122 lines
3.6 KiB
Markdown
122 lines
3.6 KiB
Markdown
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# BPMN XML 骨架与基本节点模板
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## 1. XML 骨架模板
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所有生成的 BPMN XML 必须使用以下骨架：
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```xml
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<?xml version="1.0" encoding="UTF-8"?>
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<bpmn2:definitions
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xmlns:bpmn2="http://www.omg.org/spec/BPMN/20100524/MODEL"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
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xmlns:dc="http://www.omg.org/spec/DD/20100524/DC"
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xmlns:di="http://www.omg.org/spec/DD/20100524/DI"
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xmlns:flowable="http://flowable.org/bpmn"
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id="sample-diagram"
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targetNamespace="http://bpmn.io/schema/bpmn"
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xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL BPMN20.xsd">
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<bpmn2:process id="${PROCESS_KEY}" name="${PROCESS_NAME}">
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<!-- 必需的监听器 -->
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<bpmn2:extensionElements>
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<flowable:executionListener class="org.jeecg.modules.extbpm.listener.execution.ProcessEndListener" event="end" />
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<flowable:eventListener class="org.jeecg.modules.listener.tasktip.TaskCreateGlobalListener" />
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</bpmn2:extensionElements>
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<!-- 节点定义区 -->
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${NODES}
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<!-- 连线定义区 -->
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${SEQUENCE_FLOWS}
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</bpmn2:process>
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<!-- 图形布局区 -->
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<bpmndi:BPMNDiagram id="BPMNDiagram_1">
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<bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="${PROCESS_KEY}">
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${SHAPES_AND_EDGES}
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</bpmndi:BPMNPlane>
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</bpmndi:BPMNDiagram>
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</bpmn2:definitions>
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```
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## 2. 节点 XML 模板
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### 2.1 开始节点（必需）
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```xml
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<bpmn2:startEvent id="start" name="开始" flowable:initiator="applyUserId" />
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```
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### 2.2 结束节点（必需）
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**普通结束节点：**
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```xml
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<bpmn2:endEvent id="end" name="结束" />
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```
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**带监听器的结束节点（如需在结束时触发业务逻辑）：**
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```xml
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<bpmn2:endEvent id="End_reject">
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<bpmn2:extensionElements>
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<flowable:executionListener expression="${myListener.onReject(execution)}" event="start" />
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</bpmn2:extensionElements>
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</bpmn2:endEvent>
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```
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> 一个流程可以有多个结束节点（如"同意结束"和"拒绝结束"各一个），每个可挂不同监听器。
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### 2.3 用户任务（userTask）
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```xml
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<!-- 指定人 -->
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<bpmn2:userTask id="task_xxx" name="节点名称" flowable:assignee="username" />
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<!-- 候选人（多人） -->
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<bpmn2:userTask id="task_xxx" name="节点名称" flowable:candidateUsers="user1,user2" />
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<!-- 候选角色组 -->
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<bpmn2:userTask id="task_xxx" name="节点名称" flowable:candidateGroups="roleCode" />
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<!-- 表达式（动态） -->
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<bpmn2:userTask id="task_xxx" name="节点名称" flowable:assignee="${variableName}" />
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<!-- 发起人 -->
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<bpmn2:userTask id="task_xxx" name="节点名称" flowable:assignee="${applyUserId}" />
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```
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### 2.4 排他网关（exclusiveGateway）
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```xml
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<bpmn2:exclusiveGateway id="gateway_xxx" name="网关名称" />
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```
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带条件的连线：
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```xml
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<bpmn2:sequenceFlow id="flow_xxx" name="通过" sourceRef="gateway_xxx" targetRef="task_yyy">
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<bpmn2:conditionExpression xsi:type="tFormalExpression"><![CDATA[${result == 1}]]></bpmn2:conditionExpression>
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</bpmn2:sequenceFlow>
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<bpmn2:sequenceFlow id="flow_xxx" name="拒绝" sourceRef="gateway_xxx" targetRef="end">
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<bpmn2:conditionExpression xsi:type="tFormalExpression"><![CDATA[${result == 0}]]></bpmn2:conditionExpression>
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</bpmn2:sequenceFlow>
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```
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### 2.5 并行网关（parallelGateway）
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并行网关需要成对使用（分支 + 汇聚）：
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```xml
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<!-- 并行分支 -->
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<bpmn2:parallelGateway id="gateway_fork" name="并行开始" />
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<!-- 并行汇聚 -->
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<bpmn2:parallelGateway id="gateway_join" name="并行汇聚" />
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```
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### 2.6 普通连线（sequenceFlow）
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```xml
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<bpmn2:sequenceFlow id="flow_xxx" name="" sourceRef="nodeA" targetRef="nodeB" />
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```
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