Demo Code to Create QR Code in Java

QR Code is a matrix code (or two-dimensional bar code) created by Japanese corporation Denso-Wave in 1994. The "QR" is derived from "Quick Response", as the creator intended the code to allow its contents to be decoded at high speed.

Java QR-Code prints:

• numeric data (digits 0 - 9);
• alphanumeric data (digits 0 - 9; upper case letters A -Z; nine other characters: space, $ % * + - . / : );
• byte data (default: ISO/IEC 8859-1);
• Kanji characters.

1. How to generate QR-Code barcodes in JSP & HTML pages?

1. Copy "barcoding" folder contents to your Java Servlet container like Tomcat or JBoss's applications folder
2. Restart your Java Servlet container
3. Open your web browser like IE, Firefox, and navigate to http://localhost:8080/barcoding/qrcode?DATA=0123456789
4. To generate QRCode barcode images in JSP or HTML pages, insert the following html img tag code:
   <img src="http://localhost:8080/barcoding/qrcode?DATA=0123456789" border=0 />

2. How to create QR-Code barcodes in Java Servlet?

        try {
            QRCode barcode = new QRCode();
            barcode.setCode("Java QR Code Generation");

            response.setContentType("image/jpeg");
            response.setHeader("Pragma", "no-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
            ServletOutputStream servletoutputstream = response.getOutputStream();

            barcode.drawOnStream(servletoutputstream);

        } catch (Exception e) {
            throw new ServletException(e);
        }        

3. How to generate QR-Code barcodes in Java Class?

        QRCode barcode = new QRCode();
        barcode.setCode("Create QR-Code in Java Class");
        barcode.drawImage2File("qrcode.gif");

4. How to draw QR-Code barcodes to image files?

        QRCode barcode = new QRCode();
        barcode.setCode("Create & encode QRCode images in Java");
        barcode.drawImage2File("qrcode.gif");

5. How to draw & print QR-Code barcodes to Java image objects or stream objects?

        QRCode barcode = new QRCode();
        barcode.setCode("How to draw & print QR-Code barcodes to Java image objects or stream objects?");
        barcode.drawOnGraphics("Graphics2D object");
        
        barcode.drawOnStream("OutputStream object");

Basic

• code : QR-Code encoding data value.
  
  Servlet Parameter: data; Default Value: ""
  
  
• dataMode : QR-Code encoding data mode.
  
  Servlet Parameter: data-mode; Default Value: 0 (MODE_AUTO)
  
  
• processTilde
  
  Servlet Parameter: process-tilde; Default Value: false
  
  
• fnc1Mode
  
  Servlet Parameter: fnc1-mode; Default Value: 0 (FNC1_NONE)
  
  
• ecl : QR-Code error correction level.
  
  Servlet Parameter: ecl; Default Value: 0 (ECL_L)
  
  
• eci : Valid values are from 000000 to 999999.
  
  Servlet Parameter: eci; Default Value: 3 (ECI_DEFAULT)
  
  
• ai : Application Indicator
  
  Servlet Parameter: ai; Default Value: 0
  
  
• version
  
  Servlet Parameter: version; Default Value: 1
  
  

Barcode Size

• barcodeUnit : Unit of meature for all size related properties. 0: Pixel (default); 1: CM; 2: Inch.
  
  Servlet Parameter: barcode-unit; Default Value: 0 (UOM_PIXEL)
  
  
• moduleSize : bar module width & height, default is 3 pixel
  
  Servlet Parameter: module-size; Default Value: 3.0f
  
  
• leftMargin : generated barcode image left margin
  
  Servlet Parameter: left-margin; Default Value: 0.0f
  
  
• rightMargin : generated barcode image right margin
  
  Servlet Parameter: right-margin; Default Value: 0.0f
  
  
• topMargin : generated barcode image top margin
  
  Servlet Parameter: top-margin; Default Value: 0.0f
  
  
• bottomMargin : generated barcode image bottom margin
  
  Servlet Parameter: bottom-margin; Default Value: 0.0f
  
  
• resolution : generated data matrix image resolution in dpi
  
  Servlet Parameter: resolution; Default Value: 72 dpi
  
  
• rotate : barcode data matrix rotate angle, valid values: 0 (ROTATE_0), 1 (ROTATE_90), 2 (ROTATE_180), 3 (ROTATE_270)
  
  Servlet Parameter: rotate; Default Value: 0 (ANGLE_0)
  
  
• barcodeWidth
  
  Servlet Parameter: barcode-width; Default Value: 0
  
  
• barcodeHeight
  
  Servlet Parameter: barcode-height; Default Value: 0
  
  

Multiple QR-Code

• isStructuredAppend
  
  Servlet Parameter: structured-append; Default Value: false
  
  
• symbolCount
  
  Servlet Parameter: symbol-count; Default Value: 0
  
  
• symbolIndex
  
  Servlet Parameter: symbol-index; Default Value: 0
  
  
• parity
  
  Servlet Parameter: parity; Default Value: 0
  
  

• Linear Barcodes  

  - Codabar	- Code-11	- Code-39	- Code-93
  - Code-128	- EAN-128 / GS1-128	- Code 2 of 5	- Interleaved 2 of 5
  - UPC-A	- UPC-E	- EAN-8	- EAN-13
  - GS1 DataBar	- ISBN	- ISSN	- Identcode
  - Leitcode	- Planet	- Postnet	- USPS Intelligent Mail Barcode (Onecode)
  - MSI Plessey	- RM4SCC	- ITF-14

• Data Matrix   - Data Matrix with ECC200, ASCII, text, C40 and Base256 encoding, Extended Channel Interpretation and Structured append.

• PDF-417   - PDF417 with EC levels 1 to 8, text and binary encoding.

• QR-Code   - QRCode with structured append, UPS encoding and mode 2-6 support.