activiti流程变量操作api

企业开发 2023-12-17 07:14:19 阅读次数: 0

文章目录

runtimeService

// ## runtimeService操作的都是executionId
runtimeService.startProcessInstanceByKey(processDefinitionKey, vars);
runtimeService.setVariables(executionId, vars);
runtimeService.setVariablesLocal(executionId, vars)

runtimeService.getVariable(executionId, varName);
runtimeService.getVariableLocal(executionId, varName);

taskService

// ## taskService操作的都是taskId
taskService.setVariables(taskId, vars);
taskService.setVariablesLocal(taskId, vars);
taskService.complete(taskId, vars);
taskService.complete(taskId, vars, localScope);
taskService.complete(taskId, vars, transientVars);

taskService.getVariable(taskId, varName);
taskService.getVariableLocal(taskId, varName);

delegateTask & delegateExecution

delegateTask在TaskListener#notify(DelegateTask)可获取到。

delegateExecution在ExecutionListener#notify(DelegateExecution)可获取到（操作流程变量的api，与delegateTask是类似的）

// ## delegateTask
delegateTask.setVariables(vars);
delegateTask.setVariablesLocal(vars);
delegateTask.setTransientVariables(vars);
delegateTask.setTransientVariableLocal(vars);

delegateTask.getVariable(varName);
delegateTask.getVariable(varName, fetchaAllVariables);
delegateTask.getVariableLocal(varName);
delegateTask.getVariableLocal(varName, fetchaAllVariables);
delegateTask.getTransientVariable(varName);
delegateTask.getTransientVariableLocal(varName);

// ## delegateTask.getExecution()
delegateTask.getExecution().getVariable(varName);
delegateTask.getExecution().getVariable(varName, fetchAllVariables);
delegateTask.getExecution().getVariableLocal(varName);
delegateTask.getExecution().getVariableLocal(varName, fetchAllVariables);
delegateTask.getExecution().getTransientVariable(varName);
delegateTask.getExecution().getTransientVariableLocal(varName);

delegateTask.getExecution().setVariable(varName, val);
delegateTask.getExecution().setVariable(varName, val, fetchAllVariables);
delegateTask.getExecution().setVariableLocal(varName, val);
delegateTask.getExecution().setVariableLocal(varName, val, fetchAllVariables);
delegateTask.getExecution().setTransientVariable(varName,val);
delegateTask.getExecution().setTransientVariableLocal(varName,val);

