this.template = (Template) this.clazz.getAnnotation(Template.class);
Groups groupsAnnotation = (Groups) this.clazz.getAnnotation(Groups.class);
if (groupsAnnotation != null) {
// 保存显示定义的组
groups.addAll(Arrays.asList(groupsAnnotation.groups()));
}
// 保存默认组
groups.add(getDefaultGroup());
// 设定当前组