PHPlaravel实现导出PDF功能

        require_once("../app/Extend/tcpdf/tcpdf.PHP");
$pdf = new TCPDF();
        // 设置文档信息
        $pdf->SetCreator('懒人开发网');
        $pdf->SetAuthor('懒人开发网');
        $pdf->SetTitle('TCPDF示例');
        $pdf->SetSubject('TCPDF示例');
        $pdf->SeTKEyWords('TCPDF, PDF, php');
 
        // 设置页眉和页脚信息
        $pdf->SetHeaderData('tcpdf_loGo.jpg', 30, 'LanRenKaiFA.com', '学会偷懒，并懒出效率！', [0, 64, 255], [0, 64, 128]);
        $pdf->setFooterData([0, 64, 0], [0, 64, 128]);
 
        // 设置页眉和页脚字体
        $pdf->setHeaderFont(['stsongstdlight', '', '10']);
        $pdf->setFooterFont(['helvetica', '', '8']);
 
        // 设置默认等宽字体
        $pdf->SetDefaultMonospacedFont('courier');
 
        // 设置间距
        $pdf->SetMargins(15, 15, 15);//页面间隔
        $pdf->SetHeaderMargin(5);//页眉top间隔
        $pdf->SetFooterMargin(10);//页脚bottom间隔
 
        // 设置分页
        $pdf->SetAutoPageBreak(true, 25);
 
        // set default font subsetting mode
        $pdf->setFontSubsetting(true);
 
        //设置字体 stsongstdlight支持中文
        $pdf->SetFont('stsongstdlight', '', 14);
 
        //第一页
        $pdf->AddPage();
        $pdf->writehtml('<div style="text-align: center"><h1>第一页内容</h1></div>');
        $pdf->writeHTML('<p>我是第一行内容</p>');
        $pdf->writeHTML('<p style="color: red">我是第二行内容</p>');
        $pdf->writeHTML('<p>我是第三行内容</p>');
        $pdf->Ln(5);//换行符
        $pdf->writeHTML('<p><a href="http://www.lanrenkaifa.com/" rel="external nofollow"  title="">懒人开发网</a></p>');
 
        //第二页
        $pdf->AddPage();
        $pdf->writeHTML('<h1>第二页内容</h1>');
 
        //输出PDF
        $pdf->Output('t.pdf', 'I');//I输出、D下载

if ($dest[0] != 'F') {
    $name = preg_replace('/[s]+/', '_', $name);
    $name = preg_replace('/[^a-zA-Z0-9_.-]/', '', $name);
}

header('Content-Disposition: attachment; filename="'.basename($name).'"');

header('Content-Disposition: attachment; filename="'.$name.'"');

"autoload": {
        "psr-4": {
            "App\\": "app/"
        },
        "claSSMap": [
            "database/seeds",
            "database/factories",
            "app/Extend/PHPMailer/src"
        ]
    },

use PHPMailer\src\PHPMailer;

 //实例化PHPMailer核心类
$mail = new PHPMailer();