我可能缺少一些小东西，但找不到。使用file.getFileName（）。endsWith（“。mp3”），布尔值始终为false。如果我将te文件重命名为* .mp并将代码更改为endsWith（“。mp”），则会找到它们。这里会发生什么？
问候，
耶尔茂
编辑：文件是一个路径对象顺便说一句。
档案名称：
/home/jelmer/Music/01 - Nightwish - Shudder Before The Beautiful.mp3
/home/jelmer/Music/02 - Nightwish - Weak Fantasy.mp3
/home/jelmer/Music/03 - Elan (Album Version).mp3
/home/jelmer/Music/04- Nightwish - Yours Is An Empty Hope.mp3
/home/jelmer/Music/05 - Nightwish - Our Decades In The Sun.mp3
/home/jelmer/Music/06 - Nightwish - My Walden.mp3
/home/jelmer/Music/07 - Nightwish - Endless Forms Most Beautiful.mp3
/home/jelmer/Music/08 - Nightwish - Edema Ruh.mp3
/home/jelmer/Music/09 - Nightwish - Alpenglow.mp3
/home/jelmer/Music/10 - Nightwish - Eyes Of Sharbat Gula.mp3
/home/jelmer/Music/11 - Nightwish - The Greatest Show on Earth.mp3
/home/jelmer/Music/test.mp3
public class mp3Walker extends SimpleFileVisitor<Path> {
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
if(file.getFileName().endsWith(".mp3")) {
System.out.println(file);
}
System.out.println("done with file: "+file.getFileName());
return FileVisitResult.CONTINUE;
}
public static void main(String[] args) throws IOException {
mp3Walker walker= new mp3Walker();
Files.walkFileTree(Paths.get("/home/jelmer/Music/"), walker);
}
}
输出：
done with file: 07 - Nightwish - Endless Forms Most Beautiful.mp3
done with file: test.mp3
done with file: 08 - Nightwish - Edema Ruh.mp3
done with file: 05 - Nightwish - Our Decades In The Sun.mp3
done with file: 02 - Nightwish - Weak Fantasy.mp3
done with file: 11 - Nightwish - The Greatest Show on Earth.mp3
done with file: 01 - Nightwish - Shudder Before The Beautiful.mp3
done with file: 10 - Nightwish - Eyes Of Sharbat Gula.mp3
done with file: 04- Nightwish - Yours Is An Empty Hope.mp3
done with file: 06 - Nightwish - My Walden.mp3
done with file: 03 - Elan (Album Version).mp3
done with file: 09 - Nightwish - Alpenglow.mp3
最佳答案
这是因为Path的.endsWith()需要路径的完整元素。
那是：
Paths.get("foo").endsWith("oo")
等效于：
Paths.get("foo").endsWith(Paths.get("oo"))
总是返回false。
您要测试文件名的字符串值：
path.getFileName().toString().endsWith(".mp3")