测试

绘制流程图

在这里插入图片描述
对应的bpmn.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: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="test-var-key" name="test-var-name" isExecutable="true">
    <startEvent id="startEvent1"></startEvent>
    <sequenceFlow id="sid-F041E175-966B-40C4-900D-89EAB5B59938" sourceRef="startEvent1" targetRef="sid-3CCFB6F9-686F-4846-B401-FFF693FA07D8"></sequenceFlow>
    <userTask id="sid-3CCFB6F9-686F-4846-B401-FFF693FA07D8" name="任务1"></userTask>
    <userTask id="sid-E5660C81-BD9A-4EC3-9F33-888D59F201AE" name="任务2"></userTask>
    <sequenceFlow id="sid-3D938ADD-1267-4DB0-BBD4-8B1D6595D9CD" sourceRef="sid-3CCFB6F9-686F-4846-B401-FFF693FA07D8" targetRef="sid-E5660C81-BD9A-4EC3-9F33-888D59F201AE"></sequenceFlow>
    <sequenceFlow id="sid-857BFBEC-CB34-4BDE-A733-4C6CB09CB700" sourceRef="sid-E5660C81-BD9A-4EC3-9F33-888D59F201AE" targetRef="sid-0F1DA5F6-185E-4910-AFC5-A51C170BD35B"></sequenceFlow>
    <parallelGateway id="sid-0F1DA5F6-185E-4910-AFC5-A51C170BD35B"></parallelGateway>
    <userTask id="sid-F6E87384-711F-4244-8B2E-DBFDD7CFA922" name="任务3"></userTask>
    <sequenceFlow id="sid-9ECB4E24-0F17-4632-B5AE-6CA850CE1A83" sourceRef="sid-0F1DA5F6-185E-4910-AFC5-A51C170BD35B" targetRef="sid-F6E87384-711F-4244-8B2E-DBFDD7CFA922"></sequenceFlow>
    <userTask id="sid-6851AA5B-9C2B-4CAB-AE1A-08FB68741B19" name="任务4"></userTask>
    <sequenceFlow id="sid-132CAE85-EF06-4CFA-8E19-F159BD4FCF84" sourceRef="sid-F6E87384-711F-4244-8B2E-DBFDD7CFA922" targetRef="sid-6851AA5B-9C2B-4CAB-AE1A-08FB68741B19"></sequenceFlow>
    <sequenceFlow id="sid-B40FB063-96CF-4073-BBA5-5A51702AA83B" sourceRef="sid-6851AA5B-9C2B-4CAB-AE1A-08FB68741B19" targetRef="sid-E79A7816-1AD6-48FD-823E-30F8E162A82C"></sequenceFlow>
    <parallelGateway id="sid-E79A7816-1AD6-48FD-823E-30F8E162A82C"></parallelGateway>
    <userTask id="sid-4949FC74-BBF4-49EF-A0B0-827B4A0AFBD2" name="任务5"></userTask>
    <userTask id="sid-959DCBAC-E3A1-4B99-9272-C28796B40668" name="任务6"></userTask>
    <sequenceFlow id="sid-990CC958-7511-40FC-A8A5-D0610339CC43" sourceRef="sid-4949FC74-BBF4-49EF-A0B0-827B4A0AFBD2" targetRef="sid-959DCBAC-E3A1-4B99-9272-C28796B40668"></sequenceFlow>
    <sequenceFlow id="sid-D172FE60-24C6-416A-AA18-2CC8E22A6835" sourceRef="sid-0F1DA5F6-185E-4910-AFC5-A51C170BD35B" targetRef="sid-4949FC74-BBF4-49EF-A0B0-827B4A0AFBD2"></sequenceFlow>
    <sequenceFlow id="sid-E34141E5-CAD5-4A68-8B81-F0846E3DC0DA" sourceRef="sid-959DCBAC-E3A1-4B99-9272-C28796B40668" targetRef="sid-E79A7816-1AD6-48FD-823E-30F8E162A82C"></sequenceFlow>
    <userTask id="sid-64C2097E-106D-4E14-8BF0-8A7EDC6A470C" name="任务7"></userTask>
    <sequenceFlow id="sid-88B705AB-B1BB-46A9-AB6F-280C8647FDA7" sourceRef="sid-E79A7816-1AD6-48FD-823E-30F8E162A82C" targetRef="sid-64C2097E-106D-4E14-8BF0-8A7EDC6A470C"></sequenceFlow>
    <userTask id="sid-EDBCDF98-90B0-4A19-AA29-4A66103FA620" name="任务8"></userTask>
    <sequenceFlow id="sid-5B05CAD1-EE33-4D39-A93E-8E71BF2ACC48" sourceRef="sid-64C2097E-106D-4E14-8BF0-8A7EDC6A470C" targetRef="sid-EDBCDF98-90B0-4A19-AA29-4A66103FA620"></sequenceFlow>
    <endEvent id="sid-EF953203-812E-4AF3-B9E1-EB73FA26ADB1"></endEvent>
    <sequenceFlow id="sid-0CA0222D-FEDF-44CD-AA15-73DE43B82F3B" sourceRef="sid-EDBCDF98-90B0-4A19-AA29-4A66103FA620" targetRef="sid-EF953203-812E-4AF3-B9E1-EB73FA26ADB1"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_test-var-key">
    <bpmndi:BPMNPlane bpmnElement="test-var-key" id="BPMNPlane_test-var-key">
      <bpmndi:BPMNShape bpmnElement="startEvent1" id="BPMNShape_startEvent1">
        <omgdc:Bounds height="30.0" width="30.0" x="100.0" y="163.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-3CCFB6F9-686F-4846-B401-FFF693FA07D8" id="BPMNShape_sid-3CCFB6F9-686F-4846-B401-FFF693FA07D8">
        <omgdc:Bounds height="80.0" width="100.0" x="195.0" y="138.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-E5660C81-BD9A-4EC3-9F33-888D59F201AE" id="BPMNShape_sid-E5660C81-BD9A-4EC3-9F33-888D59F201AE">
        <omgdc:Bounds height="80.0" width="100.0" x="345.0" y="138.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-0F1DA5F6-185E-4910-AFC5-A51C170BD35B" id="BPMNShape_sid-0F1DA5F6-185E-4910-AFC5-A51C170BD35B">
        <omgdc:Bounds height="40.0" width="40.0" x="510.0" y="158.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-F6E87384-711F-4244-8B2E-DBFDD7CFA922" id="BPMNShape_sid-F6E87384-711F-4244-8B2E-DBFDD7CFA922">
        <omgdc:Bounds height="80.0" width="100.0" x="595.0" y="75.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-6851AA5B-9C2B-4CAB-AE1A-08FB68741B19" id="BPMNShape_sid-6851AA5B-9C2B-4CAB-AE1A-08FB68741B19">
