java使用谷歌的zxing生成二維碼，帶logo，更改背景色的二維碼工具類

需要注意的點：
1、這是基於java8以上的代碼
2、默認生成的圖片是png的，不過測試Path路徑寫jpg的後綴也可以的

一、工具類

需要導入zxing的依賴

<dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>${google.zxing.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>${google.zxing.version}</version>
        </dependency>

話不多說，直接上代碼。經過2個小時的重構和精簡，代碼如下：

1.QrcodeUtil類

package com.zgd.base.util.qrcode;

import com.google.zxing.client.j2se.MatrixToImageConfig;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import lombok.extern.slf4j.Slf4j;

import java.awt.*;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import java.nio.file.Path;


/**
 * @author zzzgd
 * @apiNote 使用zxing qrcode生成二維碼
 * @date 2019年8月16日 14點33分
 */
@Slf4j
public class QrcodeUtil {


  private final static String FILE_FORMAT = "png";

  /**
   * 輸出到指定路徑
   * @author zgd
   */
  public static void createQrCodeToPath(BitMatrix bitMatrix, Path path) throws IOException {
    MatrixToImageWriter.writeToPath(bitMatrix, FILE_FORMAT, path);
    log.info("createQrCodeToPath ok...");
  }


  /**
   * 輸出到指定路徑
   * @author zgd
   */
  public static void createQrCodeToPath(BitMatrix bitMatrix, Path path, Color front,Color background) throws IOException {
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriter.writeToPath(bitMatrix, FILE_FORMAT, path,config);
    log.info("createQrCodeToPath ok...");
  }

  /**
   * 輸出到流
   * @author zgd
   * @date 2019/8/16 14:31
   */
  public static void createQrCodeToStream(BitMatrix bitMatrix, OutputStream stream) throws IOException {
    MatrixToImageWriter.writeToStream(bitMatrix, FILE_FORMAT, stream);
    log.info("createQrCodeTo ok...");
  }

  /**
   * 輸出到流
   * @author zgd
   * @date 2019/8/16 14:31
   */
  public static void createQrCodeToStream(BitMatrix bitMatrix, OutputStream stream,Color front,Color background) throws IOException {
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriter.writeToStream(bitMatrix, FILE_FORMAT, stream,config);
    log.info("createQrCodeTo ok...");
  }

  /**
   * 創建附帶本地路徑的logo的二維碼，到指定路徑
   * @throws IOException
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix,Path codePath,Path logoPath)throws IOException{
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoPath);
  }

  /**
   * 創建附帶url路徑的logo的二維碼，到指定路徑
   * @throws IOException
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix, Path codePath, URL logoUrl)throws IOException{
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoUrl);
  }


  /**
   * 創建附帶本地路徑的logo的二維碼，到輸出流
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToStream(BitMatrix bitMatrix,OutputStream os,Path logoPath)throws IOException{
    MatrixToImageWriterWithLogo.writeToStream(bitMatrix,FILE_FORMAT,os,logoPath);
  }

  /**
   * 創建附帶本地路徑的logo的二維碼，到指定路徑
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix,Path codePath,Path logoPath,Color front,Color background)throws IOException{
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoPath,config);
  }

  /**
   * 創建附帶url路徑的logo的二維碼，到指定路徑
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix, Path codePath, URL logoUrl, Color front, Color background)throws IOException{
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoUrl,config);
  }

  /**
   * 創建附帶本地路徑的logo的二維碼，到輸出流
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToStream(BitMatrix bitMatrix,OutputStream os,Path logoPath,Color front,Color background)throws IOException{
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriterWithLogo.writeToStream(bitMatrix,FILE_FORMAT,os,logoPath,config);
  }


}

2. BitMatrixBuilder類

package com.zgd.base.util.qrcode;

import com.google.zxing.client.j2se.MatrixToImageConfig;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import lombok.extern.slf4j.Slf4j;

import java.awt.*;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import java.nio.file.Path;


/**
 * @author zzzgd
 * @apiNote 使用zxing qrcode生成二維碼
 * @date 2019年8月16日 14點33分
 */
@Slf4j
public class QrcodeUtil {


  private final static String FILE_FORMAT = "png";

  /**
   * 輸出到指定路徑
   * @author zgd
   */
  public static void createQrCodeToPath(BitMatrix bitMatrix, Path path) throws IOException {
    MatrixToImageWriter.writeToPath(bitMatrix, FILE_FORMAT, path);
    log.info("createQrCodeToPath ok...");
  }


  /**
   * 輸出到指定路徑
   * @author zgd
   */
  public static void createQrCodeToPath(BitMatrix bitMatrix, Path path, Color front,Color background) throws IOException {
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriter.writeToPath(bitMatrix, FILE_FORMAT, path,config);
    log.info("createQrCodeToPath ok...");
  }

