生成一维码的方法（用这个的原因是因为它所用的依赖是可以在maven中央仓库能找到的，不用付费的）

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.DefaultConfiguration;
import org.apache.avalon.framework.logger.ConsoleLogger;
import org.apache.avalon.framework.logger.Logger;
import org.krysalis.barcode4j.BarcodeGenerator;
import org.krysalis.barcode4j.BarcodeUtil;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.MimeTypes;
public class Test1
{
private transient Logger log = new ConsoleLogger(ConsoleLogger.LEVEL_INFO);
public static void main(String[] args)
{
Test1 t =new Test1();
t.getBarcode();
System.out.println("success");
}
protected void getBarcode()
{
String format = MimeTypes.MIME_JPEG;// MimeTypes.MIME_JPEG
String text = "ABCDE0123456789";
ByteArrayOutputStream bout = null;
try
{
BarcodeUtil util = BarcodeUtil.getInstance();
Configuration cfg = buildCfg();
BarcodeGenerator gen = util.createBarcodeGenerator(cfg);
bout = new ByteArrayOutputStream(4096);
int dpi = 300; // 分辨率
int orientation = 0;
BitmapCanvasProvider bitmap = new BitmapCanvasProvider(bout,
format,dpi,BufferedImage.TYPE_BYTE_BINARY,false,
orientation);
gen.generateBarcode(bitmap,text);
bitmap.finish();
File file = new File("c://"+text+".jpg");
FileOutputStream fos = new FileOutputStream(file);
fos.write(bout.toByteArray(),0,bout.size());
// response.setContentType(format);
// response.setContentLength(bout.size());
// response.getOutputStream().write(bout.toByteArray());
// response.getOutputStream().write(bout.toByteArray());
// response.getOutputStream().flush();
}
catch (Exception e)
{
log.error("Error while generating barcode",e);
}
finally
{
if (bout != null)
{
try
{
bout.close();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
/**
* Build an Avalon Configuration object from the request.
*
* @return the newly built COnfiguration object
* @todo Change to bean API
*/
protected Configuration buildCfg()
{
DefaultConfiguration cfg = new DefaultConfiguration("barcode");
// Get type
String type = "code128";
DefaultConfiguration child = new DefaultConfiguration(type);
cfg.addChild(child);
// DefaultConfiguration attr;
// // height
// String height = "100px";
// attr = new DefaultConfiguration("height");
// attr.setValue(height);
// child.addChild(attr);
//
// // width
// String moduleWidth = "300px";
// attr = new DefaultConfiguration("module-width");
// attr.setValue(moduleWidth);
// child.addChild(attr);
return cfg;
}
}

原文链接：https://www.f2er.com/javaschema/285070.html

生成一维码的方法（用这个的原因是因为它所用的依赖是可以在maven中央仓库能找到的，不用付费的）

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