问题描述
List<ProcessInstance> instances =
processEngine.getRuntimeService().createProcessInstanceQuery().processInstanceId(processInstanceId).list();
instances.forEach(this::listProcessInstance);
private void listProcessInstance (ProcessInstance processInstance) {
log.info("<-------------- ProcessInstance ---------------> {} ",processInstance);
log.info(String.valueOf(processInstance.getProcessVariables()));
log.info("<-------------- ProcessInstance --------------->");
}
其中 ProcessVariables 为 null,但在 tabla 上有信息:
select * from ACT_RU_VARIABLE where PROC_INST_ID_ = 76759;
解决方法
出于性能原因,默认查询不返回流程变量。您必须明确告诉查询包含变量:
List<ProcessInstance> instances = processEngine.getRuntimeService().createProcessInstanceQuery().processInstanceId(processInstanceId).includeProcessVariables().list();
,
试试下面的代码片段,
ProcessInstanceQuery processInstanceQuery = runtimeService.createProcessInstanceQuery().processInstanceIds(processInstanceIds);
List<ProcessInstance> processInstances = processInstanceQuery.list();
for (ProcessInstance processInstance : processInstances) {
log.info(processInstance.getId());
log.info(processInstance.getProcessVariables());
}