thinkphp5+barcode生成条形码

setScale(2); // Resolution
            $code->setThickness(30); // Thickness
            $code->setForegroundColor($color_black); // Color of bars
            $code->setBackgroundColor($color_white); // Color of spaces
            $code->setFont($font); // Font (or 0)  0不显示文字
　　　　　    $text = isset($_GET["text"]) ? $_GET["text"] : "HELLO";
            $code->parse($text); // Text
        } catch(Exception $exception) {
            $drawException = $exception;
        }

        /* Here is the list of the arguments
- Filename (empty : display on screen)
- Background color */
        $drawing = new BCGDrawing("", $color_white);
        if($drawException) {
            $drawing->drawException($drawException);
        } else {
            $drawing->setBarcode($code);
            $drawing->draw();
        }

        // Header that says it is an image (remove it if you save the barcode to a file)
        header("Content-Type: image/png");
        header("Content-Disposition: inline; filename="barcode.png"");

        // Draw (or save) the image into PNG format.
        $drawing->finish(BCGDrawing::IMG_FORMAT_PNG);

    }

    public function barcodedes()
    {
        return $this->fetch();
    }
}
?>

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$text = isset($_GET["text"]) ? $_GET["text"] : "HELLO";

$text = input("text");      //接收的参数

// 文件路径
        $file_dir = "uploads/barcode/".date("Y-m-d");
        if (!file_exists($file_dir)) {
            mkdir($file_dir,0755,true);
        }
        $imgUrl = $file_dir."/".time().".png";
        $class_dir = VENDOR_PATH."barcode/class/";
        // Including all required classes
        require_once($class_dir."BCGFontFile.php");
        require_once($class_dir."BCGColor.php");
        require_once($class_dir."BCGDrawing.php");
        require_once($class_dir."BCGcode39.barcode.php");
        // Loading Font
        // 注意font和class是同一级文件夹
        $fOnt= new BCGFontFile(VENDOR_PATH."barcode/font/Arial.ttf", 18);

        // Don"t forget to sanitize user inputs
        // $text = isset($_GET["text"]) ? $_GET["text"] : "HELLO";
        // The arguments are R, G, B for color.
        $color_black = new BCGColor(0, 0, 0);
        $color_white = new BCGColor(255, 255, 255);

        $drawException = null;
        try {
            $code = new BCGcode39();
            $code->setScale(2); // Resolution
            $code->setThickness(30); // Thickness
            $code->setForegroundColor($color_black); // Color of bars
            $code->setBackgroundColor($color_white); // Color of spaces
            $code->setFont($font); // Font (or 0)
            $text = input("text");      //接收的参数
            $text = isset($text) ? $text :"无参数";      
            $code->parse($text); // Text
        } catch(Exception $exception) {
            $drawException = $exception;
        }

        /* Here is the list of the arguments
- Filename (empty : display on screen)
- Background color */
        // 保存到本地 （路径，颜色）路径为空则表示显示到页面上
        $drawing = new BCGDrawing($imgUrl, $color_white);
        if($drawException) {
            $drawing->drawException($drawException);
        } else {
            $drawing->setBarcode($code);
            $drawing->draw();
        }
        $drawing->finish(BCGDrawing::IMG_FORMAT_PNG);