添加maven依赖
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.0.0</version>
</dependency>
代码实现
@GetMapping("/test")
public void test(HttpServletResponse response){
int BLACK = 0xFF000000;
int WHITE = 0xFFFFFFFF;
String text = "https://www.baidu.com/"; //这里是URL ，扫描之后就跳转到这个界面
int width = 900;
int height = 900;
// 二维码图片格式
String format = "gif";
// 设置编码，防止中文乱码
Hashtable<EncodeHintType, Object> ht = new Hashtable<>();
ht.put (EncodeHintType.CHARACTER_SET, "UTF-8");
// 设置二维码参数(编码内容，编码类型，图片宽度，图片高度,格式)
try {
BitMatrix bitMatrix = new MultiFormatWriter().encode (text, BarcodeFormat.QR_CODE, width, height, ht);
// 生成二维码(定义二维码输出服务器路径)
int b_width = bitMatrix.getWidth ();
int b_height = bitMatrix.getHeight ();
// 建立图像缓冲器
BufferedImage image = new BufferedImage (b_width, b_height, BufferedImage.TYPE_3BYTE_BGR);
for ( int x = 0; x < b_width; x++ )
{
for ( int y = 0; y < b_height; y++ )
{
image.setRGB (x, y, bitMatrix.get (x, y) ? BLACK : WHITE);
}
}
ImageIO.write(image,format,response.getOutputStream());
}catch (Exception e){
System.out.println(e.getMessage());
}
}
写完后get请求，界面就可以看到二维码，然后用微信扫一扫即可看到跳转
转播
