BufferedReader读取GBK文件中文乱码

原文：http://blog.csdn.net/maxracer/article/details/5436580

读取txt文件乱码：
BufferedReader read = new BufferedReader(new FileReader(new File(filename)));

解决办法：
InputStreamReader isr = new InputStreamReader(new FileInputStream(file), "GBK");
BufferedReader read = new BufferedReader(isr);