        <omgdc:Bounds height="80.0" width="100.0" x="740.0" y="75.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-E79A7816-1AD6-48FD-823E-30F8E162A82C" id="BPMNShape_sid-E79A7816-1AD6-48FD-823E-30F8E162A82C">
        <omgdc:Bounds height="40.0" width="40.0" x="870.0" y="158.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-4949FC74-BBF4-49EF-A0B0-827B4A0AFBD2" id="BPMNShape_sid-4949FC74-BBF4-49EF-A0B0-827B4A0AFBD2">
        <omgdc:Bounds height="80.0" width="100.0" x="595.0" y="210.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-959DCBAC-E3A1-4B99-9272-C28796B40668" id="BPMNShape_sid-959DCBAC-E3A1-4B99-9272-C28796B40668">
        <omgdc:Bounds height="80.0" width="100.0" x="740.0" y="210.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-64C2097E-106D-4E14-8BF0-8A7EDC6A470C" id="BPMNShape_sid-64C2097E-106D-4E14-8BF0-8A7EDC6A470C">
        <omgdc:Bounds height="80.0" width="100.0" x="955.0" y="138.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-EDBCDF98-90B0-4A19-AA29-4A66103FA620" id="BPMNShape_sid-EDBCDF98-90B0-4A19-AA29-4A66103FA620">
        <omgdc:Bounds height="80.0" width="100.0" x="1100.0" y="138.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="sid-EF953203-812E-4AF3-B9E1-EB73FA26ADB1" id="BPMNShape_sid-EF953203-812E-4AF3-B9E1-EB73FA26ADB1">
        <omgdc:Bounds height="28.0" width="28.0" x="1245.0" y="164.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="sid-D172FE60-24C6-416A-AA18-2CC8E22A6835" id="BPMNEdge_sid-D172FE60-24C6-416A-AA18-2CC8E22A6835">
        <omgdi:waypoint x="530.5" y="197.5"></omgdi:waypoint>
        <omgdi:waypoint x="530.5" y="250.0"></omgdi:waypoint>
        <omgdi:waypoint x="595.0" y="250.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-857BFBEC-CB34-4BDE-A733-4C6CB09CB700" id="BPMNEdge_sid-857BFBEC-CB34-4BDE-A733-4C6CB09CB700">
        <omgdi:waypoint x="445.0" y="178.18450184501845"></omgdi:waypoint>
        <omgdi:waypoint x="510.4259259259259" y="178.42592592592592"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-990CC958-7511-40FC-A8A5-D0610339CC43" id="BPMNEdge_sid-990CC958-7511-40FC-A8A5-D0610339CC43">
        <omgdi:waypoint x="695.0" y="250.0"></omgdi:waypoint>
        <omgdi:waypoint x="740.0" y="250.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-3D938ADD-1267-4DB0-BBD4-8B1D6595D9CD" id="BPMNEdge_sid-3D938ADD-1267-4DB0-BBD4-8B1D6595D9CD">
        <omgdi:waypoint x="295.0" y="178.0"></omgdi:waypoint>
        <omgdi:waypoint x="345.0" y="178.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-132CAE85-EF06-4CFA-8E19-F159BD4FCF84" id="BPMNEdge_sid-132CAE85-EF06-4CFA-8E19-F159BD4FCF84">
        <omgdi:waypoint x="695.0" y="115.0"></omgdi:waypoint>
        <omgdi:waypoint x="740.0" y="115.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-9ECB4E24-0F17-4632-B5AE-6CA850CE1A83" id="BPMNEdge_sid-9ECB4E24-0F17-4632-B5AE-6CA850CE1A83">
        <omgdi:waypoint x="530.5" y="158.5"></omgdi:waypoint>
        <omgdi:waypoint x="530.5" y="115.0"></omgdi:waypoint>
        <omgdi:waypoint x="595.0" y="115.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-F041E175-966B-40C4-900D-89EAB5B59938" id="BPMNEdge_sid-F041E175-966B-40C4-900D-89EAB5B59938">
        <omgdi:waypoint x="130.0" y="178.0"></omgdi:waypoint>
        <omgdi:waypoint x="195.0" y="178.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-E34141E5-CAD5-4A68-8B81-F0846E3DC0DA" id="BPMNEdge_sid-E34141E5-CAD5-4A68-8B81-F0846E3DC0DA">
        <omgdi:waypoint x="840.0" y="250.0"></omgdi:waypoint>
        <omgdi:waypoint x="890.0" y="250.0"></omgdi:waypoint>
        <omgdi:waypoint x="890.0" y="198.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-0CA0222D-FEDF-44CD-AA15-73DE43B82F3B" id="BPMNEdge_sid-0CA0222D-FEDF-44CD-AA15-73DE43B82F3B">
        <omgdi:waypoint x="1200.0" y="178.0"></omgdi:waypoint>
        <omgdi:waypoint x="1245.0" y="178.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-5B05CAD1-EE33-4D39-A93E-8E71BF2ACC48" id="BPMNEdge_sid-5B05CAD1-EE33-4D39-A93E-8E71BF2ACC48">
        <omgdi:waypoint x="1055.0" y="178.0"></omgdi:waypoint>
        <omgdi:waypoint x="1100.0" y="178.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-B40FB063-96CF-4073-BBA5-5A51702AA83B" id="BPMNEdge_sid-B40FB063-96CF-4073-BBA5-5A51702AA83B">
        <omgdi:waypoint x="840.0" y="115.0"></omgdi:waypoint>
        <omgdi:waypoint x="890.5" y="115.0"></omgdi:waypoint>
        <omgdi:waypoint x="890.5" y="158.5"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="sid-88B705AB-B1BB-46A9-AB6F-280C8647FDA7" id="BPMNEdge_sid-88B705AB-B1BB-46A9-AB6F-280C8647FDA7">
        <omgdi:waypoint x="909.5833333333334" y="178.41666666666666"></omgdi:waypoint>
        <omgdi:waypoint x="955.0" y="178.2183406113537"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

