java-图片加水印及缩放

package com.gwi.util;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
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 kiosk.util.KDate;

import org.apache.log4j.Logger;


public class SealImgSyntheticUtil {
	private static Logger logger = Logger.getLogger(SealImgSyntheticUtil.class);
	public static final int IMG_WIDTH = 180;//缩放图片宽
	public static final int IMG_HEIGHT = 180;//缩放图片高
	public static final String IMG_TYPE = "jpg";
	
	/**
	 * 图片加文字
	 * @param srcImgPath 原图路径
	 * @param tarImgPath 新图路径
	 * @param waterMarkContent 水印内容
	 * @param markContentColor 水印颜色
	 * @param font 字体
	 * @param x 水印位置x
	 * @param y 水印位置y
	 */
	public void addWaterMark(String srcImgPath, String tarImgPath,String waterMarkContent, Color markContentColor, Font font,int x,int y,String imageType) {
		try {
			//文件转化为图片
			File srcImgFile = new File(srcImgPath);
			Image srcImg = ImageIO.read(srcImgFile);
			int srcImgWidth = srcImg.getWidth(null);
			int srcImgHeight = srcImg.getHeight(null);
			//设置图片属性
			BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight,BufferedImage.TYPE_INT_RGB);
			Graphics2D g = bufImg.createGraphics();
			g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);
			g.setColor(markContentColor);
			g.setFont(font);
            //水印位置设置
			g.drawString(waterMarkContent, x, y);
			g.dispose();
			//图片输出
			writeImage(tarImgPath,bufImg, imageType);
		} catch (Exception e) {
			logger.error("合成电子印章错误：", e);
		}
	}



	/**
	 * 图片缩小
	 * @param originalImage 原图
	 * @param type 
	 * @return
	 */
	public void resizeImage(BufferedImage originalImage,String imageType,int type,String tarImgPath) {		
		try {
			BufferedImage resizedImage = new BufferedImage(IMG_WIDTH, IMG_HEIGHT,type);
			Graphics2D g = resizedImage.createGraphics();
			g.drawImage(originalImage, 0, 0, IMG_WIDTH, IMG_HEIGHT, null);
			g.dispose();
			writeImage(tarImgPath,resizedImage, imageType);
		} catch (Exception e) {
			logger.error("合成电子印章错误：", e);
		}
	}
	
	/**
	 * 输出图片
	 * @param tarImgPath 图片存放位置
	 * @param bufImg 
	 * @param imageType
	 */
	public static void writeImage(String tarImgPath,BufferedImage bufImg,String imageType){
		FileOutputStream outImgStream;
		try {
			outImgStream = new FileOutputStream(tarImgPath);
			ImageIO.write(bufImg, imageType, outImgStream);			
			outImgStream.flush();
			outImgStream.close();
		} catch (Exception e) {
			logger.error("合成电子印章错误：", e);
		}
		
	}
	
	public static void main(String[] args) {
		try {
			Font font = new Font("微软雅黑", Font.PLAIN, 50);// 水印字体
			String srcImgPath = "D:\\y.jpg"; // 源图片地址
			String tarImgPath = "D:\\t.jpg"; // 待存储的地址
			String tarImgPath2 = "D:\\ target.jpg"; //缩放图片地址
			String waterMarkContent =KDate.getDateTime(null,"yyyyMMdd");// 水印内容
			
			Color color = new Color(255, 0, 0, 255);
			new SealImgSyntheticUtil().addWaterMark(srcImgPath, tarImgPath,waterMarkContent, color, font,110,250,IMG_TYPE);
			
			File file = new File(tarImgPath);
			BufferedImage originalImage = ImageIO.read(file);
			int type = originalImage.getType() == 0 ? BufferedImage.TYPE_INT_ARGB : originalImage.getType();
			new SealImgSyntheticUtil().resizeImage(originalImage, IMG_TYPE,type,tarImgPath2);
			
		} catch (IOException e) {
			System.out.println(e);
		}
	}
}

 

效果：