文件转换UTF-8格式

public static void main(String[] args) throws Exception{
    File file = new File("D:\\test\\NetSDK");//文件目录
    File[] files = file.listFiles();//获取文件目录下所有文件包括文件路劲
    for (int i = 0; i < files.length; i++) {
        String[] split = files[i].getName().split("\\\\");//将路劲转成String数组
        FileInputStream fis = new FileInputStream(files[i]);//获取文件流
        InputStreamReader isr = new InputStreamReader(fis, "GB2312");//包装了流
        BufferedReader br = new BufferedReader(isr);//

        FileOutputStream output = new FileOutputStream("D:\\test\\save" + File.separator +split[split.length-1]);
        OutputStreamWriter osw = new OutputStreamWriter(output, "UTF-8");
        BufferedWriter writer = new BufferedWriter(osw);
        String line = null;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
            writer.write(line);
            writer.write("\r\n");
        }
        writer.flush();
        writer.close();
        br.close();

    }
}