Databases
StackOverflow2013
Postsdbo
POReading QRCode with Zxing in Java
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POReading QRCode with Zxing in Java
    text
    copied!<p>Some questions about using Zxing...</p> <p>I write the following code to read barcode from an image:</p> <pre><code>public class BarCodeDecode { /** * @param args */ public static void main(String[] args) { try { String tmpImgFile = "D:\\FormCode128.TIF"; Map&lt;DecodeHintType,Object&gt; tmpHintsMap = new EnumMap&lt;DecodeHintType, Object&gt;(DecodeHintType.class); tmpHintsMap.put(DecodeHintType.TRY_HARDER, Boolean.TRUE); tmpHintsMap.put(DecodeHintType.POSSIBLE_FORMATS, EnumSet.allOf(BarcodeFormat.class)); tmpHintsMap.put(DecodeHintType.PURE_BARCODE, Boolean.FALSE); File tmpFile = new File(tmpImgFile); String tmpRetString = BarCodeUtil.decode(tmpFile, tmpHintsMap); //String tmpRetString = BarCodeUtil.decode(tmpFile, null); System.out.println(tmpRetString); } catch (Exception tmpExpt) { System.out.println("main: " + "Excpt err! (" + tmpExpt.getMessage() + ")"); } System.out.println("main: " + "Program end."); } } public class BarCodeUtil { private static BarcodeFormat DEFAULT_BARCODE_FORMAT = BarcodeFormat.CODE_128; /** * Decode method used to read image or barcode itself, and recognize the barcode, * get the encoded contents and returns it. * @param whatFile image that need to be read. * @param config configuration used when reading the barcode. * @return decoded results from barcode. */ public static String decode(File whatFile, Map&lt;DecodeHintType, Object&gt; whatHints) throws Exception { // check the required parameters if (whatFile == null || whatFile.getName().trim().isEmpty()) throw new IllegalArgumentException("File not found, or invalid file name."); BufferedImage tmpBfrImage; try { tmpBfrImage = ImageIO.read(whatFile); } catch (IOException tmpIoe) { throw new Exception(tmpIoe.getMessage()); } if (tmpBfrImage == null) throw new IllegalArgumentException("Could not decode image."); LuminanceSource tmpSource = new BufferedImageLuminanceSource(tmpBfrImage); BinaryBitmap tmpBitmap = new BinaryBitmap(new HybridBinarizer(tmpSource)); MultiFormatReader tmpBarcodeReader = new MultiFormatReader(); Result tmpResult; String tmpFinalResult; try { if (whatHints != null &amp;&amp; ! whatHints.isEmpty()) tmpResult = tmpBarcodeReader.decode(tmpBitmap, whatHints); else tmpResult = tmpBarcodeReader.decode(tmpBitmap); // setting results. tmpFinalResult = String.valueOf(tmpResult.getText()); } catch (Exception tmpExcpt) { throw new Exception("BarCodeUtil.decode Excpt err - " + tmpExcpt.toString() + " - " + tmpExcpt.getMessage()); } return tmpFinalResult; } } </code></pre> <p>I try to read the following two images that contains code128 and QRCode.</p> <p><img src="https://i.stack.imgur.com/iuN0h.png" alt="enter image description here"> <img src="https://i.stack.imgur.com/LxJTD.png" alt="enter image description here"></p> <p>It can work for the code128 but not for the QRCode. Any one knows why... </p>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload