fileutils - Apache Commons IO FileUtils 列表文件 : how to get list of files with no extension?

Question

我正在尝试使用 org.apache.commons.io.FileUtils.listFiles() 获取没有扩展名的文件列表，如下所示 http://www.avajava.com/tutorials/lessons/how-do-i-get-all-files-with-certain-extensions-in-a-directory-including-subdirectories.html

package test;

import java.io.File;
import java.io.IOException;
import java.util.List;

import org.apache.commons.io.FileUtils;

public class GetAllFilesInDirectoryBasedOnExtensions {

    public static void main(String[] args) throws IOException {

        File dir = new File("dir");
        String[] extensions = new String[] { "txt", "jsp" };
        System.out.println("Getting all .txt and .jsp files in " + dir.getCanonicalPath()
                + " including those in subdirectories");
        List<File> files = (List<File>) FileUtils.listFiles(dir, extensions, true);
        for (File file : files) {
            System.out.println("file: " + file.getCanonicalPath());
        }

    }

}

但我需要一个没有扩展名的文件列表。我试过 {".", ""} 但没有用。有可能吗？

Answer 1

正如@Jens 在他的评论中所报告的那样，null 参数可以解决问题: