ref="repositoryService" timeout="10000"/>

<bean id="taskService" class="org.activiti.engine.impl.TaskServiceImpl"/>
<dubbo:service interface="org.activiti.engine.TaskService" ref="taskService" timeout="10000"/>

<bean id="historyService" class="org.activiti.engine.impl.HistoryServiceImpl"/>
<dubbo:service interface="org.activiti.engine.HistoryService" ref="historyService" timeout="10000"/>

<bean id="managementService" class="org.activiti.engine.impl.ManagementServiceImpl"/>
<dubbo:service interface="org.activiti.engine.ManagementService"  ref="managementService" timeout="10000"/>

<bean id="identityService" class="org.activiti.engine.impl.IdentityServiceImpl"/>
<dubbo:service interface="org.activiti.engine.IdentityService" ref="identityService" timeout="10000"/>

<bean id="formService"  class="org.activiti.engine.impl.FormServiceImpl"/>
<dubbo:service interface="org.activiti.engine.FormService" ref="formService" timeout="100000"/>

daisuke-yoshimoto on 31 Jul 2018

👍1

I see. As you said "RepositoryService's bean was not retrieved from processEngine." .Based on this tip, I created an intermediate class to inject activiti's services into the dubbo registry .`import org.activiti.engine.RepositoryService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional
public class OydRepositoryService {

@Autowired
public RepositoryService repositoryService;

}`

@daisuke-yoshimoto

zhaogituser on 1 Aug 2018

@daisuke-yoshimoto But,I can't understand .why not use the repositoryService ( <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />") " of in activiti-context.xml to inject activiti’s service directly

zhaogituser on 1 Aug 2018

@daisuke-yoshimoto activiti-context.xml .<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean"> <property name="processEngineConfiguration" ref="processEngineConfiguration" /> </bean> <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />

dubbo-provider.xml

<dubbo:service interface="org.activiti.engine.RepositoryService" ref="repositoryService" />
Please pay attention to the thickening part . org.activiti.engine.RepositoryService is not my declare but is activiti's.

Can you understand what I explain ?

zhaogituser on 1 Aug 2018

@daisuke-yoshimoto Your explanation is good. Although my problem has been solved, I would prefer to know the answer to the question I asked you last time .You are a great software engineer.

zhaogituser on 1 Aug 2018

@zhaogituser

Sorry I made you wait. I have been busy with my full time job for a while.

<dubbo:service interface="org.activiti.engine.RuntimeService" ref="runtimeService" timeout="10000"/>

This mean that Spring framework uses runtimeService as the implementation of the interface org.activiti.engine.RuntimeService.

<bean id="runtimeService" class="org.activiti.engine.impl.RuntimeServiceImpl"/>

And, runtimeService mean new org.activiti.engine.impl.RuntimeServiceImpl();

So, dubbo use new org.activiti.engine.impl.RuntimeServiceImpl() as the implementation of the interface org.activiti.engine.RuntimeService.

daisuke-yoshimoto on 2 Aug 2018

👍1

@zhaogituser
Also, if you want to use activiti-context.xml, you should set so that dubbo-provider.xml refer activiti-context.xml. For example, the following.

<import resource="classpath:activiti-context.xml"/>

daisuke-yoshimoto on 2 Aug 2018

👍1

@daisuke-yoshimoto Sorry,I took up your precious time.I did it before ,but the Spring framewrok didn't get the implemention of the interface org.activiti.engine.RuntimeService. Now ,I do it again.

zhaogituser on 3 Aug 2018

@zhaogituser @daisuke-yoshimoto @balsarori amazing community contributions/interactions. Is this issue solved? did you guys found the cause of the problem? For what I can see in the comments it was more about how the engine was being used in a distributed setup with Spring than a real issue.
Are you ok with closing this issue?

salaboy on 2 Nov 2018

Is the problem finally solved?

gebilaoman on 22 Aug 2019

Activiti: why was "commandExecutor" Properties always threw an exception ("NullpointException") ？

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applicationContext-dubbo-provider.xml

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