Activiti 分配任务责任人

Activiti 分配任务责任人

固定分配

在进行业务流程建模时指定固定的任务负责人 Assignee

表达式分配

由于固定分配方式任务只管一步一步执行任务，执行到每一个任务将按照 bpmn 的配置去分配任务负责人，不够灵活，基本不使用

UEL 表达式

Activiti 使用 UEL 表达式， UEL 是 java EE6 规范的一部分， UEL（Unified Expression Language）即 统一表达式语言， activiti 支持两个 UEL 表达式： UEL-value 和 UEL-method

UEL-value 定义

指定任务负责人 Assignee 为 ${变量}

UEL-method 方式

指定任务负责人 Assignee 为 ${对象.get方法}

UEL-method 与 UEL-value 结合

指定任务负责人 Assignee 为 ${对象.get方法(参数)}

案例

流程定义文件如下

<?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/processdef">
  <process id="evection-uel" name="evection-uel" isExecutable="true">
    <startEvent id="sid-d387c3a7-23c6-4771-9405-644746c6c799" name="出差申请流程开始"/>
    <!--设置申请出差任务负责人为变量assignee0,依次类推-->
    <userTask id="sid-18d3fd04-3ca3-444b-a23f-93b9f5bac6a9" name="申请出差" activiti:assignee="${assignee0}"/>
    <userTask id="sid-d822e097-2cad-4e53-866a-79f2c31c28b4" name="经理审批" activiti:assignee="${assignee1}"/>
    <userTask id="sid-df38a84b-6018-40da-bf2a-511484fcdf60" name="财务审批" activiti:assignee="${assignee3}"/>
    <userTask id="sid-edb1fa75-c042-46a7-b5e9-dae94d027163" name="总经理审批" activiti:assignee="${assignee2}"/>
    <sequenceFlow id="sid-ba4b8230-cc49-4e94-8066-a5c39e239879" sourceRef="sid-d387c3a7-23c6-4771-9405-644746c6c799" targetRef="sid-18d3fd04-3ca3-444b-a23f-93b9f5bac6a9"/>
    <sequenceFlow id="sid-d8046b6c-d629-418e-a33d-61c4d667bce7" sourceRef="sid-18d3fd04-3ca3-444b-a23f-93b9f5bac6a9" targetRef="sid-d822e097-2cad-4e53-866a-79f2c31c28b4"/>
    <sequenceFlow id="sid-4f21d03e-6123-457b-b70e-f568faa3be48" sourceRef="sid-d822e097-2cad-4e53-866a-79f2c31c28b4" targetRef="sid-edb1fa75-c042-46a7-b5e9-dae94d027163"/>
    <sequenceFlow id="sid-bd4106d3-d02a-413a-87f3-faca04a69255" sourceRef="sid-edb1fa75-c042-46a7-b5e9-dae94d027163" targetRef="sid-df38a84b-6018-40da-bf2a-511484fcdf60"/>
    <endEvent id="sid-2fb54bb2-3794-48dc-8ef0-16d827a14d71" name="出差申请流程结束"/>
    <sequenceFlow id="sid-6fbe134e-73d7-437f-87cc-45fff8a1c53b" sourceRef="sid-df38a84b-6018-40da-bf2a-511484fcdf60" targetRef="sid-2fb54bb2-3794-48dc-8ef0-16d827a14d71"/>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_evection-uel">
    <bpmndi:BPMNPlane bpmnElement="evection-uel" id="BPMNPlane_evection-uel">
      <bpmndi:BPMNShape id="shape-6d957468-1a2b-4fb2-a3bb-fe2be24ea0a4" bpmnElement="sid-d387c3a7-23c6-4771-9405-644746c6c799">
        <omgdc:Bounds x="-570.0" y="-280.0" width="30.0" height="30.0"/>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="shape-713a0420-df03-4077-bd2d-0578f684e57e" bpmnElement="sid-18d3fd04-3ca3-444b-a23f-93b9f5bac6a9">
        <omgdc:Bounds x="-470.0" y="-300.0" width="100.0" height="80.0"/>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="shape-87052603-fd47-43fe-95f3-2dd12c2668f7" bpmnElement="sid-d822e097-2cad-4e53-866a-79f2c31c28b4">
        <omgdc:Bounds x="-270.0" y="-295.0" width="100.0" height="80.0"/>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="shape-4e38b71b-168c-4c4d-bff2-f39a5e703845" bpmnElement="sid-df38a84b-6018-40da-bf2a-511484fcdf60">
        <omgdc:Bounds x="-260.0" y="40.0" width="100.0" height="80.0"/>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="shape-90ee8e50-f089-450a-bbc3-c4b0cfcad964" bpmnElement="sid-edb1fa75-c042-46a7-b5e9-dae94d027163">
        <omgdc:Bounds x="-270.0" y="-130.0" width="100.0" height="80.0"/>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge id="edge-12545edb-6305-4e77-8ffa-c6d771c422f4" bpmnElement="sid-ba4b8230-cc49-4e94-8066-a5c39e239879">
        <omgdi:waypoint x="-540.0" y="-257.5"/>
        <omgdi:waypoint x="-470.0" y="-260.0"/>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="edge-ab7d2c75-dcae-4f70-8cbd-69e3eb642de3" bpmnElement="sid-d8046b6c-d629-418e-a33d-61c4d667bce7">
        <omgdi:waypoint x="-370.0" y="-260.0"/>
        <omgdi:waypoint x="-270.0" y="-255.0"/>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="edge-7d438b6b-a94c-468e-925f-cc64798a15bd" bpmnElement="sid-4f21d03e-6123-457b-b70e-f568faa3be48">
        <omgdi:waypoint x="-220.0" y="-215.0"/>
        <omgdi:waypoint x="-220.0" y="-130.0"/>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge id="edge-72cc114c-3ae6-4ded-a1da-fc6756da8b27" bpmnElement="sid-bd4106d3-d02a-413a-87f3-faca04a69255">
        <omgdi:waypoint x="-220.0" y="-50.0"/>
        <omgdi:waypoint x="-210.0" y="40.0"/>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNShape id="shape-405075bf-9833-43f3-8bb5-fa348549638f" bpmnElement="sid-2fb54bb2-3794-48dc-8ef0-16d827a14d71">
        <omgdc:Bounds x="-70.0" y="70.0" width="30.0" height="30.0"/>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge id="edge-f1076d45-45fd-4374-88fc-d2d08d0b39cd" bpmnElement="sid-6fbe134e-73d7-437f-87cc-45fff8a1c53b">
        <omgdi:waypoint x="-160.0" y="80.0"/>
        <omgdi:waypoint x="-70.0" y="77.5"/>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

部署流程后，启动流程并设置用户任务负责人

/**
  * 启动流程并设置任务负责人
  */
@Test
public void assigneeUEL(){
    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
    RuntimeService runtimeService = processEngine.getRuntimeService();
    // 存储Assignee变量值
    Map<String,Object> assigneeMap = new HashMap<>();
    assigneeMap.put("assignee0","张三");
    assigneeMap.put("assignee1","李经理");
    assigneeMap.put("assignee2","王总经理");
    assigneeMap.put("assignee3","赵财务");
    // 启动流程实例并设置用户任务的负责人
    runtimeService.startProcessInstanceByKey("evection-uel",assigneeMap);

    System.out.println(processEngine.getName());
}

流程启动成功后，可以在 act_ru_variable 表看到设置的用户任务负责人变量及变量值相关数据