java生成二维码

1.maven 引入如下

        <!-- 二维码 -->
          <dependency>  
            <groupId>com.google.zxing</groupId>  
            <artifactId>core</artifactId>  
            <version>3.2.0</version>  
        </dependency>

2.代码

import java.io.File;
import java.util.Hashtable;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.pay.business.util.QRCodeUtilByZXing;

public class BuildQRcode {

    public static void main(String[] args) {
        String content = "https://www.oschina.net/";
        MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
        Hashtable hints = new Hashtable();
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        File file1 = new File("c:/", "扫我一下" + ".jpg");
        try {
            BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, 350, 350, hints);
            QRCodeUtilByZXing zx = new QRCodeUtilByZXing();
            zx.writeToFile(bitMatrix, "jpg", file1);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            
        }
    }
}