Java处理图片

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package cn.com.weijiazhi.utils;

import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

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

public final class ImageUtils {
	public ImageUtils() {

	}

	/**
	 * 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 outImg,
			String fontName, 
			int fontStyle, 
			Color color, 
			int fontSize, 
			int x,
			int y,
			float qualNum,
			boolean antialiasOn) {
		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);
			
			Graphics2D g = image.createGraphics();
			g.drawImage(src, 0, 0, wideth, height, null);
			g.setColor(color);
			g.setFont(new Font(fontName, fontStyle, fontSize));
			if(antialiasOn) {
				g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
			}
			g.drawString(pressText, wideth - fontSize - x, height - fontSize/ 2 - y);
			g.dispose();
			
			FileOutputStream out = new FileOutputStream(outImg);
			JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
			JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(image);
            param.setQuality(qualNum, true);
			encoder.encode(image, param);
			out.close();
		} catch (Exception e) {
			System.out.println(e);
		}
	}
}