Java generates QR code and java Barcode

Java generates QR code and java Barcode
I. Overview

Zxing is recommended for third-party libraries such as barcode4j and zxing.

Barcode4j Data Link: http://barcode4j.sourceforge.net/

Zxing Data Link: https://github.com/zxing/zxing

Ii. barcode4j

Key code:

DataMatrixBean bean = new DataMatrixBean();final int dpi = 800;String format = "image/png";ByteArrayOutputStream ous = new ByteArrayOutputStream();BitmapCanvasProvider canvas = new BitmapCanvasProvider(ous, format, dpi,BufferedImage.TYPE_BYTE_BINARY, false, 0); bean.generateBarcode(canvas, info);canvas.finish(); 

Supported bar code formats include:

• Interleaved 2 of 5
• ITF-14
• Code 39
• Code 128
• EAN-128, GS1-128 (based on Code 128)
• Codabar
• UPC-A and UPC-E (with supplementals)
• EAN-13 and EAN-8 (with supplementals)
• POSTNET
• Royal Mail Customer Barcode (Four State)
• USPS Intelligent Mail (4-State Customer Barcode)

Supported QR code formats include:

• PDF 417 (ISO/IEC 15438: 2001 (E ))
• DataMatrix (ISO/IEC 16022: 2000 (E ))
• QR Code (ISO/IEC 18004: 2006 (E) (requires ZXing, available from cvs head only)

The output file type is:

• SVG
• EPS (Encapsulated PostScript)
• Bitmap images (such as PNG or JPEG)
• Java2D (AWT)
• Text (for testing and debugging only)