  /**
   * 輸出到流
   * @author zgd
   * @date 2019/8/16 14:31
   */
  public static void createQrCodeToStream(BitMatrix bitMatrix, OutputStream stream) throws IOException {
    MatrixToImageWriter.writeToStream(bitMatrix, FILE_FORMAT, stream);
    log.info("createQrCodeTo ok...");
  }

  /**
   * 輸出到流
   * @author zgd
   * @date 2019/8/16 14:31
   */
  public static void createQrCodeToStream(BitMatrix bitMatrix, OutputStream stream,Color front,Color background) throws IOException {
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriter.writeToStream(bitMatrix, FILE_FORMAT, stream,config);
    log.info("createQrCodeTo ok...");
  }

  /**
   * 創建附帶本地路徑的logo的二維碼，到指定路徑
   * @throws IOException
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix,Path codePath,Path logoPath)throws IOException{
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoPath);
  }

  /**
   * 創建附帶url路徑的logo的二維碼，到指定路徑
   * @throws IOException
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix, Path codePath, URL logoUrl)throws IOException{
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoUrl);
  }


  /**
   * 創建附帶本地路徑的logo的二維碼，到輸出流
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToStream(BitMatrix bitMatrix,OutputStream os,Path logoPath)throws IOException{
    MatrixToImageWriterWithLogo.writeToStream(bitMatrix,FILE_FORMAT,os,logoPath);
  }

  /**
   * 創建附帶本地路徑的logo的二維碼，到指定路徑
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix,Path codePath,Path logoPath,Color front,Color background)throws IOException{
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoPath,config);
  }

  /**
   * 創建附帶url路徑的logo的二維碼，到指定路徑
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToPath(BitMatrix bitMatrix, Path codePath, URL logoUrl, Color front, Color background)throws IOException{
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriterWithLogo.writeToPath(bitMatrix,FILE_FORMAT,codePath,logoUrl,config);
  }

  /**
   * 創建附帶本地路徑的logo的二維碼，到輸出流
   * @author zgd
   * @date 2019/8/16 15:35
   * @return void
   */
  public static void createLogoQrCodeToStream(BitMatrix bitMatrix,OutputStream os,Path logoPath,Color front,Color background)throws IOException{
    MatrixToImageConfig config = new MatrixToImageConfig(front.getRGB(), background.getRGB());
    MatrixToImageWriterWithLogo.writeToStream(bitMatrix,FILE_FORMAT,os,logoPath,config);
  }


}

至此一個普通的二維碼所需要的類就是這兩個，如果需要生成帶logo的，還要下面的類

3. MatrixToImageWriterWithLogo

package com.zgd.base.util.qrcode;


import com.google.zxing.client.j2se.MatrixToImageConfig;
import com.google.zxing.common.BitMatrix;
import com.zgd.base.util.qrcode.config.LogoConfig;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.URL;
import java.nio.file.Path;

/**
 * 模仿Google的MatrixToImageWriter自己編寫的類
 * @author zgd
 * @date 18/09/14 17:53
 */
public class MatrixToImageWriterWithLogo {


  private static final MatrixToImageConfig config = new MatrixToImageConfig();

  private MatrixToImageWriterWithLogo() {
  }

  public static BufferedImage toBufferedImage(BitMatrix matrix,MatrixToImageConfig config) {
    int width = matrix.getWidth();
    int height = matrix.getHeight();
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    for (int x = 0; x < width; x++) {
      for (int y = 0; y < height; y++) {
              image.setRGB(x, y,  (matrix.get(x, y) ? config.getPixelOnColor() : config.getPixelOffColor()));
      }
    }
    return image;
  }

  public static void writeToPath(BitMatrix matrix, String format, Path path, Path logoPath) throws IOException {
    OutputStream os = new FileOutputStream(path.toFile());
    writeToStream(matrix,format,os,logoPath,config);
  }


  public static void writeToPath(BitMatrix matrix, String format, Path path, Path logoPath, MatrixToImageConfig config) throws IOException {
    OutputStream os = new FileOutputStream(path.toFile());
    writeToStream(matrix,format,os,logoPath,config);
  }

  public static void writeToPath(BitMatrix matrix, String format, Path path, URL logoUrl) throws IOException {
    OutputStream os = new FileOutputStream(path.toFile());
    writeToStream(matrix,format,os,logoUrl,config);
  }

  public static void writeToPath(BitMatrix matrix, String format, Path path, URL logoUrl,MatrixToImageConfig config) throws IOException {
    OutputStream os = new FileOutputStream(path.toFile());
    writeToStream(matrix,format,os,logoUrl,config);
  }


  public static void writeToStream(BitMatrix matrix, String format, OutputStream stream, Path logoPath) throws IOException {
    writeToStream(matrix, format, stream, logoPath,config);
  }


  public static void writeToStream(BitMatrix matrix, String format, OutputStream stream, Path logoPath,MatrixToImageConfig config) throws IOException {
    BufferedImage image = toBufferedImage(matrix,config);
    //設置logo圖標
    BufferedImage bi = ImageIO.read(logoPath.toFile());
    image = logoMatrix(image,bi);

