[英]Finding all the files of a certain extension in a project's source folder
Hello I am trying to retrieve the names of all the files of the type .mp3
from a source folder(below)您好,我正在尝试从源文件夹中检索
.mp3
类型的所有文件的名称(如下)
Below is the code I am using to differentiate the file type and add to the list.下面是我用来区分文件类型并添加到列表中的代码。 However I do not know which parameter I should enter into the
directory
it should be music
folder however I do not know how to represent this.但是我不知道我应该将哪个参数输入到它应该是
music
文件夹的directory
,但是我不知道如何表示这一点。
File dir = new File("");
String[] files = dir.list(new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.toLowerCase().endsWith(".mp3");
};
});
for(int a = 0; a < files.length; a++)
{
musicList.add(files[a]);
}
Try this.试试这个。
List<String> result = Files.find(Paths.get("music"), 100,
(p, a) -> p.toString().toLowerCase().endsWith(".mp3"))
.map(path -> path.toString())
.collect(Collectors.toList());
if you are using Servlet :如果您使用的是 Servlet :
ServletActionContext.getServletContext().getRealPath("music");
if using Spring :如果使用 Spring :
ClassLoader classLoader = getClass().getClassLoader();
File file = new File(classLoader.getResource("music").getFile());
System.out.println(file.getAbsolutePath());
For javafx see this:对于 javafx,请参见:
How to target a file (a path to it) in Java/JavaFX 如何在 Java/JavaFX 中定位文件(它的路径)
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