如何获取java新IO的Path文件大小

import org.junit.Test;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
public class TestFileSize {
  @Test
  public void getSize() throws IOException {
    Path file = Paths.get("F:\\logs\\spider.log");
    long length = Files.size(file);
    System.out.printf("文件大小:%d byte",length);
  }
}