用java将GBK工程转为uft8的方法实例

public class TransferProject{  public static void transferFile(String pathName,intdepth)throwsException{    File dirFile = new File(pathName);    if (!isValidFile(dirFile)) return;    //获取此目录下的所有文件名与目录名    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();      //如果是一个目录，搜索深度depth++，输出目录名后，进行递归      if (file.isDirectory()) {        //递归        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();  }}