8:29 p.m.
TC ONG [https://community.jboss.org/people/devilkazuya99] created the discussion
"java.io.OptionalDataException when do ObjectInputStream.readObject()"
To view the discussion, visit: https://community.jboss.org/message/807101#807101
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I am using jBPM 5.4.0 final here.
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In me bpmn file I have a String variable in my process. I set it in "onEntry"
scritp of my Human Task. Then map it to "Content" in data input association.
<userTask id="_5" name="User Task" >
<extensionElements>
<tns:onEntry-script scriptFormat="http://www.java.com/java">
<script>
* String s = "How do you do?";*
* kcontext.setVariable("content", s);*
</script>
</tns:onEntry-script>
</extensionElements>
<ioSpecification>
* <dataInput id="_5_ContentInput" name="Content" />*
* <dataOutput id="_5_answerOutput" name="answer" />*
<inputSet>
<dataInputRefs>_5_ContentInput</dataInputRefs>
</inputSet>
<outputSet>
<dataOutputRefs>_5_answerOutput</dataOutputRefs>
</outputSet>
</ioSpecification>
* <dataInputAssociation>*
* <sourceRef>content</sourceRef>*
* <targetRef>_5_ContentInput</targetRef>*
* </dataInputAssociation>*
<dataInputAssociation>
<targetRef>_5_ContentInput</targetRef>
<assignment>
<from xsi:type="tFormalExpression"></from>
<to xsi:type="tFormalExpression">_5_ContentInput</to>
</assignment>
</dataInputAssociation>
<dataOutputAssociation>
<sourceRef>_5_answerOutput</sourceRef>
<targetRef>answer</targetRef>
</dataOutputAssociation>
<potentialOwner>
<resourceAssignmentExpression>
<formalExpression>nemo</formalExpression>
</resourceAssignmentExpression>
</potentialOwner>
</userTask>
I hope to get the "Content" at the programming side.
List<TaskSummary> taskSummaryList =
localTaskService.getTasksAssignedAsPotentialOwner("nemo", "en-UK");
for (TaskSummary taskSummary : taskSummaryList) {
System.out.println(taskSummary.getId() +
"\t" + taskSummary.getName() + "\t" + taskSummary.getStatus());
Task task =
localTaskService.getTask(taskSummary.getId());
long documentContentId =
task.getTaskData().getDocumentContentId();
* Content content =
localTaskService.getContent(documentContentId);*
System.out.println(content.getId() + " =>
" + content.toString());
if (content != null){
ByteArrayInputStream bais = new
ByteArrayInputStream(content.getContent());
ObjectInputStream ois;
try {
ois = new ObjectInputStream(bais);
*Object obj = ois.readObject();*
logger.debug("Object = " + obj.getClass());
} catch (IOException e) {
*e.printStackTrace();*
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
localTaskService.start(taskSummary.getId(),
"nemo");
Map<String, Object> results = new
HashMap<String, Object>();
results.put("answer",
"GOOD");
localTaskService.completeWithResults(taskSummary.getId(), "nemo", results);
}
The result on the console is:
1 => org.jbpm.task.Content@74baaca4
java.io.OptionalDataException
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1358)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
at HelloJBPM5.main(HelloJBPM5.java:73)
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