java生成条形码
第一种：有缺点：在条形码下面不能加上汉字 转载：https://blog.csdn.net/qq_36410795/article/details/79052956 <!--条形码--> <dependency> <groupId>net.sf.barcode4j</groupId> <artifactId>barcode4j-light</artifactId> <version>2.0</version> </dependency>
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.krysalis.barcode4j.impl.code39.Code39Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.UnitConv;
import org.springframework.util.StringUtils;
/**
* 条形码工具类
*
* @author tangzz
* @createDate 2015年9月17日
*
*/
public class BarcodeUtil {
/**
* 生成文件
*
* @param msg
* @param path
* @return
*/
public static File generateFile(String msg, String path) {
File file = new File(path);
try {
generate(msg, new FileOutputStream(file));
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
}
return file;
}
/**
* 生成字节
*
* @param msg
* @return
*/
public static byte[] generate(String msg) {
ByteArrayOutputStream ous = new ByteArrayOutputStream();
generate(msg, ous);
return ous.toByteArray();
}
/**
* 生成到流
*
* @param msg
* @param ous
*/
public static void generate(String msg, OutputStream ous) {
if (StringUtils.isEmpty(msg) || ous == null) {
return;
}
Code39Bean bean = new Code39Bean();
// 精细度
final int dpi = 150;
// module宽度
final double moduleWidth = UnitConv.in2mm(1.0f / dpi);
// 配置对象
bean.setModuleWidth(moduleWidth);
bean.setWideFactor(3);
bean.doQuietZone(false);
String format = "image/png";
try {
// 输出到流
BitmapCanvasProvider canvas = new BitmapCanvasProvider(ous, format, dpi,
BufferedImage.TYPE_BYTE_BINARY, false, 0);
// 生成条形码
bean.generateBarcode(canvas, msg);
// 结束绘制
canvas.finish();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static void main(String[] args) {
String msg = "123456789";
// String path = "barcode.png";
String path = "G:/Image/barcode.png";
generateFile(msg, path);
System.out.println("条形码生成=="+generateFile(msg, path));
}
}
第二种：可以在条形码下方加上汉字：
https://blog.csdn.net/fxbin123/article/details/83515803
1、添加maven依赖
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.3.3</version>
</dependency>
package com.shengquan.holywater.modules.moju.utils;
import com.baomidou.mybatisplus.toolkit.StringUtils;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.oned.Code128Writer;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* @description: 谷歌条形码打印
* @author: Administrator
* @date: 2019-03-07 14:46
*/
public class GoogleBarCodeUtils {
/** 条形码宽度 */
private static final int WIDTH = 300;
/** 条形码高度 */
private static final int HEIGHT = 50;
/** 加文字 条形码 */
private static final int WORDHEIGHT = 75;
/**
* 设置 条形码参数
*/
private static Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>() {
private static final long serialVersionUID = 1L;
{
// 设置编码方式
put(EncodeHintType.CHARACTER_SET, "utf-8");
}
};
/**
* 生成 图片缓冲
* @author fxbin
* @param vaNumber VA 码
* @return 返回BufferedImage
*/
public static BufferedImage getBarCode(String vaNumber){
try {
Code128Writer writer = new Code128Writer();
// 编码内容, 编码类型, 宽度, 高度, 设置参数
BitMatrix bitMatrix = writer.encode(vaNumber, BarcodeFormat.CODE_128, WIDTH, HEIGHT, hints);
return MatrixToImageWriter.toBufferedImage(bitMatrix);
} catch (WriterException e) {
e.printStackTrace();
}
return null;
}
/**
* 把带logo的二维码下面加上文字
* @author fxbin
* @param image 条形码图片
* @param words 文字
* @return 返回BufferedImage
*/
public static BufferedImage insertWords(BufferedImage image, String words){
// 新的图片，把带logo的二维码下面加上文字
if (StringUtils.isNotEmpty(words)) {
BufferedImage outImage = new BufferedImage(WIDTH, WORDHEIGHT, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = outImage.createGraphics();
// 抗锯齿
setGraphics2D(g2d);
// 设置白色
setColorWhite(g2d);
// 画条形码到新的面板
g2d.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
// 画文字到新的面板
Color color=new Color(0, 0, 0);
g2d.setColor(color);
// 字体、字型、字号
g2d.setFont(new Font("微软雅黑", Font.PLAIN, 18));
//文字长度
int strWidth = g2d.getFontMetrics().stringWidth(words);
//总长度减去文字长度的一半 （居中显示）
int wordStartX=(WIDTH - strWidth) / 2;
//height + (outImage.getHeight() - height) / 2 + 12
int wordStartY=HEIGHT+20;
// 画文字
g2d.drawString(words, wordStartX, wordStartY);
g2d.dispose();
outImage.flush();
return outImage;
}
return null;
}
/**
* 设置 Graphics2D 属性 （抗锯齿）
* @param g2d Graphics2D提供对几何形状、坐标转换、颜色管理和文本布局更为复杂的控制
*/
private static void setGraphics2D(Graphics2D g2d){
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
Stroke s = new BasicStroke(1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER);
g2d.setStroke(s);
}
/**
* 设置背景为白色
* @param g2d Graphics2D提供对几何形状、坐标转换、颜色管理和文本布局更为复杂的控制
*/
private static void setColorWhite(Graphics2D g2d){
g2d.setColor(Color.WHITE);
//填充整个屏幕
g2d.fillRect(0,0,600,600);
//设置笔刷
g2d.setColor(Color.BLACK);
}
public static void main(String[] args) throws IOException {
// BufferedImage image = insertWords(getBarCode("123456789"), "123456789");
// A80/90R8A(8A侧通孔)
BufferedImage image = insertWords(getBarCode("A80/90R8A8A"), "A80/90R8A(8A侧通孔)");
ImageIO.write(image, "jpg", new File("G:/Images/barcode.png"));
}
}
3.程序包com.google.zxing.client.j2se不存在
4.com.google.zxing.client.j2se包下载地址：
https://pan.baidu.com/s/1K60wSnLmbch63QyUbimHfA
提取码：junh
