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Introduction to the method of batch modifying file suffixes in Java

Mar 21, 2019 pm 04:35 PM
java

本篇文章给大家带来的内容是关于java批量修改文件后缀的方法介绍,有一定的参考价值,有需要的朋友可以参考一下,希望对你有所帮助。

突然需要改一堆文件的后缀名,所以想编程解决,话不多说直接上代码

java

import java.io.File;
import java.util.Scanner;

public class FileEdit {

    public static void renameFiles(String path, String oldExt, String newExt) {
        File file = new File(path);
        if (!file.exists()) {
            System.err.println("文件路径不存在!");
            return;
        }
        File[] files = file.listFiles();
        if (files.length <= 0) {
            System.err.println("当前路径文件不存在!");
            return;
        }
        for (File f : files) {
            if (f.isDirectory()) {
                renameFiles(f.getPath(), oldExt, newExt);
            } else {
                String name = f.getName();
                if (name.endsWith("." + oldExt)) {
                    name = name.substring(0, name.lastIndexOf(".") + 1);
                    name += newExt;
                    f.renameTo(new File(f.getParent() + "\\" + name));
                }
            }
        }
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入要修改文件后缀名的文件夹:");
        String path = sc.nextLine();
        System.out.println("请输入修改前的后缀名:");
        String oldExt = sc.nextLine();
        System.out.println("请输入修改后的后缀名:");
        String newExt = sc.nextLine();

        renameFiles(path, oldExt, newExt);
        System.out.println("操作完成");
    }
}
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其他方法

在网上查了下,发现还有cmd命令可以解决,比如将txt后置改为7z,那么在你需要修改的目录运行cmd然后输入命令ren *.txt *.rar,就可以将所有txt结尾的文件进行修改;此外可以将本命令保存为bat脚本文件,双击进行运行。

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