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Java实现给图片添加水印

2012-02-16 18:13 736 查看
本门目录：

图片水印
文字水印
[一]、图片水印

Java代码 



package michael.io.image; 
 
import java.awt.AlphaComposite; 

import java.awt.Graphics2D; 

import java.awt.Image; 
import java.awt.RenderingHints; 

import java.awt.image.BufferedImage; 

import java.io.File; 
import java.io.FileInputStream; 

import java.io.FileOutputStream; 

import java.io.InputStream; 

import java.io.OutputStream; 

 
import javax.imageio.ImageIO; 

import javax.swing.ImageIcon; 

 
import com.sun.image.codec.jpeg.JPEGCodec; 

import com.sun.image.codec.jpeg.JPEGImageDecoder; 

import com.sun.image.codec.jpeg.JPEGImageEncoder; 

 
/**
* 图片水印
* @blog http://sjsky.iteye.com * @author Michael
*/ 
public class ImageMarkLogoByIcon { 

 
    /**
     * @param args
     */ 
    public static
void main(String[] args) { 
        String srcImgPath = "d:/test/michael/myblog_01.png"; 

        String iconPath = "d:/test/michael/blog_logo.png"; 

        String targerPath = "d:/test/michael/img_mark_icon.jpg"; 

        String targerPath2 = "d:/test/michael/img_mark_icon_rotate.jpg"; 

        // 给图片添加水印 
        ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath); 

        // 给图片添加水印,水印旋转-45 
        ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath2, 

                -45); 
 
    } 
 
    /**
     * 给图片添加水印
     * @param iconPath 水印图片路径
     * @param srcImgPath 源图片路径
     * @param targerPath 目标图片路径
     */ 
    public static
void markImageByIcon(String iconPath, String srcImgPath, 

            String targerPath) { 
        markImageByIcon(iconPath, srcImgPath, targerPath,
null); 
    } 
 
    /**
     * 给图片添加水印、可设置水印图片旋转角度
     * @param iconPath 水印图片路径
     * @param srcImgPath 源图片路径
     * @param targerPath 目标图片路径
     * @param degree 水印图片旋转角度
     */ 
    public static
void markImageByIcon(String iconPath, String srcImgPath, 

            String targerPath, Integer degree) { 
        OutputStream os = null; 

        try { 
            Image srcImg = ImageIO.read(new File(srcImgPath)); 

 
            BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null), 

                    srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB); 

 
            // 得到画笔对象 
            // Graphics g= buffImg.getGraphics(); 

            Graphics2D g = buffImg.createGraphics(); 
 
            // 设置对线段的锯齿状边缘处理 

            g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 

                    RenderingHints.VALUE_INTERPOLATION_BILINEAR); 

 
            g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg 

                    .getHeight(null), Image.SCALE_SMOOTH),
0, 0,
null); 
 
            if (null != degree) { 

                // 设置水印旋转 
                g.rotate(Math.toRadians(degree), 
                        (double) buffImg.getWidth() /
2, (double) buffImg 

                                .getHeight() / 2); 

            } 
 
            // 水印图象的路径 水印一般为gif或者png的，这样可设置透明度 

            ImageIcon imgIcon = new ImageIcon(iconPath); 

 
            // 得到Image对象。 
            Image img = imgIcon.getImage(); 
 
            float alpha = 0.5f;
// 透明度 
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 

                    alpha)); 
 
            // 表示水印图片的位置 
            g.drawImage(img, 150,
300, null); 

 
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER)); 

 
            g.dispose(); 
 
            os = new FileOutputStream(targerPath); 

 
            // 生成图片 
            ImageIO.write(buffImg, "JPG", os); 

 
            System.out.println("图片完成添加Icon印章。。。。。。"); 

