我是一个初学者,我想将一个长的 gettime 分成 4 个用于 Modbus 协议的短裤,但它并不总是有效。我不知道为什么(可能是因为选角)。我希望有人可以帮助我:)
提前感谢那些可以启发我的人!
public void SetUp() {
long time = new Date().getTime(); // time in ms since epoch
System.out.println(time);
int high32 = (int)(time >> 32);
int low32 = (int)time;
long l = (((long)high32) << 32) | (low32 & 0xffffffffL);
short low16_1 = (short) high32;
short high16_1= (short) (high32 >> 16);
int complete = low16_1 | (high16_1 << 16);
short low16_2 = (short) low32;
short high16_2= (short) (low32 >> 16);
int complete2 = low16_2 | (high16_2 << 16);
long d = (((long)complete) << 32) | (complete2 & 0xffffffffL);
System.out.println(l);
System.out.println(d);
Date e = new Date (time);
System.out.println(e);
Date g = new Date (d);
System.out.println(g);
}
显示示例:
1530430114623
1530430114623
1530430114623
Sun Jul 01 09:28:34 CEST 2018
Sun Jul 01 09:28:34 CEST 2018
1530431375214
1530431375214
1533303293806
Sun Jul 01 09:49:35 CEST 2018
Fri Aug 03 15:34:53 CEST 2018