1. 可视化编辑器编辑

在这里插入图片描述

2. XML文件

<?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:flowable="http://flowable.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://flowable.org/test">
  <process id="Multiple" name="ygw-多实例测试Demo" isExecutable="true">
    <startEvent id="start" name="开始" flowable:initiator="startUser"></startEvent>
    <userTask id="parallelTask" name="并行多实例" flowable:assignee="${parallel}">
      <documentation>并行多实例测试 指分配给多个用户之后，只要其中一个用户完成即可下一步</documentation>
      <multiInstanceLoopCharacteristics isSequential="false" flowable:collection="parallelList" flowable:elementVariable="parallel">
        <completionCondition>${nrOfCompletedInstances == 1}</completionCondition>
      </multiInstanceLoopCharacteristics>
    </userTask>
    <sequenceFlow id="sid-FE8385CC-9AC8-49BA-86FC-5D6D1F98528B" sourceRef="start" targetRef="parallelTask"></sequenceFlow>
    <userTask id="sequentialTask" name="串行多实例" flowable:assignee="${sequential}">
      <documentation>串行多实例，值分配给多个用户之后，必须一个一个去完成才能进入下一步节点</documentation>
      <multiInstanceLoopCharacteristics isSequential="true" flowable:collection="sequentialList"  flowable:elementVariable="sequential">

      </multiInstanceLoopCharacteristics>
    </userTask>
    <sequenceFlow id="sid-2DA034C8-47A5-4A7A-8641-3BD09E16BCE3" sourceRef="parallelTask" targetRef="sequentialTask"></sequenceFlow>
    <endEvent id="end" name="结束"></endEvent>
    <sequenceFlow id="sid-3AC0C29B-B286-4780-87A9-0A816C8F9A13" sourceRef="sequentialTask" targetRef="end"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_Multiple">
    <bpmndi:BPMNPlane bpmnElement="Multiple" id="BPMNPlane_Multiple">
      <bpmndi:BPMNShape bpmnElement="start" id="BPMNShape_start">
        <omgdc:Bounds height="30.0" width="30.0" x="100.0" y="163.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="parallelTask" id="BPMNShape_parallelTask">
        <omgdc:Bounds height="80.0" width="100.0" x="240.0" y="138.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sequentialTask" id="BPMNShape_sequentialTask">
        <omgdc:Bounds height="80.0" width="100.0" x="450.0" y="138.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="end" id="BPMNShape_end">
        <omgdc:Bounds height="28.0" width="28.0" x="675.0" y="164.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="sid-2DA034C8-47A5-4A7A-8641-3BD09E16BCE3" id="BPMNEdge_sid-2DA034C8-47A5-4A7A-8641-3BD09E16BCE3">
        <omgdi:waypoint x="339.94999999995036" y="178.0"></omgdi:waypoint>
        <omgdi:waypoint x="449.99999999999704" y="178.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-3AC0C29B-B286-4780-87A9-0A816C8F9A13" id="BPMNEdge_sid-3AC0C29B-B286-4780-87A9-0A816C8F9A13">
        <omgdi:waypoint x="549.9499999999675" y="178.0"></omgdi:waypoint>
        <omgdi:waypoint x="675.0" y="178.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-FE8385CC-9AC8-49BA-86FC-5D6D1F98528B" id="BPMNEdge_sid-FE8385CC-9AC8-49BA-86FC-5D6D1F98528B">
        <omgdi:waypoint x="129.94999940317362" y="178.0"></omgdi:waypoint>
        <omgdi:waypoint x="239.99999999993753" y="178.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

3. 并行主要内容

<userTask id="parallelTask" name="并行多实例" flowable:assignee="${parallel}">
      <documentation>并行多实例测试 指分配给多个用户之后，只要其中一个用户完成即可下一步</documentation>
      <multiInstanceLoopCharacteristics isSequential="false" flowable:collection="parallelList" flowable:elementVariable="parallel">
        <completionCondition>${nrOfCompletedInstances == 1}</completionCondition>
      </multiInstanceLoopCharacteristics>
</userTask>

4. 串行主要内容

<userTask id="sequentialTask" name="串行多实例" flowable:assignee="${sequential}">
      <documentation>串行多实例，值分配给多个用户之后，必须一个一个去完成才能进入下一步节点</documentation>
      <multiInstanceLoopCharacteristics isSequential="true" flowable:collection="sequentialList"  flowable:elementVariable="sequential">

      </multiInstanceLoopCharacteristics>
</userTask>

5. 参数讲解

flowable:collection=“parallelList” 传入List参数,一般为用户ID集合
flowable:elementVariable=“parallel” List中单个参数的名称
flowable:assignee="${parallel}" 当前任务的用户参数

6 并行参数讲解

1.nrOfInstances 实例总数。

2.nrOfCompletedInstances 当前还没有完成的实例 nr是number单词缩写。

3.loopCounter 已经循环的次数。

4.nrOfActiveInstances 已经完成的实例个数。
下图代码为并行通过条件,我这边是值只要一人通过，该节点就通过

<completionCondition>${nrOfCompletedInstances == 1}</completionCondition>

还有按照百分比来的

<completionCondition>${nrOfCompletedInstances/nrOfInstances &gt;= 0.25}</completionCondition>

7.如何填入参数

    public static final List<String> USER_ID_LIST = new ArrayList<String>() {{
        add("10086");
        add("10010");
        add("10000");
    }};

    public void start() {
        // 启动流程
        Map<String, Object> variables = new HashMap<>();
        // 创建用户
        variables.put("parallelList", USER_ID_LIST);
        variables.put("sequentialList", USER_ID_LIST);

        Flow flow = flowService.startProcessInstanceById("流程ID", "流程标识Key", variables);
        if (flow != null) {
            System.out.println("流程已启动,流程ID:" + flow.getProcessInstanceId());
        } else {
           System.out.println("开启流程失败");
        }
    }

8 flowService中的内容

public Flow startProcessInstanceById(String processDefinitionId, String businessKey, Map<String, Object> variables) {
    // 设置流程启动用户
    identityService.setAuthenticatedUserId("当前登录用户ID");

    // 开启流程
    ProcessInstance processInstance = runtimeService.startProcessInstanceById(processDefinitionId, businessKey, variables);
    // 组装流程通用类
    Flow flow = new Flow();
    flow.setProcessInstanceId(processInstance.getId());
    return flow;
}

原文链接：https://blog.csdn.net/qq_35401216/article/details/108461797