这两天通过在网上查阅资料，了解了在图片上插入文字并保存的功能，下面记录一下。
工具类：PrintImage。
package com.learning.www.utils;import java.awt.BasicStroke;import java.awt.Color;import java.awt.Font;import java.awt.Graphics2D;import java.awt.RenderingHints;import java.awt.Shape;import java.awt.font.GlyphVector;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.net.URL; import javax.imageio.ImageIO; public class PrintImage { private Font font = new Font("黑体", Font.PLAIN, 25); // 添加字体的属性设置 private Graphics2D g = null; private int fontsize = 0; /** * 导入本地图片到缓冲区 */ public BufferedImage loadImageLocal(String imgName) { try { return ImageIO.read(new File(imgName)); } catch (IOException e) { System.out.println(e.getMessage()); } return null; } /** * 导入网络图片到缓冲区 */ public BufferedImage loadImageUrl(String imgName) { try { URL url = new URL(imgName); return ImageIO.read(url); } catch (IOException e) { System.out.println(e.getMessage()); } return null; } /** * 生成新图片到本地 */ public void writeImageLocal(String newImage, BufferedImage img) { if (newImage != null && img != null) { try { File outputfile = new File(newImage); ImageIO.write(img, "jpg", outputfile); } catch (IOException e) { System.out.println(e.getMessage()); } } } /** * 设定文字的字体等 */ public void setFont(Font font) { this.font = font; } /** * 修改图片,返回修改后的图片缓冲区（只输出一行文本） */ public BufferedImage modifyImage(BufferedImage img, Object content, int x, int y,Color color) { try { int w = img.getWidth(); int h = img.getHeight(); g = img.createGraphics(); g.setBackground(Color.BLUE); //g.setColor(new Color(120, 120, 110));//设置字体颜色 g.setColor(color);//设置字体颜色 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB); g.setStroke(new BasicStroke(3)); if (this.font != null) g.setFont(this.font); if (content != null) { g.translate(w / 2, h / 2); //g.rotate(8 * Math.PI / 180); g.drawString(content.toString(), x, y); } g.dispose(); } catch (Exception e) { System.out.println(e.getMessage()); } return img; } /** * 修改图片,返回修改后的图片缓冲区（只输出一行文本） * * 时间:2007-10-8 * * @param img * @return */ public BufferedImage modifyImageYe(BufferedImage img) { try { int w = img.getWidth(); int h = img.getHeight(); g = img.createGraphics(); g.setBackground(Color.WHITE); g.setColor(Color.blue);//设置字体颜色 if (this.font != null) g.setFont(this.font); g.drawString("www.hi.baidu.com?xia_mingjian", w - 85, h - 5); g.dispose(); } catch (Exception e) { System.out.println(e.getMessage()); } return img; } public BufferedImage modifyImagetogeter(BufferedImage b, BufferedImage d) { try { int w = b.getWidth(); int h = b.getHeight(); g = d.createGraphics(); g.drawImage(b, 100, 10, w, h, null); g.dispose(); } catch (Exception e) { System.out.println(e.getMessage()); } return d; } /*** * 插入描边的字体 * @param img * @param content * @param w * @param h * @return */ public BufferedImage modifyShapImg(BufferedImage img, String content, int w, int h) {// int w = img.getWidth();// int h = img.getHeight(); g = img.createGraphics(); //Font f = new Font("Courier New", Font.BOLD, 140); GlyphVector v = font.createGlyphVector(g.getFontMetrics(font).getFontRenderContext(), content); Shape shape = v.getOutline(); if (content != null) { g.translate(w, h); //g.rotate(8 * Math.PI / 180); //g.drawString(content.toString(), x, y); } g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB); g.setColor(new Color(0,90,160)); g.fill(shape); g.setColor(new Color(248,248,255)); g.setStroke(new BasicStroke(2)); g.draw(shape); return img; } }
插入多条的格式相同的文字：
package com.learning.www.utils; import java.awt.Color;import java.awt.Font;import java.awt.image.BufferedImage; public class PrintJobToImg { public static void printJobToImg(PrintImage tt,BufferedImage d,String job1,String need1,String amount1,String salary1,int y) { if(null != job1 && !job1.equals("")) { need1 = "岗位职责:"+need1; int strleth = need1.length()+5; int num = strleth/40; int subindex = 0; int j = 40; //y = -350; String[] s1 = new String[num+1]; tt.setFont(new Font("黑体",Font.BOLD, 28)); tt.modifyImage(d, "职位:"+job1, -50, y, new Color(0,191,255)); tt.modifyImage(d, "人数:"+amount1, -30+(30*(3+job1.length())), y, new Color(210,105,30)); tt.modifyImage(d, "月薪:"+salary1, -10+(30*(6+job1.length()+amount1.length())), y, new Color(178,34,34)); y = y+25; tt.setFont(new Font("黑体",Font.PLAIN, 24)); if(num < 1 ) { System.out.println(num); tt.modifyImage(d, need1, -50, y+25,new Color(0,0,0)); }else { for(int i = 0;i<num;i++) { s1[i] = need1.substring(subindex, j); tt.modifyImage(d, s1[i], -50, y,new Color(0,0,0)); subindex=j; j+=40; y+=25; } if(strleth%40 != 0) { //System.out.println("不等于0"); s1[num] = need1.substring(num * 40); tt.modifyImage(d, s1[num], -50, y,new Color(0,0,0)); } } //tt.modifyImage(d, "岗位要求:"+need1, -50, y+25, new Color(0,0,0)); } } }
