引言

书接上回，继续三国流程系列教程。 本文主要讲解并行网关。

并行网关允许流程中的多个任务同时执行，从而提高流程的执行效率。

并行网关会忽视序列流上的条件设置。

并行网关分为两部分。

Fork: 用于任务开始

Join:用于任务结束

体验文章demo演示站点: JeecgFlow

需求

假设作为将军的张飞要发动一个出征,填写出兵人数和攻占城市

先左右军师并行审核

再由主公进行最后决断。

BPMN建模

<?xml version="1.0" encoding="UTF-8"?>
<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:camunda="http://camunda.org/schema/1.0/bpmn" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" xmlns:modeler="http://camunda.org/schema/modeler/1.0" id="Definitions_0h8qtyr" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="5.10.0" modeler:executionPlatform="Camunda Platform" modeler:executionPlatformVersion="7.19.0">
  <bpmn:process id="Process_1f40ryt" name="出征并行流程" isExecutable="true">
    <bpmn:startEvent id="StartEvent_1" camunda:initiator="start">
      <bpmn:outgoing>Flow_18wovhb</bpmn:outgoing>
    </bpmn:startEvent>
    <bpmn:sequenceFlow id="Flow_18wovhb" sourceRef="StartEvent_1" targetRef="Activity_0ytoxfo" />
    <bpmn:userTask id="Activity_0ytoxfo" name="出征申请" camunda:assignee="${general}">
      <bpmn:extensionElements>
        <camunda:formData>
          <camunda:formField id="number" label="出兵人数" type="long" />
          <camunda:formField id="city" label="城市" type="string" />
        </camunda:formData>
      </bpmn:extensionElements>
      <bpmn:incoming>Flow_18wovhb</bpmn:incoming>
      <bpmn:outgoing>Flow_04b290y</bpmn:outgoing>
    </bpmn:userTask>
    <bpmn:sequenceFlow id="Flow_04b290y" sourceRef="Activity_0ytoxfo" targetRef="Gateway_0hlq55i" />
    <bpmn:parallelGateway id="Gateway_0hlq55i">
      <bpmn:incoming>Flow_04b290y</bpmn:incoming>
      <bpmn:outgoing>Flow_0iqw5r6</bpmn:outgoing>
      <bpmn:outgoing>Flow_18hrbjg</bpmn:outgoing>
    </bpmn:parallelGateway>
    <bpmn:sequenceFlow id="Flow_0iqw5r6" sourceRef="Gateway_0hlq55i" targetRef="Activity_0y1hr3s" />
    <bpmn:userTask id="Activity_0y1hr3s" name="左军师" camunda:assignee="${leftGuide}">
      <bpmn:extensionElements>
        <camunda:formData>
          <camunda:formField id="comment" label="评论" type="string" />
          <camunda:formField id="imageUrl" label="图片" type="string" />
        </camunda:formData>
      </bpmn:extensionElements>
      <bpmn:incoming>Flow_0iqw5r6</bpmn:incoming>
      <bpmn:outgoing>Flow_0hiapj2</bpmn:outgoing>
    </bpmn:userTask>
    <bpmn:sequenceFlow id="Flow_18hrbjg" sourceRef="Gateway_0hlq55i" targetRef="Activity_17fwc6q" />
    <bpmn:userTask id="Activity_17fwc6q" name="右军师" camunda:assignee="${rightGuide}">
      <bpmn:extensionElements>
        <camunda:formData>
          <camunda:formField id="comment" label="评论" type="string" />
          <camunda:formField id="imageUrl" label="图片" type="string" />
        </camunda:formData>
      </bpmn:extensionElements>
      <bpmn:incoming>Flow_18hrbjg</bpmn:incoming>
      <bpmn:outgoing>Flow_1ozncyr</bpmn:outgoing>
    </bpmn:userTask>
    <bpmn:sequenceFlow id="Flow_0hiapj2" sourceRef="Activity_0y1hr3s" targetRef="Gateway_0oz16w0" />
    <bpmn:parallelGateway id="Gateway_0oz16w0">
      <bpmn:incoming>Flow_0hiapj2</bpmn:incoming>
      <bpmn:incoming>Flow_1ozncyr</bpmn:incoming>
      <bpmn:outgoing>Flow_0t30p7o</bpmn:outgoing>
    </bpmn:parallelGateway>
    <bpmn:sequenceFlow id="Flow_1ozncyr" sourceRef="Activity_17fwc6q" targetRef="Gateway_0oz16w0" />
    <bpmn:sequenceFlow id="Flow_0t30p7o" sourceRef="Gateway_0oz16w0" targetRef="Activity_0s9d8t2" />
    <bpmn:userTask id="Activity_0s9d8t2" name="主公" camunda:assignee="${leader}">
      <bpmn:extensionElements>
        <camunda:formData>
          <camunda:formField id="comment" label="评论" type="string" />
          <camunda:formField id="imageUrl" label="图片" type="string" />
        </camunda:formData>
      </bpmn:extensionElements>
