codeigniter中的tcpdf不起作用

Question

I use tcpdf to generate data into pdf but I got no result and no error.

JS

obj.fnExportpdf = () => {
    return app.callModel('romans/pdfTest'
    // onerror
    , function (jqXHR, status, errorMessage){
            alert ('ERROR: '+errorMessage);
            return false;
    }
    // onsuccess
    , function (response, status, jqXHR){
            return ;
    }
    // hide progressbar
    , false
    );  
}

Model

 function pdfTest(){
    $this->load->library("Pdf");
    $pdf = new Pdf('P', 'mm', 'A4', true, 'UTF-8', false);
    $pdf->SetCreator(PDF_CREATOR);
    // Add a page
    $pdf->AddPage();
    $html = "<h1>Test Page</h1>";
    $pdf->writeHTML($html, true, false, true, false, '');
    ob_clean();
    return $pdf->Output('samplepdf.pdf','I');

}

but when I click pdftest it shows the result. click image

Answer 1

Download TCPD from here

Create a new file: /application/libraries/Pdf.php:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

require_once dirname(__FILE__) . '/tcpdf/tcpdf.php';

class Pdf extends TCPDF
{
    function __construct()
    {
        parent::__construct();
    }
}

/* End of file Pdf.php */
/* Location: ./application/libraries/Pdf.php */

To create a new PDF you would do something like this in your controller:

$this->load->library('Pdf');

$pdf = new Pdf('P', 'mm', 'A4', true, 'UTF-8', false);
$pdf->SetTitle('My Title');
$pdf->SetHeaderMargin(30);
$pdf->SetTopMargin(20);
$pdf->setFooterMargin(20);
$pdf->SetAutoPageBreak(true);
$pdf->SetAuthor('Author');
$pdf->SetDisplayMode('real', 'default');

$pdf->AddPage();

$pdf->Write(5, 'Some sample text');
$pdf->Output('My-File-Name.pdf', 'I');