java - 使用 Activiti 工作流程跳过或完成用户任务

Question

有没有办法用 Java 完成或跳过 activiti 用户任务？ 我实现了一个 TaskListener 来执行此操作，但是当我调用此代码时:

delegateTask.getExecution().getEngineServices().getTaskService().complete( task.getId() );

我得到这个异常:

Caused by: org.activiti.engine.ActivitiException: UserTask should not be signalled before complete
    at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.signal(UserTaskActivityBehavior.java:146)
    at org.activiti.engine.impl.persistence.entity.ExecutionEntity.signal(ExecutionEntity.java:407)
    at org.activiti.engine.impl.persistence.entity.TaskEntity.complete(TaskEntity.java:201)
    at org.activiti.engine.impl.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:50)
    at org.activiti.engine.impl.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:24)
    at org.activiti.engine.impl.cmd.NeedsActiveTaskCmd.execute(NeedsActiveTaskCmd.java:59)
    at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24)
    at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57)
    at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
    at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)[415:org.activiti.engine:5.17.0]
    at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)[415:org.activiti.engine:5.17.0]
    at org.activiti.engine.impl.TaskServiceImpl.complete(TaskServiceImpl.java:179)
    at Proxy7b61ad98_bd2d_436d_94dd_1e7381cca64e.complete(Unknown Source)

Answer 1

您无法在任务监听器中完成任务，因为上下文仍在实例化中。如果您想跳过某项任务，您应该使用网关来执行此操作。

另一种仅在 xml 级别受支持(未在建模器中公开)的替代方案是使用以下博客中记录的跳过表达式语法，效果非常好:

https://blog.canang.com.my/2016/09/30/whats-activiti-skiptask-about/