public class TransferProject{
  public static void transferFile(String pathName,intdepth)throwsException{
    File dirFile = new File(pathName);
    if (!isValidFile(dirFile)) return;
    //獲取此目錄下的所有文件名與目錄名
    String[] fileList = dirFile.list();
    int currentDepth = depth + 1;
    for (int i = 0; i < fileList.length; i++) {
      String string = fileList[i];
      File file = new File(dirFile.getPath(), string);
      String name = file.getName();
      //如果是一個(gè)目錄，搜索深度depth++，輸出目錄名后，進(jìn)行遞歸
      if (file.isDirectory()) {
        //遞歸
        transferFile(file.getCanonicalPath(), currentDepth);
      } else {
        if (name.contains(".java") || name.contains(".properties") || name.contains(".xml")) {
          readAndWrite(file);
          System.out.println(name + " has converted to utf8 ");
        }
      }
    }
  }

 
  private static boolean isValidFile(File dirFile)throwsIOException{
    if (dirFile.exists()) {
      System.out.println("file exist");
      return true;
    }
    if (dirFile.isDirectory()) {
      if (dirFile.isFile()) {
        System.out.println(dirFile.getCanonicalFile());
      }
      return true;
    }
    return false;
  }

  private static void readAndWrite(File file)throwsException{
    String content = FileUtils.readFileByEncode(file.getPath(), "GBK");
    FileUtils.writeByBufferedReader(file.getPath(), new String(content.getBytes("UTF-8"), "UTF-8"));
  }

  public static void main(String[] args)throwsException{
    //程序入口，制定src的path
    String path = "/Users/mac/Downloads/unit06_jdbc/src";
    transferFile(path, 1);
  }
}

public class FileUtils{
  public static void writeByBufferedReader(String path, String content){
    try {
      File file = new File(path);
      file.delete();
      if (!file.exists()) {
        file.createNewFile();
      }

      FileWriter fw = new FileWriter(file, false);
      BufferedWriter bw = new BufferedWriter(fw);
      bw.write(content);
      bw.flush();
      bw.close();

    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  public staticStringreadFileByEncode(String path, String chatSet)throwsException{
    InputStream input = new FileInputStream(path);
    InputStreamReader in = new InputStreamReader(input, chatSet);
    BufferedReader reader = new BufferedReader(in);
    StringBuffer sb = new StringBuffer();
    String line = reader.readLine();
    while (line != null) {
      sb.append(line);
      sb.append("\r\n");
      line = reader.readLine();
    }
    return sb.toString();
  }
}