barcode4j能生成条形码，二维码，条形二维码等，这里我为大家展示条形二维码的代码（条形二维码国内参考资料太少，如各位好友有更好的方法请回帖）
barcode4j能生成条形码主要需要barcode4j.jar和avalon-framework-4.2.0.jar两个jar包（jar包你可以去barcode4j官网下载，也可以在我的资源中下载都什么免费的哦）
java代码：

import java.awt.p_w_picpath.BufferedImage;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import org.apache.avalon.framework.configuration.Configuration;

import org.apache.avalon.framework.configuration.ConfigurationException;

import org.apache.avalon.framework.configuration.DefaultConfiguration;

import org.krysalis.barcode4j.BarcodeException;

import org.krysalis.barcode4j.BarcodeGenerator;

import org.krysalis.barcode4j.BarcodeUtil;

import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
public class Barcode4jCreatePDF417 {

public static void main(String[] args) throws IOException, ConfigurationException, BarcodeException {


BarcodeUtil util = BarcodeUtil.getInstance();

BarcodeGenerator gen = util.createBarcodeGenerator(buildCfg("pdf417"));

OutputStream fout = new FileOutputStream("d:/pdf417.jpg");

int resolution = 200;

BitmapCanvasProvider canvas = new BitmapCanvasProvider( fout, "p_w_picpath/jpeg", resolution,
BufferedImage.TYPE_BYTE_BINARY, false, 0);

gen.generateBarcode(canvas, "400763000011"); canvas.finish();

}

private static Configuration buildCfg(String type) {


DefaultConfiguration cfg = new DefaultConfiguration("barcode");

//条码类型

DefaultConfiguration child = new DefaultConfiguration(type);

cfg.addChild(child);

//条形码位置

DefaultConfiguration attr = new DefaultConfiguration("human-readable");

DefaultConfiguration subAttr = new DefaultConfiguration("placement");

subAttr.setValue("bottom");

attr.addChild(subAttr);

child.addChild(attr);

return cfg;

}
}