使用FileUtils获取文件夹下所有指定文件

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• org.apache.commons.io.FileUtils

 

public static Collection 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 files