Java为图片添加文字或图片水印

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
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 java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
public class Main {
	public static void main(String[] args) throws IOException {
		Font font = new Font("04b_08", Font.PLAIN, 30);//字体
        String sourceImg="D:\\test\\123.jpg"; //源图片地址
        String targetImg="D:\\test\\watermark\\123.jpg"; //新存储的地址
        String watermark="图片出处:www.baidu.com";//水印内容
        String watermarkUrl="D:\\test\\zy.png";
        Color color=new Color(255,255,255,128);
        addWatermark(sourceImg, targetImg,watermark, color,font);
        markImgMark(watermarkUrl,sourceImg,targetImg);
	}
	
	/**
	 * 为图片添加图片水印
	 * @param watermarkUrl 原图
	 * @param source 水印图片
	 * @param output 制作完成的图片
	 * @return
	 * @throws