如何使用NIO的文件流高效复制文件？

本文共计106个文字，预计阅读时间需要1分钟。

javapublic static void nioCopyFile(String resource, String destination) throws IOException { Files.copy(Paths.get(resource), Paths.get(destination));}

public static void nioCopyFile(String resource, String destination) throws IOException { FileInputStream fis = new FileInputStream(resource); FileOutputStream fos = new FileOutputStream(destination); FileChannel readChannel = fis.getChannel(); //读文件通道 FileChannel writeChannel = fos.getChannel(); //写文件通道 ByteBuffer buffer = ByteBuffer.allocate(1024); //读入数据缓存 while (true) { buffer.clear(); int len = readChannel.read(buffer); //读入数据 if (len == -1) { break; //读取完毕 } buffer.flip(); writeChannel.write(buffer); //写入文件 } readChannel.close(); writeChannel.close(); }