我使用TCPDF类来生成PDF。首先，我送JSON格式（jQuery的）一些数据，然后我想生成PDF文件使用这些数据。

I'm using TCPDF class to generate PDF. First I send some data in json format (jquery) then I would like to generate PDF with these data.

你能告诉我，如果我是正确的。我要生成PDF，将其保存在服务器上，那么如果Ajax调用返回成功，将用户重定向到这个PDF格式。是个好办法吗？

Could you tell me if I am right. I should generate pdf, save it on the server and then if ajax call returns success, redirect the user to this pdf. Is a good way?

我有：

$.ajax({
    url: '/pdf/fiele_to_generate_pdf.php',
    type: 'POST',
    contentType: "application/json; charset=utf-8",
    data: $.toJSON(jsonObj),
    processData: false,
    dataType: 'html',    
    async: false,
    success: function(html) {
        window.location.href = '/pdf/example.pdf';      
    }
});

感谢您的任何建议。

Thanks for any advice.

编辑：所以，我已经发出了请求，通过Ajax使PDF到服务器，然后将PDF文件生成并保存在服务器上。然后，我已经使用window.location.href将用户重定向到这个PDF格式。一切正常，但我想，以避免保存在服务器上的文件。任何想法？

So I have sent a request to make the pdf via Ajax to the server, then the pdf file was generated and saved on the server. Then I have used window.location.href to redirect the user to this pdf. Everything works but I would like to avoid saving file on the server. Any ideas?

推荐答案

确定该脚本将保存文件，并显示在浏览器中

Ok this script will save the file and also display in the browser

诀窍是使用oput用'F'或'我'：

the trick is in using oput with the 'F' or 'I':

$pdf->Output("your path", 'F');  //save pdf
$pdf->Output('file.pdf', 'I'); // show pdf

code

<?php
class PDF extends TCPDF {
    public function Header (){                       
         $this->SetFont('dejavusans', '', 14);
         $title = utf8_encode('title');
         $subtitle = utf8_encode('sub title');
         $this->SetHeaderMargin(40);            
         $this->Line(15,23,405,23);      
    }

    public function Footer() {
        $this->SetFont('dejavusans', '', 8);
        $this-> Cell (0, 5, 'Pag '.$this->getAliasNumPage().'/'.$this->getAliasNbPages(), 0, false, 'R', 0, '', 0, false, 'T', 'M');
    }   

    public static function makeHTML ($json){
        $html = '<table border="0.5" cellspacing="0" cellpadding="4">
        <tr>
            <th bgcolor="#DAB926" style="width:3%; text-align:left"><strong>you th</strong></th>      
        </tr>';
        for ($i=0; $i<count($json); $i++)
        {
            $a= $i+1; 
            $html .= '<tr>
                        <td style="width:15%; text-align:left">'.$json[$i]->Name.'</td>
                      </tr>';
        }   
        $html .= '</table>';
        return $html;           
    }   
}

function printReport ($json )
{
    set_time_limit(0);

    $pdf = new PDF("L", PDF_UNIT, "A3",true, 'UTF-8', false);

    $pdf->SetMargins (15, 27, 15, true);
    $pdf->SetFont('dejavusans', '', 8);
    $pdf->SetAutoPageBreak(TRUE,50);
    $pdf->AddPage();

    //create html
    $html = $pdf->makeHTML($json);  


    $pdf->writeHTML($html, false, false, false, false, '');

    if (!file_exists("your path"))
        mkdir("your path");

    $pdf->Output("your path", 'F');  //save pdf
    $pdf->Output('file.pdf', 'I'); // show pdf

    return true;
}

$json = json_decode("your json");
printReport($json);
?>