java 生成微信群聊头像

package com.gqhmt.back.controller.login;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

import javax.imageio.ImageIO;

/**
 * 该类是图片处理类
 * 
 * @author 王永丰
 * 出处:http://www.cnblogs.com/zovon/p/4345501.html
 */
public final class ImageUtil {
 public static String[] getXy(int size){
  String[] s = new String[size];
  int _x = 0;
  int _y = 0;
  if(size ==1){
   _x = _y = 6;
   s[0] = "6,6";
  }
  if(size == 2){
   _x =_y = 4;
   s[0] = "4,"+(132/2-60/2);
   s[1] = 60+2*_x+","+ (132/2-60/2);
  }
  if(size == 3){
   _x=_y =4;
   s[0] = (132/2-60/2)+","+_y;
   s[1] = _x+","+(60+2*_y);
   s[2] = (60+2*_y)+","+(60+2*_y);
  }
  if(size ==4){
   _x=_y =4;
   s[0] = _x+","+_y;
   s[1] = (_x*2 + 60)+","+_y;
   s[2] = _x+","+(60+2*_y);
   s[3] = (60+2*_y)+","+(60+2*_y);
  }
  if(size == 5){
   _x = _y = 3;
   s[0] = (132-40*2-_x)/2+","+(132-40*2-_y)/2;
   s[1] = ((132-40*2-_x)/2+40+_x)+","+(132-40*2-_y)/2;
   s[2] = _x+","+((132-40*2-_x)/2+40+_y);
   s[3] = (_x*2+40)+","+((132-40*2-_x)/2+40+_y);
   s[4] = (_x*3+40*2)+","+((132-40*2-_x)/2+40+_y);
  }
  if(size == 6){
   _x = _y = 3;
   s[0] = _x+","+((132-40*2-_x)/2);
   s[1] = (_x*2+40)+","+((132-40*2-_x)/2);
   s[2] = (_x*3+40*2)+","+((132-40*2-_x)/2);
   s[3] = _x+","+((132-40*2-_x)/2+40+_y);
   s[4] = (_x*2+40)+","+((132-40*2-_x)/2+40+_y);
   s[5] = (_x*3+40*2)+","+((132-40*2-_x)/2+40+_y);
  }
  if(size == 7){
   _x=_y =3;
   s[0] = (132-40)/2+","+_y;
   s[1] = _x+","+(_y*2+40);
   s[2] = (_x*2+40)+","+(_y*2+40);
   s[3] = (_x*3+40*2)+","+(_y*2+40);
   s[4] = _x+","+(_y*3+40*2);
   s[5] = (_x*2+40)+","+(_y*3+40*2);
   s[6] = (_x*3+40*2)+","+(_y*3+40*2);
  }
  if(size == 8){
   _x=_y =3;
   s[0] = (132-80-_x)/2+","+_y;
   s[1] = ((132-80-_x)/2+_x+40)+","+_y;
   s[2] = _x+","+(_y*2+40);
   s[3] = (_x*2+40)+","+(_y*2+40);
   s[4] = (_x*3+40*2)+","+(_y*2+40);
   s[5] = _x+","+(_y*3+40*2);
   s[6] = (_x*2+40)+","+(_y*3+40*2);
   s[7] = (_x*3+40*2)+","+(_y*3+40*2); 
  }
  if(size == 9){
   _x=_y = 3;
   s[0]=_x+","+_y;
   s[1] = _x*2+40+","+_y;
   s[2] = _x*3+40*2 +","+_y;
   s[3] = _x+","+(_y*2+40);
   s[4] = (_x*2+40)+","+(_y*2+40);
   s[5] = (_x*3+40*2)+","+(_y*2+40);
   s[6] = _x+","+(_y*3+40*2);
   s[7] = (_x*2+40)+","+(_y*3+40*2);
   s[8] = (_x*3+40*2)+","+(_y*3+40*2); 
  }
  return s;
 }
 
 public static int getWidth(int size){
  int width = 0;
  if(size == 1){
   width = 120;
  }
  if(size>1 && size<=4){
   width = 60;
  }
  if(size>=5){
   width = 40;
  }
  return width;
 }
 
 public static void download(String urlString, String filename,String savePath) throws Exception {  
        // 构造URL  
        URL url = new URL(urlString);  
        // 打开连接  
        URLConnection con = url.openConnection();  
        //设置请求超时为5s  
        con.setConnectTimeout(5*1000);  
        // 输入流  
        InputStream is = con.getInputStream();  
      
