LocalDateTime ldStart= LocalDateTime.now();//记录开始时间
//中间是需要计算时间的代码段落
LocalDateTime ldEnd= LocalDateTime.now();//记录结束时间
Duration du=Duration.between(ldStart,ldEnd);
Long costSeconds = du.toMillis()/1000;
System.out.println("postNurseControl() cost: "+ costSeconds +" seconds ==========================================================");