topic Unable to attach a file using REST in Alfresco Archive

Unable to attach a file using REST

dan1 — Mon, 18 Feb 2013 11:37:46 GMT

Hi,I have 5.11 installed. I'm only using the activiti-rest application. I'm using curl to deploy processes and start instances. However, I'm unable to attach a file to a user task. Here is the process definition:<?xml version="1.0" encoding="UTF-8"?><definitions xmlns="http://www.omg.org/sp

Re: Unable to attach a file using REST

frederikherema1 — Mon, 18 Feb 2013 12:30:46 GMT

Unfortunately, the original exception is not used as cause, so it's not easy to see what's happening:


} catch(Exception e) {
      if(e instanceof ActivitiException) {
        throw (ActivitiException) e;
      }
      throw new ActivitiException("Unable to add new attachment to task " + taskId);
    }

Are you able to debug the activiti-server in org.activiti.rest.api.task.TaskAttachmentAddResource.addAttachment? This may show you the root cause and take it from there…

Re: Unable to attach a file using REST

dan1 — Mon, 18 Feb 2013 15:42:31 GMT

Thanks for the response. I ran the debugger and the exception came from RestletUpload parseRepresentation. It's expecting multipart/form-data. I modified the curl command and all is well!


> curl -u"admin:admin" –form upload=@/activiti/attachments/junk.txt -X PUT http://localhost/activiti-rest/service/task/809/attachment

{"id":"901","name":"junk.txt","description":"junk.txt","type":"text/plain","url":null}

Thanks,
Dan

Re: Unable to attach a file using REST

jbarrez — Tue, 19 Feb 2013 08:15:49 GMT

Thanks for posting back. Curl is indeed a funny beast sometimes.

Re: Unable to attach a file using REST

chittaranjan168 — Mon, 09 Jun 2014 07:18:49 GMT

Could not able to start process, through RuntimeService instance. Showing

Called Application
Called Method
Before process start
————
java.lang.NullPointerException
at com.test.jp.resource.HelloWorldResource.printHelloWorld(HelloWorldResource.java:58)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

HelloWorldResource.java
________________________

*
*
*
*
System.out.println("Before process start");
            try {

       System.out.println("———— ");
       someBean.doTransactionalStuff(true);

       //runtimeService.startProcessInstanceByKey("helloProcess");
       System.out.println("After process start");
      } catch (RuntimeException re) {
       re.printStackTrace();
      }
******
Some Bean

public class SomeBean {

private RuntimeService runtimeService;

@Transactional
public void doTransactionalStuff(boolean error){
System.out.println("stsrt process>>>>>>>>>!!!!!");

String str=runtimeService.startProcessInstanceByKey("helloProcess").getId();

    if(str!=null){
     System.out.println("Process Instance is null!!!");
      throw new UnsupportedOperationException("Rollback needed!!");
    }
}

public void setRuntimeService(RuntimeService runtimeService) {
this.runtimeService = runtimeService;
}

}

and bpmn20.xml file
<process id="helloProcess" name="Hello Process" isExecutable="true">
    <startEvent id="start" name="Start"></startEvent>
    <sequenceFlow id="flow1" sourceRef="start" targetRef="print"></sequenceFlow>
    <serviceTask id="print" name="Service Task" activiti:expression="#{someOtherBean.doSimpleStuff()}" ></serviceTask>
    <sequenceFlow id="flow2" sourceRef="print" targetRef="end"></sequenceFlow>
    <endEvent id="end" name="End"></endEvent>
</process>

Re: Unable to attach a file using REST

chittaranjan168 — Mon, 09 Jun 2014 07:19:34 GMT

Please help me…..

Re: Unable to attach a file using REST

martin_grofcik — Tue, 10 Jun 2014 06:38:26 GMT

Hi,

what is the issue is someBean null? From where do you obtain someBean?
Could you prepare jUnit test for it?
http://forums.activiti.org/content/sticky-how-write-unit-test

Regards
Martin