如何在 Java 中初始化 Google 协议缓冲区时间戳？
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How to initialize Google protocol buffers Timestamp in Java?
提问by l00tr
Google protocol buffers (3.0.0-beta2) offers the well-known type Timestamp.
Google protocol buffers (3.0.0-beta2) 提供了众所周知的 Timestamp 类型。
The documentation describes the initialization in Javausing System.currentTimeMillis()as following:
该文档描述了使用System.currentTimeMillis()在 Java中的初始化如下：
long millis = System.currentTimeMillis();
Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)
.setNanos((int) ((millis % 1000) * 1000000)).build();
Is there an alternative wayin the recent Java 8?
最近的Java 8 中是否有替代方法？
回答by l00tr
Starting with Java 8, there is the new Date/Time-APIwhich makes this more appealing to the reader using java.time.Instant
从Java 8开始，有新的Date/Time-API使用java.time.Instant使这对读者更具吸引力
Instant time = Instant.now();
Timestamp timestamp = Timestamp.newBuilder().setSeconds(time.getEpochSecond())
.setNanos(time.getNano()).build();
The result should be the same concerning precision.
关于精度，结果应该是相同的。
回答by Isaac Sheff
These days, you can use:
这些天，您可以使用：
import static com.google.protobuf.util.Timestamps.fromMillis;
import static java.lang.System.currentTimeMillis;
import com.google.protobuf.Timestamp;
...
Timestamp timestamp = fromMillis(currentTimeMillis());
See documentation at:
请参阅以下位置的文档：
