如何在activiti中發送消息

我想在activiti中拋出並捕獲中間消息catch事件。但我不知道如何實施它。以下是我的bpmn，我通過中間消息事件將Web服務與其他人類談話鏈接起來。如何在activiti中發送消息

<?xml version="1.0" encoding="UTF-8"?> 
    <definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/processdef"> 
     <message id="msg" name="msg"></message> 
     <process id="process" isExecutable="true"> 
     <startEvent id="start" name="start" activiti:initiator="initiator"></startEvent> 
     <serviceTask id="upload" name="upload project" activiti:exclusive="false" activiti:class="fitman.services.MyAuthUser_WS"></serviceTask> 
     <userTask id="provide" name="provide project details" activiti:assignee="${initiator}"> 
      <extensionElements> 
      <activiti:formProperty id="user" name="user" type="user" required="true"></activiti:formProperty> 
      <activiti:formProperty id="name" name="name" type="string"></activiti:formProperty> 
      <activiti:formProperty id="toAddress" name="toAddress" type="string"></activiti:formProperty> 
      <activiti:formProperty id="subject" name="subject" type="string"></activiti:formProperty> 
      <activiti:formProperty id="textBody" name="textBody" type="string"></activiti:formProperty> 
      </extensionElements> 
     </userTask> 
     <sequenceFlow id="sid-8D423749-D7C6-4617-843B-FC4B62CC2E0A" sourceRef="start" targetRef="provide"></sequenceFlow> 
     <sequenceFlow id="sid-50642463-711F-4AD0-ABFC-F1A383392D4D" sourceRef="provide" targetRef="upload"></sequenceFlow> 
     <sequenceFlow id="sid-9611F0F0-6CC0-4F56-8A7B-35624A0BB2D2" sourceRef="upload" targetRef="msg1"></sequenceFlow> 
     <userTask id="validate" name="validate" activiti:assignee="msg1"></userTask> 
     <sequenceFlow id="sid-B4044992-C9F3-47C8-A206-99CABAC46B6D" sourceRef="msg1" targetRef="validate"></sequenceFlow> 
     <endEvent id="end"></endEvent> 
     <sequenceFlow id="sid-163DD9FE-3708-4A6B-85FC-EB1E2354182B" sourceRef="validate" targetRef="end"></sequenceFlow> 
     <intermediateCatchEvent id="msg1" name="msg1"> 
      <messageEventDefinition messageRef="msg"></messageEventDefinition> 
     </intermediateCatchEvent> 
     </process> 

    </definitions>

我在做什麼錯誤或任何想法如何實現它。

現在我正在使用信號，但在捕捉它後仍然無法啓動其他用戶任務;我做錯了什麼？

<?xml version="1.0" encoding="UTF-8"?> 
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/processdef"> 
    <signal id="newMsg" name="newMsg"></signal> 
    <process id="model1" isExecutable="true"> 
    <startEvent id="start" activiti:initiator="initiator"></startEvent> 
    <userTask id="task1" name="task1" activiti:assignee="${initiator}"> 
     <extensionElements> 
     <activiti:formProperty id="a" name="a" type="string"></activiti:formProperty> 
     </extensionElements> 
    </userTask> 
    <sequenceFlow id="sid-16842953-EA94-42A2-B116-C68A98C85090" sourceRef="start" targetRef="task1"></sequenceFlow> 
    <sequenceFlow id="sid-E2E35140-E272-4D5C-88A1-CD1039E6672B" sourceRef="task1" targetRef="serv1"></sequenceFlow> 
    <sequenceFlow id="sid-9E02B791-B3C0-4B62-81BB-DA10424469DF" sourceRef="serv1" targetRef="s1"></sequenceFlow> 
    <intermediateCatchEvent id="s1" name="s1"> 
     <signalEventDefinition signalRef="newMsg"></signalEventDefinition> 
    </intermediateCatchEvent> 
    <userTask id="task2" name="task2" activiti:assignee="s1"> 
     <extensionElements> 
     <activiti:formProperty id="prenom" name="prenom" type="string"></activiti:formProperty> 
     <activiti:taskListener event="create" class="fitman.services.MyTaskListener"></activiti:taskListener> 
     </extensionElements> 
    </userTask> 
    <sequenceFlow id="sid-BC7E1EC1-6839-4440-A123-4127C00FAAA3" sourceRef="s1" targetRef="task2"></sequenceFlow> 
    <sequenceFlow id="sid-5A09EDC9-7B1F-4BAD-8D3B-DEB53A01768A" sourceRef="task2" targetRef="serv2"></sequenceFlow> 
    <sequenceFlow id="sid-1DCF980A-AB99-4839-A5BA-8900A1AA0D51" sourceRef="serv2" targetRef="end"></sequenceFlow> 
    <serviceTask id="serv1" name="serv1" activiti:class="fitman.services.MyAuthUser_WS"></serviceTask> 
    <serviceTask id="serv2" name="serv2" activiti:class="fitman.services.MyAuthUser_WS"></serviceTask> 
    <endEvent id="end" name="end"></endEvent> 
    </process> 

</definitions>

來源

2014-02-16 user2746713