        } catch (Exception e) { 

            e.printStackTrace(); 
        } finally { 
            try { 
                if (null != os) 

                    os.close(); 
            } catch (Exception e) { 

                e.printStackTrace(); 
            } 
        } 
    } 
} 

package michael.io.image;

import java.awt.AlphaComposite;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
* 图片水印
* @blog http://sjsky.iteye.com * @author Michael
*/
public class ImageMarkLogoByIcon {

/**
* @param args
*/
public static void main(String[] args) {
String srcImgPath = "d:/test/michael/myblog_01.png";
String iconPath = "d:/test/michael/blog_logo.png";
String targerPath = "d:/test/michael/img_mark_icon.jpg";
String targerPath2 = "d:/test/michael/img_mark_icon_rotate.jpg";
// 给图片添加水印
ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath);
// 给图片添加水印,水印旋转-45
ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath2,
-45);

}

/**
* 给图片添加水印
* @param iconPath 水印图片路径
* @param srcImgPath 源图片路径
* @param targerPath 目标图片路径
*/
public static void markImageByIcon(String iconPath, String srcImgPath,
String targerPath) {
markImageByIcon(iconPath, srcImgPath, targerPath, null);
}

/**
* 给图片添加水印、可设置水印图片旋转角度
* @param iconPath 水印图片路径
* @param srcImgPath 源图片路径
* @param targerPath 目标图片路径
* @param degree 水印图片旋转角度
*/
public static void markImageByIcon(String iconPath, String srcImgPath,
String targerPath, Integer degree) {
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));

BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),
srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);

// 得到画笔对象
// Graphics g= buffImg.getGraphics();
Graphics2D g = buffImg.createGraphics();

// 设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg
.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);

if (null != degree) {
// 设置水印旋转
g.rotate(Math.toRadians(degree),
(double) buffImg.getWidth() / 2, (double) buffImg
.getHeight() / 2);
}

// 水印图象的路径 水印一般为gif或者png的，这样可设置透明度
ImageIcon imgIcon = new ImageIcon(iconPath);

// 得到Image对象。
Image img = imgIcon.getImage();

float alpha = 0.5f; // 透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));

// 表示水印图片的位置
g.drawImage(img, 150, 300, null);

g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));

g.dispose();

os = new FileOutputStream(targerPath);

// 生成图片
ImageIO.write(buffImg, "JPG", os);

System.out.println("图片完成添加Icon印章。。。。。。");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}

原始图片myblog_01.jpg:



水印图片blog_logo.png：



添加水印后的效果图：



水印图标旋转的效果图：



 

[二]、文字水印

Java代码 



package michael.io.image; 
 
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.InputStream; 

import java.io.OutputStream; 

 
import javax.imageio.ImageIO; 

 
/**
* 文字水印
* @blog http://sjsky.iteye.com * @author Michael
*/ 
public class ImageMarkLogoByText { 

 
    /**
     * @param args
     */ 
    public static
void main(String[] args) { 
        String srcImgPath = "d:/test/michael/myblog_01.jpg"; 

        String logoText = "[ 测试文字水印 http://sjsky.iteye.com ]"; 

        String targerPath = "d:/test/michael/img_mark_text.jpg"; 

 
        String targerPath2 = "d:/test/michael/img_mark_text_rotate.jpg"; 

 
        // 给图片添加水印 
        ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath); 

 
        // 给图片添加水印,水印旋转-45 
        ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath2, -45); 

    } 
 
    /**
     * 给图片添加水印
     * @param logoText
     * @param srcImgPath
     * @param targerPath
     */ 
    public static
void markByText(String logoText, String srcImgPath, 

            String targerPath) { 
        markByText(logoText, srcImgPath, targerPath,
null); 
    } 
 
    /**
     * 给图片添加水印、可设置水印的旋转角度
     * @param logoText
     * @param srcImgPath
     * @param targerPath
     * @param degree
     */ 
    public static
void markByText(String logoText, String srcImgPath, 

            String targerPath, Integer degree) { 
        // 主图片的路径 
        InputStream is = null; 