    if (!ImageIO.write(image, format, stream)) {
      throw new IOException("Could not write an image of format " + format);
    }
  }

  public static void writeToStream(BitMatrix matrix, String format, OutputStream stream, URL logoUrl) throws IOException {
    writeToStream(matrix,format,stream,logoUrl,config);
  }


  public static void writeToStream(BitMatrix matrix, String format, OutputStream stream, URL logoUrl,MatrixToImageConfig config) throws IOException {
    BufferedImage image = toBufferedImage(matrix,config);
    //設置logo圖標
    BufferedImage bi = ImageIO.read(logoUrl);
    image = logoMatrix(image,bi);

    if (!ImageIO.write(image, format, stream)) {
      throw new IOException("Could not write an image of format " + format);
    }
  }


  /**
   * 設置 logo
   * @param matrixImage 源二維碼圖片
   * @return 返回帶有logo的二維碼圖片
   * @author Administrator sangwenhao
   * @author zgd
   * @date 2019/8/16 14:44
   */
  private static BufferedImage logoMatrix(BufferedImage matrixImage, BufferedImage logo) {
    //讀取二維碼圖片，並構建繪圖對象
    Graphics2D g2 = matrixImage.createGraphics();

    int matrixWidth = matrixImage.getWidth();
    int matrixHeigh = matrixImage.getHeight();

    //繪製
    g2.drawImage(logo, matrixWidth / 5 * 2, matrixHeigh / 5 * 2, matrixWidth / 5, matrixHeigh / 5, null);
    BasicStroke stroke = new BasicStroke(5, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
    // 設置筆畫對象
    g2.setStroke(stroke);
    //指定弧度的圓角矩形
    RoundRectangle2D.Float round = new RoundRectangle2D.Float(matrixWidth / 5 * 2, matrixHeigh / 5 * 2, matrixWidth / 5, matrixHeigh / 5, 20, 20);
    g2.setColor(Color.white);
    // 繪製圓弧矩形
    g2.draw(round);

    //設置logo 有一道灰色邊框
    BasicStroke stroke2 = new BasicStroke(1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
    // 設置筆畫對象
    g2.setStroke(stroke2);
    RoundRectangle2D.Float round2 = new RoundRectangle2D.Float(matrixWidth / 5 * 2 + 2, matrixHeigh / 5 * 2 + 2, matrixWidth / 5 - 4, matrixHeigh / 5 - 4, 20, 20);
    g2.setColor(new Color(128, 128, 128));
    // 繪製圓弧矩形
    g2.draw(round2);
    g2.dispose();
    matrixImage.flush();
    return matrixImage;
  }
}

二、測試

package com.zgd.demo.file.qrcode;

import com.google.zxing.common.BitMatrix;
import com.zgd.base.util.qrcode.QrcodeUtil;
import com.zgd.base.util.qrcode.config.BitMatrixBuilder;
import org.junit.Test;

import java.awt.*;
import java.io.IOException;
import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;

/**
 * QrcodeTest
 *
 * @author zgd
 * @date 2019/8/16 12:00
 */
public class QrcodeTest {

	//測試網絡logo圖片生成二維碼
  @Test
  public void fun01() throws IOException {
    Path path = Paths.get("D:/a.png");
//    URL url = new URL("https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=4142156350,2539270243&fm=26&gp=0.jpg");
    URL url = new URL("logo的網絡地址");
    BitMatrix matrix = BitMatrixBuilder.create().setContent("https://blog.csdn.net/zzzgd_666").build();
    QrcodeUtil.createLogoQrCodeToPath(matrix,path,url);
    System.out.println("ok");
  }

//測試本地logo圖片生成二維碼
  @Test
  @Test
  public void fun02() throws IOException {
    Path path = Paths.get("D:/a2.png");
    Path path2 = Paths.get("D:/logo.jpg");
    BitMatrix matrix = BitMatrixBuilder.create().setContent("https://blog.csdn.net/zzzgd_666").build();
    QrcodeUtil.createLogoQrCodeToPath(matrix,path,path2);
    System.out.println("ok");
  }

//測試修改背景色
  @Test
  public void fun03() throws IOException {
    Path path = Paths.get("D:/a3.png");
    Path path2 = Paths.get("D:/logo.jpg");
    BitMatrix matrix = BitMatrixBuilder.create().setContent("https://blog.csdn.net/zzzgd_666").build();
    QrcodeUtil.createLogoQrCodeToPath(matrix,path,path2, Color.GRAY,Color.ORANGE);
    System.out.println("ok");
  }
}

java使用谷歌的zxing生成二維碼，帶logo，更改背景色的二維碼工具類

一、工具類

1.QrcodeUtil類

2. BitMatrixBuilder類

3. MatrixToImageWriterWithLogo

二、測試

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