        // 1K的数据缓冲  
        byte[] bs = new byte[1024];  
        // 读取到的数据长度  
        int len;  
        // 输出的文件流  
       File sf=new File(savePath);  
       if(!sf.exists()){  
           sf.mkdirs();  
       }  
       OutputStream os = new FileOutputStream(sf.getPath()+File.separator+filename);  
        // 开始读取  
        while ((len = is.read(bs)) != -1) {  
          os.write(bs, 0, len);  
        }  
        // 完毕，关闭所有链接  
        os.close();  
        is.close();  
    }   
 
 public static String zoom(String sourcePath,String targetPath,int width,int height) throws IOException{ 
        File imageFile = new File(sourcePath); 
        if(!imageFile.exists()){ 
            throw new IOException("Not found the images:"+sourcePath); 
        } 
        if(targetPath==null || targetPath.isEmpty()) targetPath = sourcePath; 
        String format = sourcePath.substring(sourcePath.lastIndexOf(".")+1,sourcePath.length()); 
        BufferedImage image = ImageIO.read(imageFile); 
        image = zoom(image,width,height); 
        ImageIO.write(image, format, new File(targetPath)); 
        return targetPath; 
    } 
 
 private static BufferedImage zoom(BufferedImage sourceImage , int width , int height){ 
        BufferedImage zoomImage = new BufferedImage(width, height, sourceImage.getType()); 
        Image image = sourceImage.getScaledInstance(width, height, Image.SCALE_SMOOTH); 
        Graphics gc = zoomImage.getGraphics(); 
        gc.setColor(Color.WHITE); 
        gc.drawImage( image , 0, 0, null); 
        return zoomImage; 
    }
 
 public static void createImage(List<String> files,String outPath) throws Exception{
  String[] imageSize = getXy(files.size());
  int width = getWidth(files.size());
  BufferedImage ImageNew = new BufferedImage(132,132,BufferedImage.TYPE_INT_RGB);
//设置背景为白色
  for(int m=0;m<132;m++){
   for(int n=0;n<132;n++){
    ImageNew.setRGB(m, n, 0xFFFFFF);
   }
  }
  for(int i=0;i<imageSize.length;i++){
   String size = imageSize[i];
   String[] sizeArr = size.split(",");
   int x = Integer.valueOf(sizeArr[0]);
   int y = Integer.valueOf(sizeArr[1]);
   String f = zoom(files.get(i),"E:\\test",width,width);
   File fileOne = new File(f);
         BufferedImage ImageOne = ImageIO.read(fileOne);

         //从图片中读取RGB
         int[] ImageArrayOne = new int[width*width];
         ImageArrayOne = ImageOne.getRGB(0,0,width,width,ImageArrayOne,0,width);
   ImageNew.setRGB(x,y,width,width,ImageArrayOne,0,width);//设置左半部分的RGB
  }
  File outFile = new File(outPath);
     ImageIO.write(ImageNew, "png", outFile);//写图片
 }
 
 public static void main(String[] args) throws Exception{
     List<String> imgList=new ArrayList<String>();
     imgList.add("E:/qq/1.jpg");
     imgList.add("E:/qq/2.jpg");
     imgList.add("E:/qq/3.jpg");
     /*imgList.add("E:/qq/4.jpg");
     imgList.add("E:/qq/5.jpg");
     imgList.add("E:/qq/6.jpg");
     imgList.add("E:/qq/7.jpg");
     imgList.add("E:/qq/8.jpg");
     imgList.add("E:/qq/9.jpg");*/
  createImage(imgList,"E:g.png");
  System.out.println("生成完成");
 }

}

java 生成微信群聊头像

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