java创建二维码，二维码和背景图片合成，二维码设置圆角

package com.creditcard.merch.util;

import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import org.springframework.stereotype.Service;
import org.springframework.util.ClassUtils;

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;

@Service
public class QRCodeUtil {

//二维码颜色
private static final int BLACK = 0xFF000000;
//二维码颜色
private static final int WHITE = 0xFFFFFFFF;

/**
 * <span style="font-size:18px;font-weight:blod;">ZXing 方式生成二维码</span>
 * @param text    <a href="javascript:void();">二维码内容</a>
 * @param width    二维码宽
 * @param height    二维码高
 * @param outPutPath    二维码生成保存路径
 * @param imageType        二维码生成格式
 */
public static void zxingCodeCreate(String text, int width, int height, String outPutPath,String fileName, String imageType){
	Map<EncodeHintType, String> his = new HashMap<EncodeHintType, String>();
    //设置编码字符集
    his.put(EncodeHintType.CHARACTER_SET, "utf-8");
    try {
        //1、生成二维码
        BitMatrix encode = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, his);
        
        //2、获取二维码宽高
        int codeWidth = encode.getWidth();
        int codeHeight = encode.getHeight();
        
        //3、将二维码放入缓冲流
        BufferedImage image = new BufferedImage(codeWidth, codeHeight, BufferedImage.TYPE_INT_RGB);
        for (int i = 0; i < codeWidth; i++) {
            for (int j = 0; j < codeHeight; j++) {
                //4、循环将二维码内容定入图片
                image.setRGB(i, j, encode.get(i, j) ? BLACK : WHITE);
            }
        }
        File outPut = new File(outPutPath);
        //如果文件夹不存在创建图片
        if(!outPut.isDirectory()) {
        	outPut.mkdirs();
        }
        File outPutImage = new File(outPutPath+"/"+fileName);
        //如果图片不存在创建图片
    	if(!outPutImage.exists()) {
    		outPutImage.createNewFile();
    	}	
        //5、将二维码写入图片
        ImageIO.write(image, imageType, outPutImage);
        System.out.println("生成成功");
    } catch (WriterException e) {
        e.printStackTrace();
        System.out.println("二维码生成失败");
    } catch (IOException e) {
        e.printStackTrace();
        System.out.println("生成二维码图片失败");
    }
}


/**
 * 
 * 生成带背景二维码图片
 * @param text 二维码内容 例：https://www.baidu.com
 * @param width 二维码宽度
 * @param height 二维码高度
 * @param bigPath 背景图路径
 * @param x   二维码距离左边像素
 * @param y   二维码距离顶部像素
 * @return
 * 2018年11月23日
 */
public static void zxingCodeCreateImage(String text, int width, int height,String bigPath, String x, String y){
	Map<EncodeHintType, String> his = new HashMap<EncodeHintType, String>();
    //设置编码字符集
    his.put(EncodeHintType.CHARACTER_SET, "utf-8");
    try {
        //1、生成二维码
        BitMatrix encode = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, his);
        
        //2、获取二维码宽高
        int codeWidth = encode.getWidth();
        int codeHeight = encode.getHeight();
        
        //3、将二维码放入缓冲流
        BufferedImage image = new BufferedImage(codeWidth, codeHeight, BufferedImage.TYPE_INT_RGB);
        for (int i = 0; i < codeWidth; i++) {
            for (int j = 0; j < codeHeight; j++) {
                //4、循环将二维码内容定入图片
                image.setRGB(i, j, encode.get(i, j) ? BLACK : WHITE);
            }
        }
        //设置圆角
        image=setClip(image, 10);
        mergeImage(bigPath, image, x, y);
    } catch (Exception e) {
        e.printStackTrace();
        System.out.println("二维码图片生成失败");
    }
}

/**
 * 图片切圆角
 * @param srcImage
 * @param radius
 * @return
 */
public static BufferedImage setClip(BufferedImage srcImage, int radius){
    int width = srcImage.getWidth();
    int height = srcImage.getHeight();
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D gs = image.createGraphics();

    gs.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    gs.setClip(new RoundRectangle2D.Double(0, 0, width, height, radius, radius));
    gs.drawImage(srcImage, 0, 0, null);
    gs.dispose();
    return image;
}

/**
 * 将二维码绘图到图片中
 * @param bigPath
 * @param small
 * @param x
 * @param y
 * @throws IOException
 * 2018年11月23日
 */
public static void mergeImage(String bigPath,  BufferedImage small, String x, String y) throws IOException {
	 
    try {
        BufferedImage big = ImageIO.read(new File(bigPath));
        Graphics2D g = big.createGraphics();
        float fx = Float.parseFloat(x);
        float fy = Float.parseFloat(y);
        int x_i = (int) fx;
        int y_i = (int) fy;
        g.drawImage(small, x_i, y_i, small.getWidth(), small.getHeight(), null);
        g.dispose();
        ImageIO.write(big, "png", new File(bigPath));

    } catch (Exception e) {
        e.printStackTrace();
    }
}


public static void main(String[] args) throws IOException {
	String path = ClassUtils.getDefaultClassLoader().getResource("").getPath();
	String t=Thread.currentThread().getContextClassLoader().getResource("").getPath();
	path=path.replace('/', '\\');
	System.out.println(path);
	zxingCodeCreateImage("https://www.baidu.com", 348, 348,path+"/pyq.jpg", "824", "1790");

// zxingCodeCreateImage(“https://www.baidu.com”, 222, 222, “E://ad.jpg”, “137”, “344”);
}
}