文件编码转换（GBK转UTF-8）

Posted 2023-02-18

public class FileReEncoding 

    String file1 = "E:\\\\java-fx";

    String code1 = "GBK";

    String file2 = "E:\\\\java-fx-2";

    String code2 = "UTF-8";

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

        FileReEncoding code = new FileReEncoding();
        code.processFile(new File(code.file1));
    

    public void processFile(File fileIn) throws IOException 
        if (fileIn != null) 
            if (fileIn.isDirectory()) 
                String newDir = fileIn.getCanonicalPath().replace(file1, file2);
                File dir = new File(newDir);
                if (!dir.exists()) 
                    dir.mkdir();
                
                for (File childFile : fileIn.listFiles()) 
                    processFile(childFile);
                
             else if (fileIn.getName().endsWith(".java")) 
                String filePath = fileIn.getCanonicalPath();
                BufferedReader br = new BufferedReader(new InputStreamReader(Files.newInputStream(fileIn.toPath()), code1));
                String newFile = filePath.replace(file1, file2);
                BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(Files.newOutputStream(Paths.get(newFile)), code2));
                String line;
                while ((line = br.readLine()) != null) 
                    bw.write(line + "\\r\\n");
                
                br.close();
                bw.close();
             else 
                FileInputStream fis = new FileInputStream(fileIn);
                FileOutputStream fos = new FileOutputStream(fileIn.getCanonicalPath().replace(file1, file2));
                byte[] buffer = new byte[1024];
                int len;
                while ((len = fis.read(buffer)) != -1) 
                    fos.write(buffer, 0, len);
                
                fis.close();
                fos.close();