Activiti學習四之瞭解Activiti bpmn圖表對應的XML文件

前面我們繪製了的流程圖的本質是一個xml文件，右擊helloWorld.bpmn文件，open with -> XML Editor ；

 

 

XML如下：

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<?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:xsd="http://www.w3.org/2001/XMLSchema"                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/test">   <process id="myFirstProcess" name="My First process" isExecutable="true">     <startEvent id="startevent1" name="Start"></startEvent>     <endEvent id="endevent1" name="End"></endEvent>     <userTask id="usertask1" name="HelloWorld" activiti:assignee="java1234_小鋒"></userTask>     <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>     <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>   </process>   <bpmndi:BPMNDiagram id="BPMNDiagram_myFirstProcess">     <bpmndi:BPMNPlane bpmnElement="myFirstProcess" id="BPMNPlane_myFirstProcess">       <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">         <omgdc:Bounds height="35.0" width="35.0" x="200.0" y="40.0"></omgdc:Bounds>       </bpmndi:BPMNShape>       <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">         <omgdc:Bounds height="35.0" width="35.0" x="200.0" y="200.0"></omgdc:Bounds>       </bpmndi:BPMNShape>       <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">         <omgdc:Bounds height="55.0" width="105.0" x="165.0" y="110.0"></omgdc:Bounds>       </bpmndi:BPMNShape>       <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">         <omgdi:waypoint x="217.0" y="75.0"></omgdi:waypoint>         <omgdi:waypoint x="217.0" y="110.0"></omgdi:waypoint>       </bpmndi:BPMNEdge>       <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">         <omgdi:waypoint x="217.0" y="165.0"></omgdi:waypoint>         <omgdi:waypoint x="217.0" y="200.0"></omgdi:waypoint>       </bpmndi:BPMNEdge>     </bpmndi:BPMNPlane>   </bpmndi:BPMNDiagram> </definitions>

 

這裏definitions是一個總的節點；下面process是流程節點，bpmndi:BPMNDiagram是流程圖表定義節點；

bpmndi:BPMNDiagram這個節點裏面就不用看了。是定義圖標的位置，結構的。

我們重點看下process節點：

 

這裏我們看到的有三個節點，開始節點，結束節點，用戶任務節點。這裏還有兩根連線，開始節點- > 用戶任務節點 連線；

用戶任務節點 -> 結束節點 連線；

 

對應到xml 是5個dom節點；

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<startEvent id="startevent1" name="Start"></startEvent> <endEvent id="endevent1" name="End"></endEvent> <userTask id="usertask1" name="HelloWorld" activiti:assignee="java1234_小鋒"></userTask> <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow> <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>

這裏startEvent對應開始節點； endEvent對應結束節點； 

userTask對應用戶任務節點； sequenceFlow對應用戶任務節點，sourceRef targetRef 屬性對應從哪裏連接到哪裏去。

流程越複雜，生成的對應XML文件也越複雜，節點多，屬性也多。