列出文件夹和子文件夹中的所有文件
列出文件夹和子文件夹中的所有文件
提问于 2013-02-04 03:34:43
可能重复：
List all files from a directory recursively with Java
如何返回包含文件夹和子文件夹中所有文件的文件数组?我的方法只适用于文件夹，而不包含子文件夹。
public File[] listf(String directoryName) {
// .............list file
File directory = new File(directoryName);
// get all the files from a directory
File[] fList = directory.listFiles();
for (File file : fList) {
if (file.isFile()) {
System.out.println(file.getAbsolutePath());
} else if (file.isDirectory()) {
listf(file.getAbsolutePath());
}
}
System.out.println(fList);
return fList;
} 回答 3
Stack Overflow用户
回答已采纳
发布于 2013-02-04 03:41:40
使用您当前的代码，进行以下调整：
public void listf(String directoryName, List<File> files) {
File directory = new File(directoryName);
// Get all files from a directory.
File[] fList = directory.listFiles();
if(fList != null)
for (File file : fList) {
if (file.isFile()) {
files.add(file);
} else if (file.isDirectory()) {
listf(file.getAbsolutePath(), files);
}
}
}Stack Overflow用户
发布于 2013-02-04 03:37:28
使用Apache commons中的FileUtils。
listFiles
public static Collection<File> listFiles(File directory,
String[] extensions,
boolean recursive)
Finds files within a given directory (and optionally its subdirectories) which match an array of extensions.
Parameters:
directory - the directory to search in
extensions - an array of extensions, ex. {"java","xml"}. If this parameter is null, all files are returned.
recursive - if true all subdirectories are searched as well
Returns:
an collection of java.io.File with the matching filesStack Overflow用户
发布于 2013-02-04 03:45:24
你可以返回一个List而不是数组，事情就变得简单多了。
public static List<File> listf(String directoryName) {
File directory = new File(directoryName);
List<File> resultList = new ArrayList<File>();
// get all the files from a directory
File[] fList = directory.listFiles();
resultList.addAll(Arrays.asList(fList));
for (File file : fList) {
if (file.isFile()) {
System.out.println(file.getAbsolutePath());
} else if (file.isDirectory()) {
resultList.addAll(listf(file.getAbsolutePath()));
}
}
//System.out.println(fList);
return resultList;
} 页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/14676407
复制相关文章
相似问题