批量生成条形码图片 打包zip (自测有效)
pom引入jra包
<!-- 批量生成条形码-->
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.2.0</version>
</dependency>
完整Controller代码
package com.hx.demo.controller;
import com.hx.demo.Util.BarCodeUtil;
import org.omg.PortableServer.LIFESPAN_POLICY_ID;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.swing.*;
import java.lang.reflect.Array;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/********************************************
* @author :Whx
* @className :
* @description: TODO
* @date :2021/10/3 15:12
* ******************************************/
@Controller
public class BarCodeUtils {
// 条形码接口
@RequestMapping("/getBarCode")
public void getBarCode(HttpServletResponse response, ArrayList<String> list) throws Exception{
ZipOutputStream zos =null;
String downloadFilename = "导出条码";
//转换中文否则可能会产生乱码
downloadFilename = URLEncoder.encode(downloadFilename, "UTF-8");
// 指明response的返回对象是文件流
response.setContentType("application/octet-stream");
// 设置在下载框默认显示的文件名
response.setHeader("Content-Disposition", "attachment;filename=" + downloadFilename+".zip");
zos = new ZipOutputStream(response.getOutputStream());
for (String o : list) {
zos.putNextEntry(new ZipEntry(o+".png"));
ImageIO.write(BarCodeUtil.encode(o,true),"jpg",zos);
}
zos.flush();
zos.close();
}
}
完整BarCodeUtil代码
package com.hx.demo.Util;
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 org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
/**
*
*/
@Service
public class BarCodeUtil {
/**
* 生成code128条形码
*
* @param height 条形码的高度
* @param width 条形码的宽度
* @param message 要生成的文本
* @param withQuietZone 是否两边留白
* @param hideText 隐藏可读文本
* @return 图片对应的字节码
*/
/** 条形码宽度 */
private static final int WIDTH = 332;
/** 条形码高度 */
private static final int HEIGHT = 50;
/** 加文字 条形码 */
private static final int WORDHEIGHT = 80;
/**
* 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的条形码下面加上文字
* @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,boolean needCompress){
// 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 BufferedImage encode(String content,boolean needCompress) throws Exception {
BufferedImage image = insertWords(getBarCode(content),content,needCompress);
return image;
}
}