复制文件Java

Question

我正在尝试使用Java复制文件。我有一个需要复制的文件对象的arraylist,但是当实际复制发生时，目标文件夹会变成一个文件，不会复制任何东西

                System.out.println("Dest: " + destPath.toString());

                ArrayList<File> fileList = listFiles(sourceDir);
                for (File file : fileList) {
                    Path sourcePath = Paths.get(file.getPath());
                    System.out.print("\r\nSource: " + sourcePath.toString());
                    CopyOption[] options = new CopyOption[] {
                            StandardCopyOption.REPLACE_EXISTING,
                            StandardCopyOption.COPY_ATTRIBUTES
                    };
                    try {
                        Files.copy(sourcePath, destPath, options);
                    } catch (IOException e1) {
                        // TODO Auto-generated catch block
                        e1.printStackTrace();
                    }
                }

Answer 1

一种方法是使用Apache commons IOFileSutils。

    try {
        Path fileToCopy = Paths.get("path-of-file-to-copy");
        FileUtils.copyFile(fileToCopy.toFile(), new File("your-destination-path"));
    } catch (IOException e) {
        //handle
    }

另一种方法是使用标准Java NIOfiles.copy()方法

 try {
      Path fileToCopy = Paths.get("path-of-file-to-copy");
      Files.copy(fileToCopy, Paths.get("your-destination-path"));
    } catch (IOException e) {
       //handle
    }