Java绘制图片并进行合成

以下代码可以生成六行两列的图片，代码改成了可以接受参数可循环的。

package com.xgt.util;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;public class ImgUtil {private static final Logger logger = LoggerFactory.getLogger(ImgUtil.class);public static Integer width = 500;public static Integer height = 500;public static void main(String[] args) {try {ImgUtil test = new ImgUtil();// test.ImageTset();} catch (Exception e) {System.out.print(e);}}/*** 注释勿删，测试有用* 生成图片，合成图片* @param fileDirectory* @param realnames* @throws Exception*/public static void ImageTset(String fileDirectory,String[] realnames) throws Exception {/*File _file1 = new File("D:\\QRCodePng\\奥特曼.png");File _file2 = FontImageUtil.createJpgByFontAndAlign("奥特曼", "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:\\QRCodePng\\奥特曼.jpg");File _file3 = new File("D:\\QRCodePng\\谷阿莫.png");File _file4 = FontImageUtil.createJpgByFontAndAlign("谷阿莫", "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:\\QRCodePng\\谷阿莫.jpg");File _file5 = new File("D:\\QRCodePng\\怪兽.png");File _file6 = FontImageUtil.createJpgByFontAndAlign("怪兽", "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:\\QRCodePng\\怪兽.jpg");File _file7 = new File("D:\\QRCodePng\\蓝胖.png");File _file8 = FontImageUtil.createJpgByFontAndAlign("蓝胖", "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:\\QRCodePng\\蓝胖.jpg");File _file9 = new File("D:\\QRCodePng\\淑女.png");File _file10 = FontImageUtil.createJpgByFontAndAlign("淑女", "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:\\QRCodePng\\淑女.jpg");File _file11 = new File("D:\\QRCodePng\\小草.png");File _file12 = FontImageUtil.createJpgByFontAndAlign("小草", "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:\\QRCodePng\\小草.jpg");Image src1 = javax.imageio.ImageIO.read(_file1);Image src2 = javax.imageio.ImageIO.read(_file2);Image src3 = javax.imageio.ImageIO.read(_file3);Image src4 = javax.imageio.ImageIO.read(_file4);Image src5 = javax.imageio.ImageIO.read(_file5);Image src6 = javax.imageio.ImageIO.read(_file6);Image src7 = javax.imageio.ImageIO.read(_file7);Image src8 = javax.imageio.ImageIO.read(_file8);Image src9 = javax.imageio.ImageIO.read(_file9);Image src10 = javax.imageio.ImageIO.read(_file10);Image src11 = javax.imageio.ImageIO.read(_file11);Image src12 = javax.imageio.ImageIO.read(_file12);//获取图片的宽度int width = src1.getWidth(null);//获取图片的高度int height = src1.getHeight(null);*///构造一个类型为预定义图像类型之一的 BufferedImage。 宽度为第一只的宽度，高度为各个图片高度之和BufferedImage tag = new BufferedImage(width + width, 4*height, BufferedImage.TYPE_INT_RGB);//创建输出流FileOutputStream out = new FileOutputStream("D:\\QRCodePng\\合成图.png");//绘制合成图像Graphics g = tag.createGraphics();/*** 此方法最多六行两列，6张二维码图和对应的6张文字图* 如需扩展，要重新调整尺寸* x=0,2,4,6,8...* x对4取余为0存在线性关系，y=x/3* x对4取余不为0存在线性关系，y=(x-2)/3* x=1,3,5,7,9...* x对4取余为1存在线性关系,y=(4x+2)/3* x对4取余不为1存在线性关系，y=x/3*/for(int i=0;i){if(i%2==0) {File _file = new File(fileDirectory,realnames[i/2]+".png");Image src = javax.imageio.ImageIO.read(_file);if(i%4==0){g.drawImage(src, 0, i*height/3, width, height, null);}else {g.drawImage(src, width, (i-2)*height/3, width, height, null);}}else{File _file = FontImageUtil.createJpgByFontAndAlign(realnames[(i-1)/2], "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), fileDirectory+"\\"+realnames[(i-1)/2]+".jpg");Image src = javax.imageio.ImageIO.read(_file);if(i%4==1){g.drawImage(src, 0, (i+2)*height/3, width, height/3, null);}else {g.drawImage(src, width, i*height/3, width, height/3, null);}}}/*g.drawImage(src1, 0, 0, width, height, null);g.drawImage(src2, 0, height, width, height/3, null);g.drawImage(src3, width, 0, width , height, null);g.drawImage(src4, width, height, width, height/3, null);g.drawImage(src5, 0, 4*height/3, width, height, null);g.drawImage(src6, 0, 7*height/3, width, height/3, null);g.drawImage(src7, width, 4*height/3, width, height, null);g.drawImage(src8, width, 7*height/3, width , height/3, null);g.drawImage(src9, 0, 8*height/3, width, height, null);g.drawImage(src10, 0, 11*height/3, width, height/3, null);g.drawImage(src11, width, 8*height/3, width, height, null);g.drawImage(src12, width, 11*height/3, width, height/3, null);*/// 释放此图形的上下文以及它使用的所有系统资源。
        g.dispose();//将绘制的图像生成至输出流JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);encoder.encode(tag);//关闭输出流
        out.close();logger.info("合成图出来了");}}

