maven依賴
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.4.0</version>
</dependency>
工具類：
import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Hashtable;
import java.util.Random;
import javax.imageio.ImageIO;
import java.net.HttpURLConnection;
import java.net.URL;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
/**
* 提供二維碼生成和解析工具類
* @author Administrator
*
*/
public class QRCodeUtil {
private static final String CHARSET = "utf-8";
private static final String FORMAT_NAME = "JPG";
private static final int QRCODE_SIZE = 150; // 二維碼尺寸，寬度和高度均是300
private static final int WIDTH = 50; //LOGO寬度
private static final int HEIGHT = 50; //LOGO高度
/**
* 生成二維碼的方法
* @param content 目標url
* @param imgPath logo圖片地址
* @param needCompress 是否壓縮logo
* @return 二維碼圖片
* @throws Exception
*/
private static BufferedImage createImage(String content, String imgPath,boolean needCompress) throws Exception {
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);//指定二維碼的糾錯等級爲高級
hints.put(EncodeHintType.CHARACTER_SET, CHARSET);//指定字符編碼爲“utf-8”
hints.put(EncodeHintType.MARGIN, 1); //設置圖片的邊距
//參數1：內容，目標url,參數2：固定寫法，參數3：二維碼的寬度，參數4：二維碼的高度，參數5：二維碼屬性設置
BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);
int width = bitMatrix.getWidth();//二維碼的寬度
int height = bitMatrix.getHeight();//二維碼的高度
BufferedImage image = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);//生成的二維碼image
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000: 0xFFFFFFFF);
}
}
if (imgPath == null || "".equals(imgPath)) {//logo圖片地址爲null或空時
return image; //只返回二維碼圖片，無中間的logo
}
// 插入logo圖片 參數1：二維碼圖片，參數2：logo圖片地址，參數3：壓縮圖片
QRCodeUtil.insertImage(image, imgPath, needCompress);
return image;
}
/**
* 插入logo圖片
* @param source 二維碼圖片
* @param imgPath LOGO圖片地址
* @param needCompress 是否壓縮
* @throws Exception
*/
private static void insertImage(BufferedImage source, String imgPath,boolean needCompress) throws Exception {
File file = new File(imgPath);//logo圖片地址放入文件
Image src;
if (!file.exists()) {
//通過網絡路徑獲取
InputStream inputStream=getImageStream(imgPath);
src = ImageIO.read(inputStream);
}else {
//本地路徑獲取
src = ImageIO.read(new File(imgPath));
}
int width = src.getWidth(null);
int height = src.getHeight(null);
if (needCompress) { // 壓縮LOGO
if (width > WIDTH) { //如果上傳logo寬 >60
width = WIDTH;
}
if (height > HEIGHT) { //如果上傳logo高>60
height = HEIGHT;
}
Image image = src.getScaledInstance(width, height,Image.SCALE_SMOOTH);
BufferedImage tag = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);
Graphics g = tag.getGraphics();
g.drawImage(image, 0, 0, null); // 繪製縮小後的圖
g.dispose();
src = image;
}
// 插入LOGO
Graphics2D graph = source.createGraphics();
int x = (QRCODE_SIZE - width) / 2;
int y = (QRCODE_SIZE - height) / 2;
graph.drawImage(src, x, y, width, height, null);
Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
graph.setStroke(new BasicStroke(3f));
graph.draw(shape);
graph.dispose();
}
/**
* 生成二維碼(內嵌LOGO)
* @param content 內容
* @param imgPath logo地址
* @param destPath 存放目錄
* @param needCompress 是否壓縮logo
* @throws Exception
*/
public static void encode(String content, String imgPath, String destPath, boolean needCompress) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, imgPath,needCompress); //生成二維碼
mkdirs(destPath);
String file = new Random().nextInt(99999) + ".jpg";
ImageIO.write(image, FORMAT_NAME, new File(destPath + "/" + file));
}
/**
* 當文件夾不存在時，mkdirs會自動創建多層目錄，區別於mkdir．(mkdir如果父目錄不存在則會拋出異常)
* @param destPath 存放目錄
*/
public static void mkdirs(String destPath) {
File file = new File(destPath);
if (!file.exists() && !file.isDirectory()) {
file.mkdirs();
}
}
/**
* 生成二維碼(內嵌LOGO)
*
* @param content 內容
* @param imgPath LOGO地址
* @param output 輸出流
* @param needCompress 是否壓縮LOGO
* @throws Exception
*/
public static void encode(String content, String imgPath,OutputStream output, boolean needCompress) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, imgPath,needCompress);
