for (FlowElement flowElement : flowElements) {
if (flowElement instanceof UserTask) {
UserTask userTask = (UserTask) flowElement;
for (ResourceRole resourceRole : userTask.getResources()) {
if (resourceRole.getClass().getSimpleName().equals("HumanPerformerImpl")) {
HumanPerformer humanPerformer = (HumanPerformer) resourceRole;
humanPerformers.add(humanPerformer);
}
}
if (humanPerformers.size() > 1) {
sb.append("分配任务中独占类型有且只能存在一个;");