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javaqr-codezxing

NoSuchFieldError: MARGIN using ZXing library

I'm using ZXing library to generate QR codes, and I'm trying to set MARGIN property to 1 by this way:

Map<EncodeHintType, Object> hintMap = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
hintMap.put(EncodeHintType.CHARACTER_SET, "UTF-8");

hintMap.put(EncodeHintType.MARGIN, 1); // java.lang.NoSuchFieldError: MARGIN
hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);

QRCodeWriter qrCodeWriter = new QRCodeWriter();
BitMatrix byteMatrix = qrCodeWriter.encode(contents, BarcodeFormat.QR_CODE, 100, 100, hintMap);

But I'm getting java.lang.NoSuchFieldError: MARGIN. I'm using 2.3.0 version:

    <dependency>
        <groupId>com.google.zxing</groupId>
        <artifactId>core</artifactId>
        <version>2.3.0</version>
    </dependency>

I also examined EncodeHintType.class with Eclipse, and MARGIN property is there! I don't understand what's happening.

Any help will be appreciated, thanks in advance!

Solution

  • Inspired by this answer, I discovered that I had installed on Tomcat server two different versions of this library: core-2.0 and core-2.3.0. My code was using at runtime 2.0 version instead of 2.3.0.

    I removed core-2.0.jar from Tomcat, and now it's working! :)