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最新推荐文章于 2025-08-10 19:10:22 发布

原创最新推荐文章于 2025-08-10 19:10:22 发布 · 491 阅读

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本文介绍了一种使用Java实现二维码生成及解析的方法。通过MultiFormatWriter生成二维码，并利用MultiFormatReader进行解析。同时展示了如何在JSP页面上展示动态生成的二维码。

在慕课网上学习一些有关于JAVA部分的二维码生成小程序，由JSP显示，由JAVA代码生成相应的二维码：

部分JAVA代码：

public static void main(String[] args) {
int width = 300;
int height = 300;
String format = "png";
String content = "https://www.baidu.com";

//定义二维码的参数
HashMap hints = new HashMap();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
hints.put(EncodeHintType.MARGIN, 2);

//生成二维码
try {
BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);

Path file = new File("E:/eclipse/projeck/2DCode/2DCode.png").toPath();

MatrixToImageWriter.writeToPath(bitMatrix, format, file);
} catch (Exception e) {
e.printStackTrace();
}
}

//解析二维码

public static void main(String[] args){

try {
MultiFormatReader formatReader = new MultiFormatReader();

File file = new File("E:/eclipse/projeck/2DCode/2DCode.png");

BufferedImage image = ImageIO.read(file);

BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));

//定义二维码的参数
HashMap hints = new HashMap();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");

Result result = formatReader.decode(binaryBitmap, hints);

System.out.println("解析结果：" + result.toString());
System.out.println("2DCode格式类型：" + result.getBarcodeFormat());
System.out.println("2DCode文本内容：" + result.getText());
} catch (NotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

部分JSP代码：

<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>生成二维码</title>
<script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery.qrcode.min.js"></script>
</head>
<body>
<h1>生成二维码如下：<br /></h1>
<div id="qrcode"></div>
<script type="text/javascript">
jQuery('#qrcode').qrcode("http://wx.nsi-soft.com:5906/sso/main.do?requestUrl=http%3A%2F%2Fwx.nsi-soft.com%3A5906%2FnsiOOC%2F%3Bjsessionid%3DF26949EA325B818E435565A86C7476FB");
</script>
</body>
</html>