img

package com.cp.img;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

import javax.imageio.ImageIO;

/**
 * 图片水印
 * 
 * @author Thinkpad
 *
 */
public class ImgWatermark {

	private SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm");
	private SimpleDateFormat fmtRname = new SimpleDateFormat("yyyyMMdd_HHmmss");
	String dir = "C:\\Users\\Thinkpad\\Desktop\\新建文件夹";

	public static void main(String[] args) throws FileNotFoundException, IOException {
		ImgWatermark img = new ImgWatermark();
		for (File f : img.scan(img.dir)) {
			img.print(f);
		}
	}

	public List<File> scan(String path) {
		List<File> list = new ArrayList<File>();
		File file = new File(path);
		if (!file.exists())
			return list;
		if (file.isDirectory()) {
			for (File f : file.listFiles()) {
				list.add(f);
			}
		} else {
			list.add(file);
		}
		return list;
	}

	public void print(File file) throws FileNotFoundException, IOException {
		BufferedImage img = ImageIO.read(file);
		int w = img.getWidth(), h = img.getHeight();
		int x = (int) (w * 0.65), y = (int) (h * (w > h ? 0.9 : 0.95));
		Graphics g = img.getGraphics();
		g.setColor(Color.RED);// Arial
		g.setFont(new Font("汉仪雪君体简", Font.BOLD, w / 32));
		long time=file.lastModified();
		g.drawString(fmt.format(time), x, y);
		ImageIO.write(img, file.getAbsolutePath().substring(file.getAbsolutePath().lastIndexOf(".") + 1), file);
		file.setLastModified(time);
		System.out.println(file.getAbsolutePath() + ",处理完成");
	}

}

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