java - 如何使用 Java 根据文件名中的特定字符删除所有文件

Question

我想知道是否有办法增强下面的代码，不仅匹配而且删除名称中包含“e”字符的所有文件和目录。任何帮助表示赞赏！

先感谢您。

这是代码：

import java.io.*;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;

class Finder extends SimpleFileVisitor<Path> {
    private final PathMatcher matcher;
    Finder() {
        matcher = FileSystems.getDefault().getPathMatcher("glob:*e*");
    }

    //@Override 
    public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
        find(file);
        return FileVisitResult.CONTINUE;
    }

    //@Override 
    public FileVisitResult preVisitDirectory(Path file, BasicFileAttributes attrs) {
        find(file);
        return FileVisitResult.CONTINUE;
    }

    void find(Path file) {
        Path name = file.getFileName();
        if(matcher.matches(name)) {
            System.out.println("Matched file: " + file.getFileName());
        }
    }
}

public class FileVisitor2 {
    public static void main(String[] args) throws IOException {
        Finder finder = new Finder();
        Path p = Paths.get("C:\\Users\\El\\School\\DirMain");
        Files.walkFileTree(p, finder);
    }
}

Answer 1

You could use apache commons library org.apache.commons.io.FileUtils to delete files/directory as this FileUtils.deleteQuitely() allows to delete non empty dirs as well.

 FileUtils.deleteQuietly(new File(path.toUri()));

something like below:

void find(Path file) {
    Path name = file.getFileName();
    if(matcher.matches(name)) {
        System.out.println("Matched file: " + file.getFileName());
        FileUtils.deleteQuietly(new File(file.toUri()));
    }
}