Java实现给图片添加水印

package com.ccniit.url;import java.awt.*;import java.awt.image.*;import java.io.*;import javax.swing.*;import com.sun.image.codec.jpeg.*;public class WaterMark{/** 给图片添加水印* @param filePath 需要添加水印的图片的路径* @param markContent 水印的文字* @param markContentColor 水印文字的颜色* @param qualNum 图片质量* @return*/public boolean createMark(String filePath,String markContent,Color markContentColor,float qualNum,String watermark){ImageIcon imgIcon=new ImageIcon(filePath);Image theImg =imgIcon.getImage();int width=theImg.getWidth(null);int height= theImg.getHeight(null);//ImageIcon waterIcon=new ImageIcon(watermark);//Image waterImg =waterIcon.getImage();BufferedImage bimage = new BufferedImage(width,height, BufferedImage.TYPE_INT_RGB);Graphics2D g=bimage.createGraphics();g.setColor(markContentColor);g.setBackground(Color.white);g.drawImage(theImg, 0, 0, null );//g.drawImage(waterImg, width*2, height, null );g.drawString(markContent,width-100,height-30); //添加水印的文字和设置水印文字出现的内容g.dispose();try{FileOutputStream out=new FileOutputStream(filePath);JPEGImageEncoder encoder =JPEGCodec.createJPEGEncoder(out);JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage);param.setQuality(qualNum, true);encoder.encode(bimage, param);out.close();}catch(Exception e)                {                   return false;                 }return true;}public static void main(String arg[])   {WaterMark wk=new WaterMark();if(wk.createMark("D:\\1.jpg","Welcome!",Color.WHITE,70f,"")){  System.out.println("success");}else{  System.out.println("wrong！");}}}