開發(fā)語(yǔ)言：這里使用的是java
具體思路：這個(gè)大家應(yīng)該都知道，先把頭像放到二維碼上，生成帶頭像的二維碼圖片，然后再把帶頭像的二維碼圖片添加到海報(bào)圖片上
具體代碼實(shí)現(xiàn)如下：（效果如何需要自己親自實(shí)踐啦）
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
import java.awt.*;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.io.*;
import java.net.URL;
public class AddPic {
public static void main(String[] args)throws IOException {
String userPath ="頭像的url";
String qrcodeImg ="二維碼的url";
String posterPath ="海報(bào)url";
BufferedImage qrcodeImage1 = ImageIO.read(new URL(qrcodeImg));
//獲取海報(bào)圖片
? ? ? ? BufferedImage posterImage = ImageIO.read(new URL(posterPath));
Graphics posterGrap = posterImage.getGraphics();
BufferedImage userImage = ImageIO.read(new URL(userPath));
System.out.println("Add icon to the qrcode!");
String headImgPath ="xxxxxxxxxxxxxxxxxxxxxxxxx";
? ? ? ? BufferedImage qrcodeImage =new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_sRGB),null).filter(qrcodeImage1,null);
Graphics qrcodeGrap = qrcodeImage.getGraphics();
qrcodeGrap.drawImage(userImage, qrcodeImage.getWidth()/8*3, qrcodeImage.getHeight()/8*3, qrcodeImage.getWidth()/4, qrcodeImage.getHeight()/4,null);
File qrcodeFile =new File(headImgPath);
ImageIO.write(qrcodeImage,"PNG", qrcodeFile);
InputStream imagein =new FileInputStream(headImgPath);
BufferedImage headQrcodeImage = ImageIO.read(imagein);
posterGrap.drawImage(headQrcodeImage,0,0, Integer.parseInt("100"), Integer.parseInt("100"),null);
String finalPosterPath ="合成的圖片";
File posterFile =new File(finalPosterPath);
OutputStream out =new FileOutputStream(posterFile);
ImageWriter writer =? ImageIO.getImageWritersByFormatName("jpg").next();
ImageOutputStream ios = ImageIO.createImageOutputStream(out);
writer.setOutput(ios);
ImageWriteParam param = writer.getDefaultWriteParam();
if (param.canWriteCompressed()){
param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
param.setCompressionQuality(0.2f);
}
writer.write(null,new IIOImage(posterImage,null,null), param);
out.close();
ios.close();
writer.dispose();
}
}
需要注意的問(wèn)題：
1、圖片的色彩空間，例如微信生成的二維碼默認(rèn)的色彩空間是什么，因?yàn)槲覀兿Ｍ深^像二維碼上是彩色的頭像，對(duì)吧
2、生成的圖片太大，不利于傳輸，那么就要考慮圖片壓縮
3、一張圖片添加到另一張圖片上時(shí)，位置的設(shè)置
4、圖片合成的執(zhí)行速度相對(duì)較慢，要用專門的線程處理
