您需要使用walkFileTree复制目录。如果在
目录上使用Files.copy，则只会创建一个空目录。
以下代码摘自/改编自http://codingjunkie.net/java-7-copy-move/
File src = new File("c:\temp\srctest");File dest = new File("c:\temp\desttest");Path srcPath = src.toPath();Path destPath = dest.toPath();Files.walkFileTree(srcPath, new CopyDirVisitor(srcPath, destPath, StandardCopyOption.REPLACe_EXISTING));public static class CopyDirVisitor extends SimpleFileVisitor<Path>{ private final Path fromPath; private final Path toPath; private final CopyOption copyOption; public CopyDirVisitor(Path fromPath, Path toPath, CopyOption copyOption) { this.fromPath = fromPath; this.toPath = toPath; this.copyOption = copyOption; } @Override public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException { Path targetPath = toPath.resolve(fromPath.relativize(dir)); if( !Files.exists(targetPath) ) { Files.createDirectory(targetPath); } return FileVisitResult.CONTINUE; } @Override public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException { Files.copy(file, toPath.resolve(fromPath.relativize(file)), copyOption); return FileVisitResult.CONTINUE; }}
