QRCode maven包

http:///artifact/com.google.zxing/core

目前最新版本3.3.0

<!-- https:///artifact/com.google.zxing/core -->

<dependency>

    <groupId>com.google.zxing</groupId>

    <artifactId>core</artifactId>

    <version>3.3.0</version>

</dependency>