使用Java添加图片水印和文字水印

方法一：

 import java.awt.*;
 import java.awt.image.*;
 import java.io.*;
 import javax.swing.*;
 import com.sun.image.codec.jpeg.*;
 public class WaterSet {
     /** *//**
      * 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) {
         ImageIcon imgIcon = new ImageIcon(filePath);
         Image theImg = imgIcon.getImage();
         int width = theImg.getWidth(null);
         int height = theImg.getHeight(null);
         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.drawString(markContent, width / 5, height / 5); // 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;
     }
 }

 

方法二：添加图片水印和文字水印两种，水印图片可以是GIF,PNG透明的文件，我一般采用的是PNG的，因为它的质量和GIF相比要高一些。

 import java.awt.Color;
 import java.awt.Font;
 import java.awt.Graphics;
 import java.awt.Image;
 import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.FileOutputStream;
 import javax.imageio.ImageIO;
 import com.sun.image.codec.jpeg.JPEGCodec;
 import com.sun.image.codec.jpeg.JPEGImageEncoder;
 public final class ImageUtils {
     public ImageUtils() {
     }
     /**//*
      * public final static String getPressImgPath() { return ApplicationContext
      * .getRealPath("/template/data/util/shuiyin.gif"); }
      */
     /** *//**
      * 把图片印刷到图片上
      *
      * @param pressImg --
      *            水印文件
      * @param targetImg --
      *            目标文件
      * @param x
      *            --x坐标
      * @param y
      *            --y坐标
      */
     public final static void pressImage(String pressImg, String targetImg,
             int x, int y) {
         try {
             //目标文件
             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) / 2,
                     (height - height_biao) / 2, wideth_biao, height_biao, null);
             //水印文件结束
             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 fontName, int fontStyle, int color, int fontSize, 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);
             // String s="www.qhd.com.cn";
             g.setColor(Color.RED);
             g.setFont(new Font(fontName, fontStyle, fontSize));
             g.drawString(pressText, wideth - fontSize - x, height - fontSize
                     / 2 - y);
             g.dispose();
             FileOutputStream out = new FileOutputStream(targetImg);
             JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
             encoder.encode(image);
             out.close();
         } catch (Exception e) {
             System.out.println(e);
         }
     }
     public static void main(String[] args) {
         pressImage("F:/logo.png",          "F:/123.jpg", 0, 0);
     }
 }