启动流程

将流程部署后，使用runtimeService.startProcessInstanceByKey(procDefKey, vars)开启流程，并且传入自定义变量：p1=p1-p1。

得到流程实例：【流程实例id: 2501 执行实例id: 2501（2501的父执行实例id是null）, 2503（2503的父执行实例id是2501） 当前任务id: 2506（所属执行实例是2503）】

/**
 * 开启流程
 */
@Test
public void test_03() {
    
    
    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
    RuntimeService runtimeService = processEngine.getRuntimeService();
    TaskService taskService = processEngine.getTaskService();

    HashMap<String, Object> vars = new HashMap<>();
    vars.put("p1", "p1-p1");
    runtimeService.startProcessInstanceByKey("test-var-key", vars);

}

runtimeService&taskService查询变量

/**
  * 完成任务
  */
 @Test
 public void test_04() {
    
    
     ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
     RuntimeService runtimeService = processEngine.getRuntimeService();
     TaskService taskService = processEngine.getTaskService();

     // 流程实例id: 2501  执行实例id: 2501, 2503  当前任务id: 2506

     Task task = taskService.createTaskQuery().processInstanceId("2501").singleResult();


     // p1-p1
     // 先执行(先查当前执行实例):
     //      select * from ACT_RU_VARIABLE where EXECUTION_ID_ = '2503' and NAME_= 'p1' and TASK_ID_ is null
     // 再执行(再查父executionId):
     //      select * from ACT_RU_VARIABLE where EXECUTION_ID_ = '2501' and NAME_= 'p1' and TASK_ID_ is null
     System.out.println(runtimeService.getVariable(task.getExecutionId(), "p1"));

     // null
     // 只执行(只查当前执行实例):
     //      select * from ACT_RU_VARIABLE where EXECUTION_ID_ = '2503' and NAME_= 'p1' and TASK_ID_ is null
     System.out.println(runtimeService.getVariableLocal(task.getExecutionId(), "p1"));


     // p1-p1
     // 先执行(先查当前taskId):
     //      select * from ACT_RU_VARIABLE where TASK_ID_ = '2506' and NAME_= 'p1'
     // 再执行(再查当前taskId所属exectionId):
     //      select * from ACT_RU_VARIABLE where EXECUTION_ID_ = '2503' and NAME_= 'p1' and TASK_ID_ is null
     // 再执行(再查当前taskId所属exectionId的父executionId):
     //      select * from ACT_RU_VARIABLE where EXECUTION_ID_ = '2501' and NAME_= 'p1' and TASK_ID_ is null
     System.out.println(taskService.getVariable(task.getId(), "p1"));

