普元 EOS Platform 7.6 人工活动启动多工作项设置顺序执行，在工作项创建后，调用触发事件，执行finishWorkItemDirectly报错：Create WFTaskSequenceStructure error , the parameter's value is null .

【问题】

“主管审批”环节启用多工作项，选择“顺序执行工作项”，提交“申请报销”环节，控制台报错：

触发事件调用的逻辑流：newbiz1.bizx

Caused by: ErrCode: 21070018
Message: 执行触发事件发生异常，触发事件类型[after-create-wi]
 at com.primeton.workflow.engine.scheduler.application.impl.ToolAgentManager.executeTriggerEvents(ToolAgentManager.java:338)
 at com.primeton.workflow.engine.scheduler.application.impl.ToolAgentManager.executeTriggerEvent(ToolAgentManager.java:309)
 at com.primeton.workflow.engine.scheduler.event.TriggerEventHandler.invoke(TriggerEventHandler.java:24)
 at com.primeton.workflow.event.framework.event.base.WFEventExecutor.handleEvent(WFEventExecutor.java:175)
 ... 84 more
Caused by: ErrCode: 21070016
Message: 执行应用调用发生异常:logic-flow
 at com.primeton.workflow.engine.scheduler.application.impl.ToolAgentManager.executeApplication(ToolAgentManager.java:361)
 at com.primeton.workflow.engine.scheduler.application.impl.log.ApplicationLogAction.execute(ApplicationLogAction.java:69)
 at com.primeton.workflow.engine.scheduler.enginelog.EngineLogExecutor.executeAction(EngineLogExecutor.java:162)
 at com.primeton.workflow.engine.scheduler.application.impl.ToolAgentManager.executeTriggerEvents(ToolAgentManager.java:336)
 ... 115 more
Caused by: ErrCode: 21000000
Message: NULL
 at com.primeton.workflow.api.proxy.EngineTxAction.doOperator(EngineTxAction.java:311)
 at com.primeton.workflow.api.proxy.EngineTxAction.execute(EngineTxAction.java:272)
 ... 118 more
Caused by: ErrCode: 21000000
Message: ( Create WFTaskSequenceStructure error , the parameter's  value is null .)
 at com.primeton.workflow.engine.scheduler.task.sequence.WFTaskSequenceStructure.createParticipantSequenceStructure(WFTaskSequenceStructure.java:105)
 at com.primeton.workflow.engine.scheduler.task.sequence.WFTaskSequenceStructure.<init>(WFTaskSequenceStructure.java:98)
 at com.primeton.workflow.engine.scheduler.task.sequence.WFTaskSequenceStructure.getParticipantSequenceStructure(WFTaskSequenceStructure.java:151)
 at com.primeton.workflow.engine.scheduler.event.handle.task.WFTaskSchedulerHelper.isActInstFinishEnable(WFTaskSchedulerHelper.java:185)
 at com.primeton.workflow.engine.scheduler.event.handle.task.WFTaskScheduler.taskHasFinished(WFTaskScheduler.java:237)
 at com.primeton.workflow.api.listener.WFTaskListener.OnMessage(WFTaskListener.java:25)
 at com.primeton.workflow.task.message.impl.TaskMessageCenter.fireTaskMessage(TaskMessageCenter.java:104)
 at com.primeton.workflow.task.service.scheduler.TaskScheduler.finishWorkItemSimple(TaskScheduler.java:1066)
 at com.primeton.workflow.task.engtask.WFWorkItemOperateImpl.finishWorkItemDirectly(WFWorkItemOperateImpl.java:1468)
 at com.primeton.workflow.api.engtask.WorkItemManagerImpl.finishWorkItemDirectly(WorkItemManagerImpl.java:339)
 ... 185 more

【解答】

问题原因：触发事件在调用finishWorkItemDirectly时，“主管审批”环节工作项创建后数据还未保存成功，所以执行报错了

建议方案：

方案1、设置触发事件调用方式为异步，在finishWorkItemDirectly之前sleep()保证工作项创建完成。示例demo，运行demo时请将参与者更换为项目中员工

方案2、调用finishWorkItemDirectly之前，先调用queryNextWorkItemsByWorkItemID()根据已完成的工作项ID查后继活动工作项。

方案3、“主管审批”多工作项不设置顺序执行，在业务端进行处理，实现顺序执行