我在服务器上安装了tcpdf。我已检查文件是否存在。在javascript函数中,我通过ajax调用print.php。
onclick = "savepdf();"
javascript功能(在启动ajax之后)是:
function savepdf(){
var html = 'This is a test page.';
var parameters = "content="+html;
ajaxRequest.open("POST", 'print.php', true);
ajaxRequest.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
ajaxRequest.onreadystatechange = function(){
if(ajaxRequest.readyState == 4){
alert('Success');
}
};
ajaxRequest.send(parameters);
}
这是print.php,我从它的库存示例中复制了它。
<?php
header("Content-Type: application/octet-stream");
require_once('/tcpdf/tcpdf.php');
$text = $_POST['content'];
$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor('SOMEONE');
$pdf->SetTitle('Report');
$pdf->SetSubject('Report');
$pdf->setPrintHeader(false);
$pdf->setPrintFooter(false);
$pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);
$pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
$pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);
$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
$pdf->setFontSubsetting(true);
$pdf->SetFont('dejavusans', '', 10, '', true);
$pdf->AddPage();
$html = $text;
$pdf->writeHTML($html, true, false, true, false, '');
$pdf->Output($_SERVER['DOCUMENT_ROOT'] . '/temp/output.pdf', 'F');
$file = $_SERVER['DOCUMENT_ROOT'] . '/temp/output.pdf';
header('Content-Disposition: attachment; filename="'.$file.'"');
header('Content-Length: ' . filesize($file));
header("Cache-control: private"); //use this to open files directly
readfile($file);
?>
文件已物理保存在服务器上,但无法下载。我该如何排除故障?
答案 0 :(得分:0)
您无法强制用户通过AJAX请求下载文件。您需要将浏览器重定向到生成的文件(如果不是私有的),或者重定向到将输出它的php脚本。请参阅此处的讨论: https://stackoverflow.com/a/9970672/1800369