批量转化字符编码

今天在做项目中，需要用到一些CSS和JS文件，于是将之前项目中的文件拷贝过来，项目运行时发现出现乱码，于是便开始修改，结果改的时候发现四五十个文件，这不得改半天！索性自己写了个工具类，批量修改字符编码，几秒钟完事，分享给大家，以后再也不用单独修改编码了。

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

/**
 *  字符编码转化工具类
 *  可以批量对文件编码格式进行转化   支持同时修改多个文件夹中的文件
 *  auther: wugongzi
 *  date: 2020-8-21
 */
public class ConvertEncode {
    //源文件路径
    private String sDirectory = "E:\\Work\\css";
    //目标文件路径
    private String dDirectory = "E:\\Work\\css1";

    public static void main(String[] args) {
        ConvertEncode encode = new ConvertEncode();
        try {
            encode.readerFile(encode.sDirectory);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void readerFile(String filePath) throws IOException {
        if ("".equals(filePath) || null == filePath) {
            return;
        }

        File f = new File(filePath);
        if (f.isDirectory()) {
            String[] child = f.list();
            for (int i = 0; i < child.length; i++) {
                String path = f.getAbsolutePath() + File.separator;
                String newPath = path.replace(this.sDirectory, this.dDirectory);
                child[i] = path + child[i];
                File c = new File(child[i]);
                String newFile = child[i].replace(this.sDirectory, this.dDirectory);
                System.out.println("旧路径：" + path);
                System.out.println("新路径：" + newPath);

                File newP = new File(newPath);
                if (!newP.exists())
                    newP.mkdir();

                if (c.isFile()) {
                    System.out.println("旧文件：" + child[i]);
                    System.out.println("新文件：" + newFile);
                    //源文件编码格式  支持以下格式Charset US-ASCII ISO-8859-1 UTF-8 UTF-16BE UTF-16LE UTF-16
                    BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(c), "GBK"));
                    File newF = new File(newFile);
                    newF.createNewFile();
                    // 目标文件编码格式
                    BufferedWriter w = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newF), "UTF-8"));
                    String lineText = null;
                    while ((lineText = r.readLine()) != null) {
                        w.write(lineText);
                        w.newLine();
                    }
                    w.close();
                    r.close();
                } else {
                    readerFile(child[i]);
                }
            }
        }
    }

}