[转]给网站上传的图片盖章
/************************************************* <p>java对图片的操作(只能使用jpg)</p>* 对图片的签章<br>* 对图片的缩图<br>* <p>Title:java对图片的操作(只能使用jpg)</p>* <p>CreateData: 2004-12-2</p>* <p>Description:</p>* <p>Copyright: Copyright (c) 2004</p>* @author 王凯* @version 1.0***********************************************/package com.cn.wangk.test;import java.io.*;import com.sun.image.codec.jpeg.*;//sun公司仅提供了jpg图片文件的编码apiimport java.awt.Font;import java.awt.Graphics;import java.awt.Image;import java.awt.geom.AffineTransform;import java.awt.image.AffineTransformOp;import java.awt.image.BufferedImage;import java.awt.image.ImageObserver;import javax.imageio.ImageIO;/*** @author wangkai*/public class Test { /** * */ public Test() { try { //生成以后新的图片地址 File fo = new File("c:\\4.jpg"); //读取的图片文件 String imagePath = "C:\\Documents and Settings\\Administrator" + "\\My Documents\\My Pictures\\1.jpg"; //盖章的图片文件 String toimagepth = "C:\\1.jpg"; //得到图片的文件流 InputStream imageIn; imageIn = new FileInputStream(new File(imagePath)); //得到输入的编码器，将文件流进行jpg格式编码 JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(imageIn); //得到编码后的图片对象 BufferedImage image = decoder.decodeAsBufferedImage(); Graphics g = image.getGraphics(); try { InputStream imageIn2 = null; imageIn2 = new FileInputStream(new File(toimagepth)); //得到输入的编码器，将文件流进行jpg格式编码 JPEGImageDecoder decoder2 = JPEGCodec .createJPEGDecoder(imageIn2); //得到编码后的图片对象 BufferedImage image2 = decoder2.decodeAsBufferedImage(); //加盖图片章 ImageObserver obser = null; int x = image.getWidth() - image2.getWidth(); int y = image.getHeight() - image2.getHeight(); g.drawImage(image2, x, y, obser); } catch (FileNotFoundException e) { //打开文件失败，表示章图片不存在，这时候直接加盖文件章（签名） g.setFont(new Font("宋体", Font.PLAIN, 18)); g.drawString("秋水工作室", image.getWidth() - 100, image.getHeight() - 20); g.drawString("water_wang@xs.zj.cn", image.getWidth() - 180, image.getHeight() - 10); } g.dispose(); ImageIO.write(image, "jpeg", fo); System.out.println("ok"); } catch (FileNotFoundException e) { // 自动生成 catch 块 e.printStackTrace(); } catch (ImageFormatException e) { // 自动生成 catch 块 e.printStackTrace(); } catch (IOException e) { // 自动生成 catch 块 e.printStackTrace(); } } public static void saveFixedBoundIcon(File imageFile, int height, int width) throws Exception { double Ratio = 0.0; if (imageFile == null || !imageFile.isFile()) throw new Exception(imageFile + "找不到指定的文件!"); String filePath = imageFile.getPath(); BufferedImage Bi = ImageIO.read(imageFile); if ((Bi.getHeight() > height) || (Bi.getWidth() > width)) { if (Bi.getHeight() > Bi.getWidth()) { Ratio = (new Integer(height)).doubleValue() / Bi.getHeight(); } else { Ratio = (new Integer(width)).doubleValue() / Bi.getWidth(); } File savefile = new File(filePath + "_" + height + "_" + width + ".jpg"); Image Itemp = Bi.getScaledInstance(width, height, Image.SCALE_SMOOTH); AffineTransformOp op = new AffineTransformOp(AffineTransform .getScaleInstance(Ratio, Ratio), null); Itemp = op.filter(Bi, null); try { ImageIO.write((BufferedImage) Itemp, "jpeg", savefile); } catch (Exception ex) { } } } public static void main(String[] args) { // Test ts = new Test(); try { Test.saveFixedBoundIcon(new File( "C:\\test.jpg"), 200, 200); } catch (Exception e) { // 自动生成 catch 块 e.printStackTrace(); } }}?