JAVA 后端 记录方法运行时间

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 ==========================================================");