4dkankan-utils/4dkankan-common-utils/src/main/java/com/fdkankan/common/util/LogoConfig.java

package com.fdkankan.common.util;

import cn.hutool.core.util.StrUtil;
import java.io.InputStream;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.io.ClassPathResource;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;

@Slf4j
public class LogoConfig {
	/**
     * 设置 logo  
     * @param matrixImage 源二维码图片 
     * @return 返回带有logo的二维码图片 
     * @throws IOException 
     * @author Administrator sangwenhao 
     */  
     public BufferedImage LogoMatrix(BufferedImage matrixImage, boolean logo, String logoPath) throws IOException{
         /** 
          * 读取二维码图片，并构建绘图对象 
          */  
         Graphics2D g2 = matrixImage.createGraphics();

         if(logo){
             int matrixWidth = matrixImage.getWidth();
             int matrixHeigh = matrixImage.getHeight();
             File file = null;
             BufferedImage logoBuffer = null;
             try {
                 /**
                  * 读取Logo图片
                  */
                     if(StrUtil.isEmpty(logoPath)){
                         ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
                         Resource[] resources = resolver.getResources("static/img/logo.jpg");
                         Resource resource = resources[0];
                         //获得文件流，因为在jar文件中，不能直接通过文件资源路径拿到文件，但是可以在jar包中拿到文件流
                         InputStream inputStream = resource.getInputStream();
                         logoBuffer = ImageIO.read(inputStream);
                     }else {
                         file = new File(logoPath);
                         logoBuffer = ImageIO.read(file);
                     }
             }catch (IOException e){
                log.info("读取图片流失败，path="+ logoPath, e);
             }

             //开始绘制图片
             g2.drawImage(logoBuffer,matrixWidth/5*2,matrixHeigh/5*2, matrixWidth/5, matrixHeigh/5, null);//绘制
             BasicStroke stroke = new BasicStroke(5,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND);
             g2.setStroke(stroke);// 设置笔画对象  44
             //指定弧度的圆角矩形
             RoundRectangle2D.Float round = new RoundRectangle2D.Float(matrixWidth/5*2, matrixHeigh/5*2, matrixWidth/5, matrixHeigh/5,20,20);
             g2.setColor(Color.white);
             g2.draw(round);// 绘制圆弧矩形
             //设置logo 有一道灰色边框
             BasicStroke stroke2 = new BasicStroke(1,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND);
             g2.setStroke(stroke2);// 设置笔画对象
             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));
             g2.draw(round2);// 绘制圆弧矩形
         }
           
         g2.dispose();  
         matrixImage.flush() ;  
         return matrixImage ;  
     }

//    public static void main(String[] args) {
//        LogoConfig config = new LogoConfig()
//        this.getClass().getResource("/static/img/logo.png").getPath();
//    }
}