启动类：
package com.learning.www; import java.awt.Color;import java.awt.Font;import java.awt.GraphicsEnvironment;import java.awt.image.BufferedImage; import org.mybatis.spring.annotation.MapperScan;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.EnableAutoConfiguration;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cache.annotation.EnableCaching; import com.learning.www.utils.PrintImage;import com.learning.www.utils.PrintJobToImg; @SpringBootApplication@EnableAutoConfiguration@EnableCaching@MapperScan("com.learning.www.mapper")public class LearningApplication { public static void main(String[] args) { SpringApplication.run(LearningApplication.class, args); PrintImage tt = new PrintImage(); BufferedImage d = tt.loadImageLocal("D:\\test\\muban.jpg"); String title = "撒大大是多少有限公司"; int x = title.length() * 96; // 公司标题 72号字体==96px tt.setFont(new Font("造字工房力黑（非商用）常规体", Font.BOLD, 76)); //tt.modifyImage(d, title, (1920-x)/2-960, -420, new Color(65,105,225)); //tt.modifyShapImg(d, title, (1920-x)/2-960, -420); tt.modifyShapImg(d, title, (1920-x)/2, 130); //公司简介，限定字数 tt.setFont(new Font("黑体",Font.PLAIN, 30)); String str = "功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存" +"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存" +"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存" +"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"+"功能：可以实现在图片模板上写内容并保存"; System.out.println(str.length()); //计算字符串长度 int strleth=str.length(); //计算循环次数 int num = strleth/20; //字符串截取第一位 int subindex = 0; //字符串截取第二位 int j = 20; //距离y轴的位置 int y = -350; String[] s = new String[num+1]; if(num < 1 ) { System.out.println(num); tt.modifyImage(d, str, -830, y,new Color(0,0,0)); }else { for(int i = 0;i<num;i++) { s[i] = str.substring(subindex, j); tt.modifyImage(d, s[i], -830, y,new Color(0,0,0)); subindex=j; j+=20; y+=35; } if(strleth%20 != 0) { //System.out.println("不等于0"); s[num] = str.substring(num * 20); tt.modifyImage(d, s[num], -830, y,new Color(0,0,0)); } } // 公司岗位6个 String job1 = "普工"; String amount1 = "3人"; String salary1 = "4000元/月"; String need1 = "吃苦耐劳，具有专业的技术能力。吃苦耐劳，具有专业的技术能力。吃苦耐劳，具有专业的技术能力。吃苦耐劳，具有专业的技术能力。吃苦耐劳，具有专业的技术能力。" + "吃苦耐劳，具有专业的技术能力。"; y = -350; PrintJobToImg.printJobToImg(tt, d, job1, need1, amount1, salary1, y); PrintJobToImg.printJobToImg(tt, d, job1, need1, amount1, salary1, y+110); PrintJobToImg.printJobToImg(tt, d, job1, need1, amount1, salary1, y+220); PrintJobToImg.printJobToImg(tt, d, job1, need1, amount1, salary1, y+330); PrintJobToImg.printJobToImg(tt, d, job1, need1, amount1, salary1, y+440); PrintJobToImg.printJobToImg(tt, d, job1, need1, amount1, salary1, y+550);// tt.setFont(new Font("黑体",Font.PLAIN, 24));// if(null != job1 && !job1.equals("")) {// need1 = "岗位职责:"+need1;// strleth = need1.length()+5;// num = strleth/40;// subindex = 0;// j = 40;// y = -350;// String[] s1 = new String[num+1];// tt.modifyImage(d, "职位:"+job1, -50, y, new Color(0,191,255));// tt.modifyImage(d, "人数:"+amount1, -30+(30*(3+job1.length())), y, new Color(210,105,30));// tt.modifyImage(d, "月薪:"+salary1, -10+(30*(6+job1.length()+amount1.length())), y, new Color(178,34,34));// y = y+25;// if(num < 1 ) {// System.out.println(num);// tt.modifyImage(d, need1, -50, y+25,new Color(0,0,0));// }else {// for(int i = 0;i<num;i++) {// s1[i] = need1.substring(subindex, j);// tt.modifyImage(d, s1[i], -50, y,new Color(0,0,0));// subindex=j;// j+=40;// y+=25;// }// if(strleth%40 != 0) {// //System.out.println("不等于0");// s1[num] = need1.substring(num * 40);// tt.modifyImage(d, s1[num], -50, y,new Color(0,0,0));// }// }// //tt.modifyImage(d, "岗位要求:"+need1, -50, y+25, new Color(0,0,0));// } // 联系方式和抵地址 String name = "张先生"; String tel = "12334343443"; String company = "盐都区高新区振兴路汇鑫大厦"; tt.setFont(new Font("黑体",Font.BOLD, 40)); tt.modifyImage(d, name, -650, 360,new Color(0,0,0)); tt.modifyImage(d, tel, -450, 360,new Color(0,0,0)); tt.modifyImage(d, company, -650, 440,new Color(0,0,0)); //tt.modifyImage(d, str, -830, -100); tt.writeImageLocal("D:\\test\\cc.jpg", d); System.out.println("success"); System.out.println(s[0]); System.out.println(s[0].length()); GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); String[] fontList = ge.getAvailableFontFamilyNames(); for(int i=0;i<fontList.length;i++) { System.out.println("字体："+fontList[i]); } }}
实现效果:模板图片为：1920 x 1080 px。
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本文标题: java实现图片上插入文字并保存
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