Activiti学习四之了解Activiti bpmn图表对应的XML文件

前面我们绘制了的流程图的本质是一个xml文件，右击helloWorld.bpmn文件，open with -> XML Editor ；

 

 

XML如下：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

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_小锋">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>

 

这里definitions是一个总的节点；下面process是流程节点，bpmndi:BPMNDiagram是流程图表定义节点；

bpmndi:BPMNDiagram这个节点里面就不用看了。是定义图标的位置，结构的。

我们重点看下process节点：

 

这里我们看到的有三个节点，开始节点，结束节点，用户任务节点。这里还有两根连线，开始节点- > 用户任务节点 连线；

用户任务节点 -> 结束节点 连线；

 

对应到xml 是5个dom节点；

1 2 3 4 5

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

这里startEvent对应开始节点； endEvent对应结束节点； 

userTask对应用户任务节点； sequenceFlow对应用户任务节点，sourceRef targetRef 属性对应从哪里连接到哪里去。

流程越复杂，生成的对应XML文件也越复杂，节点多，属性也多。