activiti 5.16 businessKey 为null 处理

╰半夏微凉° 2023-02-24 08:25 18阅读 0赞

activiti版本 5.16

产生原因：创建子流程时，businesskey 不传递。

解决如下：

1、创建监听类：

import org.activiti.engine.delegate.event.ActivitiEntityEvent;
    import org.activiti.engine.delegate.event.ActivitiEvent;
    import org.activiti.engine.delegate.event.ActivitiEventListener;
    import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
    import org.activiti.engine.impl.persistence.entity.TaskEntity;
    import org.apache.commons.lang3.StringUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    public class BusinessKeyInjectionActivitiEventListener implements ActivitiEventListener {
        private Logger log = LoggerFactory.getLogger(getClass());
        @Override
        public void onEvent(ActivitiEvent event) {
            switch (event.getType()) {
                case TASK_CREATED:
                    if (event instanceof ActivitiEntityEvent) {
                        ActivitiEntityEvent activityEntityEvent = (ActivitiEntityEvent) event;
    
                        TaskEntity taskEntity = (TaskEntity) activityEntityEvent.getEntity();
                        ExecutionEntity exEntity = taskEntity.getExecution();
                        String key = exEntity.getBusinessKey();
                        log.info("获取当前任务的流程实例的businessKey:{}",key);
                        if(StringUtils.isEmpty(key)){
                            ExecutionEntity superExecEntity = exEntity.getSuperExecution();
                            key=superExecEntity.getBusinessKey();
                            if(StringUtils.isEmpty(key)){
                                key=superExecEntity.getProcessInstance().getBusinessKey();
                            }
                            log.info("获取当前任务 上一个流程实例的businessKey:{}",key);
                            log.info("设置当前流程实例的businessKey:{}",key);
                            exEntity.setBusinessKey(key);
                            //让businessKey生效 此处非常关键。
                            exEntity.updateProcessBusinessKey(key);
                        }
                        break;
                    }
                default:
                    break;
            }
        }
    
        @Override
        public boolean isFailOnException() {
            // TODO Auto-generated method stub
            return false;
        }
    }

2、配置监听：