下载文件乱码问题

原来一直使用的是PrintWriter out = response.getWriter();的方式，现在出现乱码。用以下方式可以解决。

 

BufferedInputStream in =new java.io.BufferedInputStream(new java.io.FileInputStream(fileUrl));

BufferedOutputStream out=new java.io.BufferedOutputStream(response.getOutputStream()); 

byte[] buff = new byte[2048];

int bytesRead;

response.setContentType("application/octet-stream;charset=gbk");

response.setHeader("Content-Disposition","attachment;filename = "+fileName); 

while (-1 != (bytesRead = in.read(buff, 0, buff.length))) {

out.write(buff, 0, bytesRead);

}

in.close();

out.close();