利用QRCode生成二维码

<!DOCTYPE html>
<html>
<head>
    <title>QRCode生成二维码</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no" />
    <script type="text/javascript" src="http://cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script>
    <script type="text/javascript" src="http://static.runoob.com/assets/qrcode/qrcode.min.js"></script>
</head>
<body>
<input id="text" type="hidden" value="http://localhost:8080/servlet/CargcInfoSvlt?state=syz_qrcode&param_djzbh=CQPF00003&param_fzrq=2009-08-05"/>
<div id="qrcode" style="width:200px; height:200px; margin-top:15px;"></div>
 
<script type="text/javascript">
    var qrcode = new QRCode(document.getElementById("qrcode"), {
        width : 200,
        height : 200
    });
 
    function makeCode () {
        var elText = document.getElementById("text");
        
        qrcode.makeCode(elText.value);
    }
 
    makeCode();
</script>
</body>
</html>

注意：当赋予二维码过长的URL时，会报错，此错误暂未找到解决方案，只能将URL后的参数修改。 

此二维码在IE8下打印无法打印出来，需要进行如下操作，右键 打印预览 ==》打印设置==》勾选打印背景颜色和图像，操作如下图：