      <bpmn:incoming>Flow_0t30p7o</bpmn:incoming>
      <bpmn:outgoing>Flow_0nkb62t</bpmn:outgoing>
    </bpmn:userTask>
    <bpmn:endEvent id="Event_0ik6407">
      <bpmn:incoming>Flow_0nkb62t</bpmn:incoming>
    </bpmn:endEvent>
    <bpmn:sequenceFlow id="Flow_0nkb62t" sourceRef="Activity_0s9d8t2" targetRef="Event_0ik6407" />
  </bpmn:process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_1">
    <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1f40ryt">
      <bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">
        <dc:Bounds x="179" y="219" width="36" height="36" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Activity_1sh9j2d_di" bpmnElement="Activity_0ytoxfo">
        <dc:Bounds x="270" y="197" width="100" height="80" />
        <bpmndi:BPMNLabel />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Gateway_04uj71o_di" bpmnElement="Gateway_0hlq55i">
        <dc:Bounds x="425" y="212" width="50" height="50" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Activity_199rpkp_di" bpmnElement="Activity_17fwc6q">
        <dc:Bounds x="550" y="300" width="100" height="80" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Activity_0xwo1vg_di" bpmnElement="Activity_0y1hr3s">
        <dc:Bounds x="550" y="80" width="100" height="80" />
        <bpmndi:BPMNLabel />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Gateway_188eea0_di" bpmnElement="Gateway_0oz16w0">
        <dc:Bounds x="735" y="212" width="50" height="50" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Activity_1sdf99a_di" bpmnElement="Activity_0s9d8t2">
        <dc:Bounds x="870" y="197" width="100" height="80" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Event_0ik6407_di" bpmnElement="Event_0ik6407">
        <dc:Bounds x="1062" y="219" width="36" height="36" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge id="Flow_18wovhb_di" bpmnElement="Flow_18wovhb">
        <di:waypoint x="215" y="237" />
        <di:waypoint x="270" y="237" />
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="Flow_04b290y_di" bpmnElement="Flow_04b290y">
        <di:waypoint x="370" y="237" />
        <di:waypoint x="425" y="237" />
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="Flow_0iqw5r6_di" bpmnElement="Flow_0iqw5r6">
        <di:waypoint x="450" y="212" />
        <di:waypoint x="450" y="120" />
        <di:waypoint x="550" y="120" />
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="Flow_18hrbjg_di" bpmnElement="Flow_18hrbjg">
        <di:waypoint x="450" y="262" />
        <di:waypoint x="450" y="340" />
        <di:waypoint x="550" y="340" />
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="Flow_1ozncyr_di" bpmnElement="Flow_1ozncyr">
        <di:waypoint x="650" y="340" />
        <di:waypoint x="760" y="340" />
        <di:waypoint x="760" y="262" />
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="Flow_0hiapj2_di" bpmnElement="Flow_0hiapj2">
        <di:waypoint x="650" y="120" />
        <di:waypoint x="760" y="120" />
        <di:waypoint x="760" y="212" />
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="Flow_0t30p7o_di" bpmnElement="Flow_0t30p7o">
        <di:waypoint x="785" y="237" />
        <di:waypoint x="870" y="237" />
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="Flow_0nkb62t_di" bpmnElement="Flow_0nkb62t">
        <di:waypoint x="970" y="237" />
        <di:waypoint x="1062" y="237" />
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</bpmn:definitions>

角色扮演

将军

张飞发动一个并行网关流程。如图

填写表单信息，用于启动流程。

在我发起的菜单中可以看到刚刚发起的流程。

在预览页面可以看到流程当前的运行情况。

军师

左军师诸葛亮，右军师庞统。都需要对这个流程进行审批。 此处只说明诸葛的操作。

在待办任务中可以看到详情可以看到审批详情。进行同意操作。

在已办流程可以自己的审批信息。

庞统操作一样。

主公

刘备登录系统， 同样面对待办任务。

与上图军师操作一样

扩展

JeecgBoot集成camuda工作流引擎-并行网关-视频教程