imageutils.java

使用WEBWORK,SPRING,HIBERNATE编写的简单的添加

/**
 *文件功能： 
 */
package com.common.util;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;

import org.apache.commons.io.FileUtils;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
 * @作者 徐建协
 * @日期 2008-3-18
 */
public class ImageUtils {
	public final static String getPressImgPath() {
		return "/template/data/util/shuiyin.gif";
	}

	/**
	 * 把图片印刷到图片上
	 * 
	 * @param pressImg --
	 *            水印文件
	 * @param targetImg --
	 *            目标文件
	 * @param x
	 * @param y
	 */
	public final static void pressImage(String pressImg, String targetImg,
			int x, int y) {
		try {
			File _file = new File(targetImg);
			Image src = ImageIO.read(_file);
			int wideth = src.getWidth(null);
			int height = src.getHeight(null);
			BufferedImage image = new BufferedImage(wideth, height,
					BufferedImage.TYPE_INT_RGB);
			Graphics g = image.createGraphics();
			g.drawImage(src, 0, 0, wideth, height, null);

			// 水印文件
			File _filebiao = new File(pressImg);
			Image src_biao = ImageIO.read(_filebiao);
			int wideth_biao = src_biao.getWidth(null);
			int height_biao = src_biao.getHeight(null);
			g.drawImage(src_biao, wideth - wideth_biao - x, height
					- height_biao - y, wideth_biao, height_biao, null);
			// /
			g.dispose();
			FileOutputStream out = new FileOutputStream(targetImg);
			JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
			encoder.encode(image);
			out.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 打印文字水印图片
	 * 
	 * @param pressText
	 *            --文字
	 * @param targetImg --
	 *            目标图片
	 * @param fontName --
	 *            字体名
	 * @param fontStyle --
	 *            字体样式
	 * @param color --
	 *            字体颜色
	 * @param fontSize --
	 *            字体大小
	 * @param x --
	 *            偏移量
	 * @param y
	 */

	public static void pressText(String pressText, String targetImg,
			String fontName, int fontStyle, int color, int fontSize, int x,
			int y) {
		try {
			File _file = new File(targetImg);
			Image src = ImageIO.read(_file);
			int wideth = src.getWidth(null);
			int height = src.getHeight(null);
			BufferedImage image = new BufferedImage(wideth, height,
					BufferedImage.TYPE_INT_RGB);
			Graphics g = image.createGraphics();
			g.drawImage(src, 0, 0, wideth, height, null);
			// String s="www.qhd.com.cn";
			g.setColor(Color.RED);
			g.setFont(new Font(fontName, fontStyle, fontSize));
			g.drawString(pressText, wideth - fontSize - x, height - fontSize
					/ 2 - y);
			g.dispose();
			FileOutputStream out = new FileOutputStream(targetImg);
			JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
			encoder.encode(image);
			out.close();
		} catch (Exception e) {
			System.out.println(e);
		}
	}

	public static void reduceImg(String imgsrc, String imgdist, int widthdist,
			int heightdist) {
		try {
			File srcfile = new File(imgsrc);
			if (!srcfile.exists()) {
				return;
			}
			Image src = javax.imageio.ImageIO.read(srcfile);
			int width = src.getWidth(null);
			int height = src.getHeight(null);

			if (width <= widthdist && height <= heightdist) {
				// SysUtil.cpoyFile(imgsrc, imgdist);
				FileUtils.copyFile(new File(imgsrc), new File(imgdist));
				return;
			}

			// 宽度除以高度的比例
			float wh = (float) width / (float) height;

			if (wh > 1) {
				float tmp_heigth = (float) widthdist / wh;
				BufferedImage tag = new BufferedImage(widthdist,
						(int) tmp_heigth, BufferedImage.TYPE_INT_RGB);
				tag.getGraphics().drawImage(src, 0, 0, widthdist,
						(int) tmp_heigth, null);
				FileOutputStream out = new FileOutputStream(imgdist);
				JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
				encoder.encode(tag);
				out.close();
			} else {
				float tmp_width = (float) heightdist * wh;
				BufferedImage tag = new BufferedImage((int) tmp_width,
						heightdist, BufferedImage.TYPE_INT_RGB);
				tag.getGraphics().drawImage(src, 0, 0, (int) tmp_width,
						heightdist, null);
				FileOutputStream out = new FileOutputStream(imgdist);
				JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
				encoder.encode(tag);
				out.close();

			}
		} catch (IOException ex) {

		}
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//reduceImg("c:/gs.jpg", "c:/gs3.jpg", 400,400);
		pressText("www.fox.com","c:/gs.jpg","宋体",20,29,100,800,800);

	}

}