public class image {	private static final int BLACK = 0xFF000000;    private static final int WHITE = 0xFFFFFFFF;     public static void main ( String[] args ) throws Exception    {        String text = "http://47.104.160.160:8089/"; //这里是URL ，扫描之后就跳转到这个界面        String path = "D:/"; //图片生成的位置        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
    
      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)                 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)        File outputFile = new File (path);        if (!outputFile.exists ())        {            //创建文件夹            outputFile.mkdir ();        }        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);            }        }        // 生成二维码        ImageIO.write (image, format, new File (path + "/img1." + format)); //二维码的名称 是 erweima.sgif                               }}复制代码