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 ;
    }
}

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 );
    }
}

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); } }

转自Java进行时【http://www.blogjava.net/davma/archive/2007/11/29/163969.html】