java localdatetime转gmt

要将Java LocalDateTime转换为GMT时间，可以使用以下代码：

import java.time.LocalDateTime;
import java.time.ZoneOffset;

public class LocalDateTimeTest {
    public static void main(String[] args) {
        LocalDateTime localDateTime = LocalDateTime.now();
        System.out.println("LocalDateTime: " + localDateTime);

        LocalDateTime gmtDateTime = localDateTime.atOffset(ZoneOffset.UTC).toLocalDateTime();
        System.out.println("GMT LocalDateTime: " + gmtDateTime);
    }
}

在这个例子中，我们使用`atOffset()`方法将当前的`LocalDateTime`对象转换为GMT偏移量，并使用`toLocalDateTime()`方法将其转换回GMT时间。

输出结果将会是GMT的`LocalDateTime`时间。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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