ImageIO.write(image, FORMAT_NAME, output);
}
/**
* 生成二維碼
*
* @param content 內容
* @param output 輸出流
* @throws Exception
*/
public static void encode(String content, OutputStream output)throws Exception {
QRCodeUtil.encode(content, null, output, false);
}
/**
* 獲取網絡圖片流
*
* @param url
* @return
*/
public static InputStream getImageStream(String url) {
try {
HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
connection.setReadTimeout(5000);
connection.setConnectTimeout(5000);
connection.setRequestMethod("GET");
if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream inputStream = connection.getInputStream();
return inputStream;
}
} catch (IOException e) {
System.out.println("獲取網絡圖片出現異常，圖片路徑爲：" + url);
e.printStackTrace();
}
return null;
}
/**
*將頭像,二維碼和海報合成
* @throws IOException
*/
public static void drawImage() throws IOException {
//海報圖
String backgroundImageUrl = "http://img1.juimg.com/171010/330841-1G01000050879.jpg";
//二維碼
String qrCodeImageUrl = "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1553504957130&di=02fae20a5c0f885d52299b2b1d682c86&imgtype=0&src=http%3A%2F%2Fimg.atobo.com%2FProductImg%2FEWM%2FUWeb%2F3%2F2%2F1%2F3%2F061%2F3213061%2F1.gif";
//頭像
String headUrl = "http://pic.51yuansu.com/pic3/cover/00/63/25/589bdedf5475d_610.jpg";
BufferedImage bgBufImage = ImageIO.read(new URL(backgroundImageUrl));
Graphics2D bgBufImageGraphics = bgBufImage.createGraphics();
BufferedImage qrCodeImage = ImageIO.read(new URL(qrCodeImageUrl));
BufferedImage headImage = ImageIO.read(new URL(headUrl));
//設置圓形圖片
BufferedImage roundHeadImg = new BufferedImage(headImage.getWidth(), headImage.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics2D roundHeadGraphics = roundHeadImg.createGraphics();
Ellipse2D.Double shape = new Ellipse2D.Double(0, 0, roundHeadImg.getWidth(), roundHeadImg.getHeight());
roundHeadGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
roundHeadImg = roundHeadGraphics.getDeviceConfiguration().createCompatibleImage(headImage.getWidth(), headImage.getHeight(),
Transparency.TRANSLUCENT);
roundHeadGraphics = roundHeadImg.createGraphics();
// 使用 setRenderingHint 設置抗鋸齒
roundHeadGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
roundHeadGraphics.setClip(shape);
roundHeadGraphics.drawImage(headImage, 0, 0, null);
roundHeadGraphics.dispose();
bgBufImageGraphics.drawImage(qrCodeImage,390, 200, qrCodeImage.getWidth(), qrCodeImage.getHeight(), null);
//bgBufImageGraphics.drawImage(roundHeadImg, 50, 100, HEAD_URL_WIDTH, HEAD_URL_HEIGHT, null);
bgBufImageGraphics.dispose();
ImageIO.write(bgBufImage, "png", new File("C:\\Users\\Public\\Desktop\\demo2.png"));
System.out.printf("生成圖片完成");
}
/**
*將二維碼和海報合成一張圖片
* @throws IOException
*/
public static void drawImage1(String backgroundImageUrl,BufferedImage qrCodeImage,String putImgPoster) throws IOException {
//這裏對方法進行了修改直接把 BufferedImage qrCodeImage傳入進來方便處理 也可以傳入 String qrCodeImageUrl 圖片網絡路徑
BufferedImage bgBufImage = ImageIO.read(new URL(backgroundImageUrl));
Graphics2D bgBufImageGraphics = bgBufImage.createGraphics();
//BufferedImage qrCodeImage = ImageIO.read(new URL(qrCodeImageUrl));
bgBufImageGraphics.drawImage(qrCodeImage,390, 200, qrCodeImage.getWidth(), qrCodeImage.getHeight(), null);
bgBufImageGraphics.dispose();
ImageIO.write(bgBufImage, "png", new File(putImgPoster));
System.out.printf("生成圖片完成");
}
public static void main(String[] args) throws Exception{
BufferedImage ti=createImage("xh6lSOzYdIMVanArR9AY0","https://b-ssl.duitang.com/uploads/item/201706/27/20170627012435_mJLiX.thumb.700_0.jpeg",true);
//輸出文件
//File file = new File("E:\\123.jpg");
//ImageIO.write(ti, "jpg", file);
//drawImage();
drawImage1("http://img1.juimg.com/171010/330841-1G01000050879.jpg",ti,"C:\\Users\\Public\\Desktop\\dome.jpg");
}
}
展示效果：
