Question

POI导出Excel时，最后的HSSFWorkbook的write执行后没有反应是为什么？

附上代码：
String agent = request.getHeader("USER-AGENT");

filename += ".xls";

filename.replaceAll("/", "-");
// filename = new String(filename.getBytes("gbk"),"ISO8859_1");

if (agent.toLowerCase().indexOf("firefox")>0)
{
filename = new String(filename.getBytes("utf-8"), "iso-8859-1");
}else{
filename = URLEncoder.encode(filename, "UTF-8");
}

response.reset();
response.setCharacterEncoding("UTF-8");
response.setHeader("Content-Disposition", "attachment; filename=" + filename);
response.setContentType("application/octet-stream;charset=UTF-8");
OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
wb.write(outputStream);
outputStream.flush();
outputStream.close();

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Answer 1

输入代码：

$pngname = $openid.'.png';
if(imagepng($QR, $pngname)){
imagedestroy($QR);
$qrurl = W_DOMAIN.''.$pngname;
$this->assign('qrcode',$qrurl);
$this->display();
}

Answer 2

$pngname = $openid.'.png';
if(imagepng($QR, $pngname)){
imagedestroy($QR);
$qrurl = W_DOMAIN.''.$pngname;
$this->assign('qrcode',$qrurl);
$this->display();

Answer 3

$pngname = $openid.'.png';
if(imagepng($QR, $pngname)){
imagedestroy($QR);
$qrurl = W_DOMAIN.''.$pngname;
$this->assign('qrcode',$qrurl);
$this->display();
}

Answer 4

$pngname = $openid.'.png';
if(imagepng($QR, $pngname)){
imagedestroy($QR);
$qrurl = W_DOMAIN.''.$pngname;
$this->assign('qrcode',$qrurl);
$this->display();
}