     // null
     // 只执行(只查当前taskId):
     //      select * from ACT_RU_VARIABLE where TASK_ID_ = ? and NAME_= ?
     System.out.println(taskService.getVariableLocal(task.getId(), "p1"));

 }

runtimeService&taskService设置变量

@Test
public void test_05() {
    
    

    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
    
    RuntimeService runtimeService = processEngine.getRuntimeService();
    
    TaskService taskService = processEngine.getTaskService();

    Task task = taskService.createTaskQuery().processInstanceId("2501").singleResult();


    // 执行:(这里插入的是父执行实例的executionId: 2501)
    //    insert into ACT_RU_VARIABLE (ID_, REV_, TYPE_, NAME_, PROC_INST_ID_, EXECUTION_ID_, TASK_ID_, BYTEARRAY_ID_, DOUBLE_, LONG_ , TEXT_, TEXT2_) values ( ?, 1, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )
    //                                 5001  1    string e1     2501           2501           null                                      e1-e1
    runtimeService.setVariable(task.getExecutionId(), "e1", "e1-e1");

    // 执行:(这里插入的是当前执行实例的executionId: 2503)
    //    insert into ACT_RU_VARIABLE (ID_, REV_, TYPE_, NAME_, PROC_INST_ID_, EXECUTION_ID_, TASK_ID_, BYTEARRAY_ID_, DOUBLE_, LONG_ , TEXT_, TEXT2_) values ( ?, 1, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )
    //                                 7501 1,    string,e11,   2501,          2503(String),  null,                                     e11-e11(String)
    runtimeService.setVariableLocal(task.getExecutionId(), "e11", "e11-e11");

    // 执行:(这里居然没有插入taskId, 而是插入了procInstId和executionId, 并且其中的executionId是父executionId, 效果与runtimeService.setVariable(task.getExecutionId(), "e1", "e1-e1");一致)
    //    insert into ACT_RU_VARIABLE (ID_, REV_, TYPE_, NAME_, PROC_INST_ID_, EXECUTION_ID_, TASK_ID_, BYTEARRAY_ID_, DOUBLE_, LONG_ , TEXT_, TEXT2_) values ( ?, 1, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )
    //                                10001,1     string,t1,    2501,          2501,          null,                                     t1-t1
    taskService.setVariable(task.getId(), "t1", "t1-t1");


    // 执行:(这里插入了taskId, 并且插入了对应的procInstId和当前执行实例executionId)
    //    insert into ACT_RU_VARIABLE (ID_, REV_, TYPE_, NAME_, PROC_INST_ID_, EXECUTION_ID_, TASK_ID_, BYTEARRAY_ID_, DOUBLE_, LONG_ , TEXT_, TEXT2_) values ( ?, 1, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )
    //                                 12501,1    string,t11,   2501,          2503,          2506,                                     t11-t11
    taskService.setVariableLocal(task.getId(), "t11", "t11-t11");

}

taskService#complete传入变量

/**
 * 完成任务
 */
@Test
public void test_05() {
    
    
    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
    RuntimeService runtimeService = processEngine.getRuntimeService();
    TaskService taskService = processEngine.getTaskService();

    // 流程实例id: 2501  执行实例id: 2501, 2503  当前任务id: 2506

    Task task = taskService.createTaskQuery().processInstanceId("2501").singleResult();

    HashMap<String, Object> vars = new HashMap<>();
    vars.put("t2", "t2-t2");

    // 执行:(这里插入了taskId, 并且插入了对应的procInstId和当前执行实例executionId, 等同于taskService.setVariable(task.getId(), varName, var);)
    //      insert into ACT_RU_VARIABLE (ID_, REV_, TYPE_, NAME_, PROC_INST_ID_, EXECUTION_ID_, TASK_ID_, BYTEARRAY_ID_, DOUBLE_, LONG_ , TEXT_, TEXT2_) values ( ?, 1, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )
    //                                   15001,1    string,t2,    2501(String),  2501(String),                                            t2-t2,
    taskService.complete(task.getId(), vars); // 同: taskService.complete(task.getId(), vars, false);

    // 此任务完成之后, 不会往act_ru_variable表中插入数据
    // taskService.complete(task.getId(), vars, true);

}

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