将目录下的所有文件从GBK转换成UTF-8

package com.xiangshauii;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.nio.charset.Charset;

public class GBKToUTF8 {
//要转换的目录--目标资源URL
    public final static String targetFileUrl="F:/gq";
   //遍历目录，将文件从GBK转换成UTF-8
public static void fileList(File file) {
File rootFile = file;
File[] files = rootFile.listFiles();
if (files != null) {
for (File f:files) {
if (!f.isDirectory()) {
codeConvert(f);
}
System.out.println(f.getPath());
fileList(f);//递归调用子文件夹下的文件
       }
  }
}

public static void main(String[] args){
File file = new File(targetFileUrl);
GBKToUTF8.fileList(file);
}
public static void  codeConvert(File file) {
try{
BufferedReader br = new BufferedReader(new InputStreamReader
(new FileInputStream(file), Charset.forName("GBK")));
StringBuilder sb = new StringBuilder();
String str;
while ((str = br.readLine())!= null) {
sb.append(str);
sb.append("\n");
}
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file),Charset.forName("UTF-8")));
bw.write(sb.toString());
bw.flush();
bw.close();
//br.close();
}catch (Exception e){
   e.printStackTrace();
}
}

}