我用的是google.zxing的這個插件來完成生成二維碼的,還是很方便的。
我們需要引入google.zxing的jar包。 地址爲:1. https://mvnrepository.com/artifact/com.google.zxing/core
2. https://mvnrepository.com/artifact/com.google.zxing/javase
代碼如下:
package asd;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import javax.imageio.ImageIO;
//import org.apache.commons.lang3.StringUtils;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
/**
* 畫制定logo和制定描述的二維碼
*
* @author songyz
*
*/
public class ZXingCode {
private static final int QRCOLOR = 0xFF000000; // 默認是黑色
private static final int BGWHITE = 0xFFFFFFFF; // 背景顏色
private static final int WIDTH = 400; // 二維碼寬
private static final int HEIGHT = 400; // 二維碼高
// 用於設置QR二維碼參數
private static Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>() {
private static final long serialVersionUID = 1L;
{
put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 設置QR二維碼的糾錯級別(H爲最高級別)具體級別信息
put(EncodeHintType.CHARACTER_SET, "utf-8");// 設置編碼方式
}
};
// 生成帶logo的二維碼圖片
public static void drawLogoQRCode(File logoFile, File codeFile, String qrUrl) {
try {
MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
// 參數順序分別爲:編碼內容,編碼類型,生成圖片寬度,生成圖片高度,設置參數
BitMatrix bm = multiFormatWriter.encode(qrUrl, BarcodeFormat.QR_CODE, WIDTH, HEIGHT, hints);
BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
// 開始利用二維碼數據創建Bitmap圖片,分別設爲黑(0xFFFFFFFF)白(0xFF000000)兩色
for (int x = 0; x < WIDTH; x++) {
for (int y = 0; y < HEIGHT; y++) {
image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
}
}
int width = image.getWidth();
int height = image.getHeight();
if (Objects.nonNull(logoFile) && logoFile.exists()) {
// 構建繪圖對象
Graphics2D g = image.createGraphics();
// 讀取Logo圖片
BufferedImage logo = ImageIO.read(logoFile);
// 開始繪製logo圖片
g.drawImage(logo, width * 2 / 5, height * 2 / 5, width * 2 / 10, height * 2 / 10, null);
g.dispose();
logo.flush();
}
image.flush();
ImageIO.write(image, "png", codeFile); // TODO
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws WriterException {
File logoFile = new File("E://erweima/QQ.jpg"); //logo
File QrCodeFile = new File("E://erweima/"+ UUID.randomUUID()+".png"); //二維碼生成地址以及名稱格式
String url = "https://www.baidu.com/?tn=96228755_hao_pg"; // 掃描二維碼進入網址
ZXingCode.drawLogoQRCode(logoFile, QrCodeFile, url);
}
}
效果展示:
參考鏈接:https://blog.csdn.net/qq_22860341/article/details/80222591