使用java实现图片的合成

1、保存图片void createImage(String fileLocation) { try { FileOutputStream fos = new FileOutputStream(fileLocation); BufferedOutputStream bos = new BufferedOutputStream(fos); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos); encoder.encode(image); bos.close(); } catch (Exception e) { e.printStackTrace(); } }

2、将两张图片生成一张图片public void graphicsGeneration(String name, String id荑樊综鲶, String classname, String imgurl,String qrimg) {int imageWidth = 295;// 图片的宽度int imageHeight =333;// 图片的高度image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);Graphics graphics = image.getGraphics();graphics.setColor(Color.WHITE);graphics.fillRect(0, 0, imageWidth, imageHeight);graphics.setColor(Color.BLACK);graphics.drawString(name, 80, 220);graphics.drawString(id, 130,260);graphics.drawString(classname,130,290);// 改成这样:BufferedImage bimg = null;try {bimg = javax.imageio.ImageIO.read(new java.io.File(imgurl));} catch (Exception e) {}if (bimg != null){graphics.drawImage(bimg,80, 20, null);}BufferedImage qimg =null;try {qimg = javax.imageio.ImageIO.read(new java.io.File(qrimg));} catch (Exception e) {}if (qimg != null){graphics.drawImage(qimg,20, 220, null);}graphics.dispose();createImage("E:\\55.jpg");}

3、将合成的图片批量合成到一张打印图片上public void gG(String职邗珩垃[] imgurl) { int imageWidth =1240;// 图片的宽度 int im锾攒揉敫ageHeight =1754;// 图片的高度 image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB); Graphics graphics = image.getGraphics(); graphics.setColor(Color.WHITE); graphics.fillRect(0, 0, imageWidth, imageHeight); graphics.setColor(Color.BLACK); int i=0; int j=0; int p=0; for (String img : imgurl) { BufferedImage bimg = null; try { bimg = javax.imageio.ImageIO.read(new java.io.File(img)); } catch (Exception e) { } if (bimg != null){ graphics.drawImage(bimg,20+i, 20+p, null); } i=i+320; j++; if(j%4==0){ p=p+350; i=0; } } graphics.dispose(); createImage("E:\\100.jpg"); }

4、除了可以直接将图片合成到打印图片上，还可排版到word文档中public static void createDoc(String[] str) throws Exception{ //创建word文档,并设置纸张的大小 String fileName="E:/照片.doc"; FileOutputStream fos = new FileOutputStream(fileName); Document document = new Document(PageSize.A4); RtfWriter2.getInstance(document,fos); document.open(); Table table = new Table(4); table.setBorderWidth(0); for(int i=0;i<str.length;i++){ //添加图片 File file = new File(str[i]); Image img = null; if(file.exists()) { img= Image.getInstance(str[i]); img.scaleAbsolute(100, 100); table.addCell(new Cell(img)); } } document.add(table); document.close(); }

5、在main方法里执行public static void main(String[] args) { ChartGraphics cg = new ChartGraphics(); try { //cg.graphicsGeneration("1478654", "沈22", "维修", "E:/3.jpg", "E:/5.gif"); String[] str = new String[40]; for (int i=0;i<str.length;i++) { str[i]="E:\\55.jpg"; } //cg.gG(str); createDoc(str); System.out.println("success"); } catch (Exception e) { e.printStackTrace(); } }