使用Zxing打造带有数字的二维码

package com.x.ExportExcel;import java.awt.Color;import java.awt.Font;import java.awt.Graphics2D;import java.awt.RenderingHints;import java.awt.image.BufferedImage;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Hashtable;import javax.imageio.ImageIO;import org.apache.poi.xssf.usermodel.XSSFClientAnchor;import org.apache.poi.xssf.usermodel.XSSFDrawing;import org.apache.poi.xssf.usermodel.XSSFSheet;import org.apache.poi.xssf.usermodel.XSSFWorkbook;import com.google.zxing.BarcodeFormat;import com.google.zxing.EncodeHintType;import com.google.zxing.MultiFormatWriter;import com.google.zxing.client.j2se.MatrixToImageWriter;import com.google.zxing.common.BitMatrix;public class Code_128Utils {    private static final int WIDTH = 351;    private static final int CODEHEIGHT = 55;    private static final int HEIGHT = 78;    private static final int FONTSIZE = 25;    private static final String IMAGETYPE = "JPEG";        //该方法用来生成所需二维码  不带数字    public static void createCode(String no) throws Exception {        FileOutputStream fos;        fos = new FileOutputStream(new File("E:\\code\\" + no + ".jpg"));        int width = WIDTH;        int height = CODEHEIGHT;        Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");        BitMatrix m = new MultiFormatWriter().encode(no,                BarcodeFormat.CODE_128, width, height, hints);        MatrixToImageWriter.writeToStream(m, IMAGETYPE, fos);        fos.flush();        fos.close();        createFont(no);    }            ///该方法用来生成二维码字体并且把二维码拼接到字体图片上    public static void createFont(String no) throws Exception {        BufferedImage font = new BufferedImage(WIDTH, HEIGHT,                BufferedImage.TYPE_INT_RGB);        BufferedImage code = ImageIO.read(new File("E:\\code\\" + no + ".jpg"));        Graphics2D g = (Graphics2D) font.getGraphics();        //长宽是总的 字体加二维码的        g.clearRect(0, 0, WIDTH, HEIGHT);        g.setColor(Color.WHITE);        g.fillRect(0, 0, WIDTH, HEIGHT);        //字体渲染        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,                RenderingHints.VALUE_ANTIALIAS_ON);        g.setRenderingHint(RenderingHints.KEY_RENDERING,                RenderingHints.VALUE_RENDER_QUALITY);                //在图片上把字写好        for (int i = 0; i < no.length(); i++) {            g.setColor(Color.black);            Font font_ = new Font("Consolas", 0, FONTSIZE);            g.setFont(font_);            g.drawString(no.charAt(i) + "", (FONTSIZE * 2 + WIDTH - no.length()                    * FONTSIZE)                    / 2 + (i - 1) * FONTSIZE, CODEHEIGHT + HEIGHT - CODEHEIGHT);        }        //然后把二维码加上去         g.drawImage(code, 0, 0, null);        g.dispose();        //进行图片处理,防止出现模糊        int[] rgb = new int[3];        for (int i = 0; i < WIDTH; i++) {            for (int j = CODEHEIGHT; j < HEIGHT; j++) {                int pixel = font.getRGB(i, j);                rgb[0] = (pixel & 0xff0000) >> 16;                rgb[1] = (pixel & 0xff00) >> 8;                rgb[2] = (pixel & 0xff);                if (rgb[0] > 125 || rgb[1] > 125 || rgb[2] > 125) {                    font.setRGB(i, j, -1);                }                if (rgb[0] < 100 || rgb[1] < 100 || rgb[2] < 100) {                    font.setRGB(i, j, -16777216);                }            }        }        File outputfile = new File("E:\\code\\" + no + ".jpg");        ImageIO.write(font, IMAGETYPE, outputfile);    }}