工具类FontImageUtil.java

package com.xgt.util;
import com.google.zxing.EncodeHintType;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.xgt.dto.ImgQrcodeDto;
import com.xgt.entity.BuildLabourer;
import com.xgt.service.BuildLabourerService;
import net.glxn.qrgen.core.image.ImageType;
import net.glxn.qrgen.javase.QRCode;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import javax.imageio.ImageIO;public class FontImageUtil {private static final Logger logger = LoggerFactory.getLogger(FontImageUtil.class);public static void main(String[] args) throws Exception {//createImage("谷阿莫", new Font("微软雅黑", Font.PLAIN, 32), new File("d:/a.png"), 150, 50);
createJpgByFontAndAlign("生成图片", "right", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:/right.jpg");createJpgByFontAndAlign("生成图片", "center", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:/center.jpg");createJpgByFontAndAlign("生成图片", "left", 32, 150, 50, Color.white, Color.black,new Font(null, Font.BOLD, 32), "D:/left.jpg");}/*** 根据提供的文字生成jpg图片** @param s*            String 文字* @param align*            文字位置（left,right,center）* @param y*            y坐标* @param width*              图片宽度* @param height*              图片高度* @param bgcolor*            Color 背景色* @param fontcolor*            Color 字色* @param font*            Font 字体字形字号* @param jpgname*            String jpg图片名* @return*/public static File createJpgByFontAndAlign(String s, String align, int y, int width, int height,Color bgcolor, Color fontcolor, Font font, String jpgname) {try { // 宽度 高度BufferedImage bimage = new BufferedImage(width,height, BufferedImage.TYPE_INT_RGB);Graphics2D g = bimage.createGraphics();g.setColor(bgcolor); // 背景色g.fillRect(0, 0, width, height); // 画一个矩形
            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); // 去除锯齿(当设置的字体过大的时候,会出现锯齿)g.setColor(fontcolor); // 字的颜色g.setFont(font); // 字体字形字号int size = font.getSize();  //文字大小int x = 5;if(align.equals("left")){x = 5;} else if(align.equals("right")){x = width - size * s.length() - 5;} else if(align.equals("center")){x = (width - size * s.length())/2;}g.drawString(s, x, y); // 在指定坐标除添加文字
            g.dispose();FileOutputStream out = new FileOutputStream(jpgname); // 指定输出文件JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage);param.setQuality(50f, true);encoder.encode(bimage, param); // 存盘out.flush();out.close();} catch (Exception e) {System.out.println("createJpgByFont Failed!");e.printStackTrace();}return new File(jpgname);}}

转载于:https://www.cnblogs.com/Java-Starter/p/9283553.html

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