InputStreamReader ir = new InputStreamReader(new FileInputStream("c:/text_utf8.txt"), "UTF-8");
OutputStreamWriter ow = new OutputStreamWriter(new FileOutputStream("c:/text_gbk.txt"),"GBK");
InputStreamReader ir = new InputStreamReader(new FileInputStream("c:/text_utf8.txt"), "UTF-8");
OutputStreamWriter ow = new OutputStreamWriter(new FileOutputStream("c:/text_gbk.txt"),"GBK");