创建父目录(如果不存在)

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英文:

Mkdir Creates Parent Directory If not exist

问题

以下是翻译好的部分:

当我使用下面的代码时,即使在D盘上\scrshot\vb不存在,它也会创建\scrshot\vb\uv。

takeScreenshot("D:\\scrshot\\vb\\uv", "s.png");

public void takeScreenshot(String fileDir, String fileName) {

    File directory = new File(fileDir);
    if (!directory.exists())
        directory.mkdir();
    File file = ((TakesScreenshot) ddr).getScreenshotAs(OutputType.FILE);
    try {
        FileUtils.copyFile(file, new File(directory.getAbsolutePath() + File.separator + fileName));
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

如果我的理解是正确的,mkdir()在父文件夹不存在时不会创建父文件夹。但在这里,它在D盘下创建了\scrshot\vb\。有关参考,请查看此线程

英文:

When I use below code, Its creating \scrshot\vb\uv even though \scrshot\vb not exist in D drive.

takeScreenshot("D:\\scrshot\\vb\\uv", "s.png");

	public void takeScreenshot(String fileDir,String fileName)
	{
		
		
		File directory=new File(fileDir);
		if(!directory.exists())
			directory.mkdir();
		File file=((TakesScreenshot)ddr).getScreenshotAs(OutputType.FILE);
		try {
			FileUtils.copyFile(file,new File(directory.getAbsolutePath()+File.separator+fileName));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		   
		
		
	}

If my understanding is correct mkdir() would not create parent folder if it does not exist. but here its creating \scrshot\vb\ under D drive. this thread for reference.

答案1

得分: 3

我假设您正在使用Apache Commons的FileUtil文档 清楚地说明,如果目标文件的目录不存在,将会创建它:

> 此方法将指定源文件的内容复制到指定的目标文件中。**如果目标文件的目录不存在,将会创建它。**如果目标文件已存在,那么此方法将覆盖它。

英文:

I assume you are using Apache Commons FileUtil. The documentation states clearly that the directory containing the destination File will be created if it doesn't exist:

> This method copies the contents of the specified source file to the
> specified destination file. The directory holding the destination file
> is created if it does not exist.
If the destination file exists, then
> this method will overwrite it.

答案2

得分: 0

mkdir()永远不会创建父目录

但在你的代码中

FileUtils.copyFile(file, new File(directory.getAbsolutePath() + File.separator + fileName));

这一行负责创建一个目录。

英文:

mkdir() never create parent directory

but in your code

FileUtils.copyFile(file,new File(directory.getAbsolutePath()+File.separator+fileName));

This line is responsible to create a directory.

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  • 本文由 发表于 2020年4月10日 01:41:27
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