import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;public class Main {     public static void main(String[] args) {        File f1 = new File("E:\\myeclipse\\MySpace\\EducationalAdministrationSystem\\src\\com\\entity");//需要转码的GBK格式文件夹        File f2 = new File("E:\\myeclipse\\MySpace1");//转码成UTF-8的目标文件夹        try {            new Main().copyFile(f1, f2);        } catch (IOException e) {            e.printStackTrace();        }    }         private void copyFile(File f1, File f2) throws FileNotFoundException, IOException {        if(f1.isDirectory()) {            f2.mkdir();            File[] fs = f1 .listFiles();            for (File subF : fs) {                //递归遍历目录                copyFile(subF, new File(f2, subF.getName()));            }        } else if (f1.isFile() && f1.getName().endsWith(".java")) {            //对java文件进行转码            parse2UTF_8(f1, f2);        } else {            //对非java文件直接复制            copyData(f1, f2);        }    }         //复制文件    private void copyData(File f1, File f2) throws FileNotFoundException, IOException{                 FileInputStream fis = new FileInputStream(f1);        FileOutputStream fos = new FileOutputStream(f2, false);                 byte[] bytes = new byte[1024];        int temp = 0;        while (-1 != (temp = fis.read(bytes))) {            fos.write(bytes, 0, temp);        }                 fos.flush();                 if(null != fis) {            fis.close();        }        if(null != fos) {            fos.close();        }    }         /*     * 该方法引用 杰克思勒(Jacksile)的文章：Eclipse修改编码后乱码解决     *  之后作了小修改     * 原码地址 https://www.cnblogs.com/tufujie/p/5137564.html     */    private void parse2UTF_8(File file, File destFile) throws IOException {        StringBuffer msg = new StringBuffer();        // 读写对象        PrintWriter ps = new PrintWriter(new OutputStreamWriter(new FileOutputStream(destFile.getAbsolutePath(), false), "utf8"));        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file.getAbsolutePath()), "gbk"));         // 读写动作        String line = br.readLine();        while (line != null) {            msg.append(line).append("\r\n");            line = br.readLine();        }        ps.write(msg.toString());        br.close();        ps.flush();        ps.close();    }}

引用转载别人的代码，并非本人创作