使用zxing批量在做好的立牌背景图的指定位置上，把指定的文本内容（链接地址、文本等）生成二维码并放在该位置，最后加上立牌编号。
步骤：
1).做好背景图，如下图：
2).生成二维码BufferedImage对象。代码如下：
public static BufferedImage toBufferedImage(String text, int width,
int height) throws Exception {
int BLACK = 0xFF000000;
int WHITE = 0xFFFFFFFF;
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); // 内容所使用字符集编码
hints.put(EncodeHintType.MARGIN, 1);
BitMatrix matrix = new MultiFormatWriter().encode(text,
BarcodeFormat.QR_CODE, width, height, hints);
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
}
}
return image;
}
3).在立牌背景图的指定位置上生成二维码,代码如下：
public static void markImageByCode(Image img, String srcImgPath,
String targerPath, int positionWidth, int positionHeight) {
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));
BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),
srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
// 1、得到画笔对象
Graphics2D g = buffImg.createGraphics();
// 2、设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(
srcImg.getScaledInstance(srcImg.getWidth(null),
srcImg.getHeight(null), Image.SCALE_SMOOTH), 0, 0,
null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 3、二维码位置
g.drawImage(img, positionWidth, positionHeight, null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
// 4、释放资源
g.dispose();
// 5、生成图片（建议生成PNG的，jpg会失真）
os = new FileOutputStream(targerPath);
ImageIO.write(buffImg, "PNG", os);
System.out.println("二维码图片生成成功");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
4).在立牌上加上立牌编号
public final static void pressText(String pressText, String srcImageFile,
String destImageFile, int x, int y, float alpha) {
try {
File img = new File(srcImageFile);
Image src = ImageIO.read(img);
int width = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
// 开文字抗锯齿 去文字毛刺
g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g.drawImage(src, 0, 0, width, height, null);
// 设置颜色
g.setColor(new Color(89, 87, 87));
// 设置 Font
g.setFont(new Font("方正兰亭中黑_GBK", Font.BOLD, 14));
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y) .
g.drawString(pressText, x, y);
g.dispose();
ImageIO.write((BufferedImage) image, "PNG", new File(destImageFile));// 输出到文件流
} catch (Exception e) {
e.printStackTrace();
}
}
示例：
代码：
测试代码
public class codeTest {
public static void main(String[] args) throws Exception {
String text = "http://www.xxx.com/"; // 二维码内容
// 生成二维码
//生成图片二维码存放目录
String targetPath = "f:/qrcode/targetimg/" + Utils.toStr();
//创建目录
Utils.makeDirs(targetPath);
int begin = 100;//code 开始数字
int end = 101;//code结束数字
for (int i = begin; i <= end; i++) {
//生成含日期的16位数字如20161214000001
String code = Utils.toStr() + Utils.formateNumber(i);
//获取二维码对象
BufferedImage image = Utils.toBufferedImage(text
+ "?payCode=" + code,240,240);
//生成含背景图+二维码的立牌的图
Utils.markImageByCode(image, "f:/qrcode/srcimg/src.png",
targetPath + "/" + code + ".png", 340, 160);
//立牌的图加上code编号
Utils.pressText(code, targetPath + "/" + code + ".png", targetPath
+ "/" + code + ".png", 390, 417, 0.5f);
}
// 生成二维码
}
}
效果：
批量生成的图片效果图如下
批量图：
utils代码：
package cn.utils.code;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Hashtable;
import javax.imageio.ImageIO;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
public abstract class Utils {
public static String DF_DATETIME = "yyyyMMdd";
private static float alpha = 1f;
public static BufferedImage toBufferedImage(String text, int width,
int height) throws Exception {
int BLACK = 0xFF000000;
int WHITE = 0xFFFFFFFF;
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); // 内容所使用字符集编码
hints.put(EncodeHintType.MARGIN, 1);
BitMatrix matrix = new MultiFormatWriter().encode(text,
BarcodeFormat.QR_CODE, width, height, hints);
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
}
}
return image;
}
public static void markImageByCode(Image img, String srcImgPath,
String targerPath, int positionWidth, int positionHeight) {
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));
BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),
srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
// 1、得到画笔对象
Graphics2D g = buffImg.createGraphics();
// 2、设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(
srcImg.getScaledInstance(srcImg.getWidth(null),
srcImg.getHeight(null), Image.SCALE_SMOOTH), 0, 0,
null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 3、二维码位置
g.drawImage(img, positionWidth, positionHeight, null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
// 4、释放资源
g.dispose();
// 5、生成图片（建议生成PNG的，jpg会失真）
os = new FileOutputStream(targerPath);
ImageIO.write(buffImg, "PNG", os);
System.out.println("二维码图片生成成功");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
public final static void pressText(String pressText, String srcImageFile,
String destImageFile, int x, int y, float alpha) {
try {
File img = new File(srcImageFile);
Image src = ImageIO.read(img);
int width = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
// 开文字抗锯齿 去文字毛刺
g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g.drawImage(src, 0, 0, width, height, null);
// 设置颜色
g.setColor(new Color(89, 87, 87));
// 设置 Font
g.setFont(new Font("方正兰亭中黑_GBK", Font.BOLD, 14));
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y) .
g.drawString(pressText, x, y);
g.dispose();
ImageIO.write((BufferedImage) image, "PNG", new File(destImageFile));// 输出到文件流
} catch (Exception e) {
e.printStackTrace();
}
}
// 日期转字符串
public static String toStr() {
return toStr(DF_DATETIME);
}
public static String toStr(String format) {
return toStr(format, new Date());
}
public static String toStr(Date date) {
return toStr(DF_DATETIME, date);
}
public static String toStr(String format, Date date) {
return new SimpleDateFormat(format).format(date);
}
public static String formateNumber(int num) {
DecimalFormat df = new DecimalFormat("000000");
String str2 = df.format(num);
return str2;
}
public static boolean makeDirs(String filePath) {
File folder = new File(filePath);
return (folder.exists() && folder.isDirectory()) ? true : folder
.mkdirs();
}
}
使用的技术：
1.使用的zxing生成二维码工具。
1)下载地址：http://repo1.maven.org/maven2/com/google/zxing/javase/3.1.0/
2).maven配置
com.google.zxing core2.2
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。