        OutputStream os = null; 

        try { 
            Image srcImg = ImageIO.read(new File(srcImgPath)); 

 
            BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null), 

                    srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB); 

 
            // 得到画笔对象 
            // Graphics g= buffImg.getGraphics(); 

            Graphics2D g = buffImg.createGraphics(); 
 
            // 设置对线段的锯齿状边缘处理 

            g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 

                    RenderingHints.VALUE_INTERPOLATION_BILINEAR); 

 
            g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg 

                    .getHeight(null), Image.SCALE_SMOOTH),
0, 0,
null); 
 
            if (null != degree) { 

                // 设置水印旋转 
                g.rotate(Math.toRadians(degree), 
                        (double) buffImg.getWidth() /
2, (double) buffImg 

                                .getHeight() / 2); 

            } 
 
            // 设置颜色 
            g.setColor(Color.red); 
 
            // 设置 Font 
            g.setFont(new Font("宋体", Font.BOLD,
30)); 
 
            float alpha = 0.5f; 

            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 

                    alpha)); 
 
            // 第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y) . 

            g.drawString(logoText, 150,
300); 
 
            g.dispose(); 
 
            os = new FileOutputStream(targerPath); 

 
            // 生成图片 
            ImageIO.write(buffImg, "JPG", os); 

 
            System.out.println("图片完成添加文字印章。。。。。。"); 

        } catch (Exception e) { 

            e.printStackTrace(); 
        } finally { 
            try { 
                if (null != is) 

                    is.close(); 
            } catch (Exception e) { 

                e.printStackTrace(); 
            } 
            try { 
                if (null != os) 

                    os.close(); 
            } catch (Exception e) { 

                e.printStackTrace(); 
            } 
        } 
    } 
} 

package michael.io.image;

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.InputStream;
import java.io.OutputStream;

import javax.imageio.ImageIO;

/**
* 文字水印
* @blog http://sjsky.iteye.com * @author Michael
*/
public class ImageMarkLogoByText {

/**
* @param args
*/
public static void main(String[] args) {
String srcImgPath = "d:/test/michael/myblog_01.jpg";
String logoText = "[ 测试文字水印 http://sjsky.iteye.com ]";
String targerPath = "d:/test/michael/img_mark_text.jpg";

String targerPath2 = "d:/test/michael/img_mark_text_rotate.jpg";

// 给图片添加水印
ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath);

// 给图片添加水印,水印旋转-45
ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath2, -45);
}

/**
* 给图片添加水印
* @param logoText
* @param srcImgPath
* @param targerPath
*/
public static void markByText(String logoText, String srcImgPath,
String targerPath) {
markByText(logoText, srcImgPath, targerPath, null);
}

/**
* 给图片添加水印、可设置水印的旋转角度
* @param logoText
* @param srcImgPath
* @param targerPath
* @param degree
*/
public static void markByText(String logoText, String srcImgPath,
String targerPath, Integer degree) {
// 主图片的路径
InputStream is = null;
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));

BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),
srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);

// 得到画笔对象
// Graphics g= buffImg.getGraphics();
Graphics2D g = buffImg.createGraphics();

// 设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg
.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);

if (null != degree) {
// 设置水印旋转
g.rotate(Math.toRadians(degree),
(double) buffImg.getWidth() / 2, (double) buffImg
.getHeight() / 2);
}

// 设置颜色
g.setColor(Color.red);

// 设置 Font
g.setFont(new Font("宋体", Font.BOLD, 30));

float alpha = 0.5f;
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));

// 第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y) .
g.drawString(logoText, 150, 300);

g.dispose();

os = new FileOutputStream(targerPath);

// 生成图片
ImageIO.write(buffImg, "JPG", os);

System.out.println("图片完成添加文字印章。。。。。。");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != is)
is.close();
} catch (Exception e) {
e.printStackTrace();
}
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}

 

 

 
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