将数据从bpmn发送到java类

Question

我想从java类中的bpmn获取数据。我的代码是：

Map<String, Object> params = new HashMap<String, Object>();
    params.put("s", s);     
    params.put("p", s);
    params.put("result", result);
    ProcessInstance processInstance = ksession.startProcess("com.sample.bpmn");
    // check whether the process instance has completed successfully
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    assertNodeTriggered(processInstance.getId(), "Script Task 1");

我将变量“结果”发送到bpmn并在bpmn中更改“结果”。现在我想得到值在java类中修改“结果”

Answer 1

有一个很好的例子，如何在jBPM documentation中执行此操作。您只需要将processInstance变量强制转换为WorkflowProcessInstance：

result = ((WorkflowProcessInstance) processInstance).getVariable("result");