[英]Create a byte array barcode using B4j
@Override
public String generateBrcodeForId(String Id) {
BarcodeUtil util = BarcodeUtil.getInstance();
BarcodeGenerator gen;
ByteArrayOutputStream byteArrayOutputStream = null;
try {
gen = util.createBarcodeGenerator(buildCfg("code128"));
OutputStream fout;
fout = new FileOutputStream("code128.jpg");
byteArrayOutputStream = new ByteArrayOutputStream();
int resolution = 200;
BitmapCanvasProvider canvas = new BitmapCanvasProvider(
fout, "image/jpeg", resolution, BufferedImage.TYPE_BYTE_BINARY, false, 0);
gen.generateBarcode(canvas, "12345678");
canvas.finish();
} catch (ConfigurationException | BarcodeException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
private static Configuration buildCfg(String type) {
DefaultConfiguration cfg = new DefaultConfiguration("barcode");
//Bar code type
DefaultConfiguration child = new DefaultConfiguration(type);
cfg.addChild(child);
//Human readable text position
DefaultConfiguration attr = new DefaultConfiguration("human-readable");
DefaultConfiguration subAttr = new DefaultConfiguration("placement");
subAttr.setValue("bottom");
attr.addChild(subAttr);
child.addChild(attr);
return cfg;
}
Have created a bar code using Barcode4j, Here its creating a image code128.jpg. 使用Barcode4j创建了条形码,这里创建了一个图像code128.jpg。 Can I create a byte array instead Of creating an image in the filesystem and send that to the web service client.
我可以创建一个字节数组而不是在文件系统中创建一个图像并将其发送到Web服务客户端。
Got the solution, solved it using ByteArrayOutputStream 得到了解决方案,使用ByteArrayOutputStream解决了它
@Override
public byte[] generateBarcodeForId(String Id) {
BarcodeUtil util = BarcodeUtil.getInstance();
BarcodeGenerator gen;
ByteArrayOutputStream bao = null;
try {
gen = util.createBarcodeGenerator(buildCfg("code128"));
OutputStream fout;
int resolution = 100;
bao = new ByteArrayOutputStream();
BitmapCanvasProvider canvas = new BitmapCanvasProvider(
bao, "image/jpeg", resolution, BufferedImage.TYPE_BYTE_BINARY, false, 0);
gen.generateBarcode(canvas, Id);
canvas.finish();
} catch (ConfigurationException | BarcodeException | IOException e) {
e.printStackTrace();
} finally {
try {
bao.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return bao.toByteArray();
}
private static Configuration buildCfg(String type) {
DefaultConfiguration cfg = new DefaultConfiguration("barcode");
//Bar code type
DefaultConfiguration child = new DefaultConfiguration(type);
cfg.addChild(child);
//Human readable text position
DefaultConfiguration attr = new DefaultConfiguration("human-readable");
DefaultConfiguration subAttr = new DefaultConfiguration("placement");
subAttr.setValue("bottom");
attr.addChild(subAttr);
child.addChild(attr);
return cfg;
}
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