isInstance方法的用法:
QyConstrPerfor qyConstrPerfor = new QyConstrPerfor();
QyConstrPerfor.class.isInstance(qyConstrPerfor) //判斷某個對象是否是屬於某個類
isAssignableFrom:
QyConstrPerfor.class.isAssignableFrom(QyConstrPerfor.class)//判斷某個類是否屬於某個類 (後者屬於前者)
AnnotationUtils.findAnnotation:
AnnotationUtils.findAnnotation(QyQualCheckCancelController.class, ResponseBody.class) != null
查找第一個參數類中,是否涵蓋ResponseBody註解。如果有,就返回此註解,沒有就返回空