学步园

本门目录：

• 图片水印
• 文字水印

[一]、图片水印

Java代码 

1. package michael.io.image; 
2.  
3. import java.awt.AlphaComposite; 
   
4. import java.awt.Graphics2D; 
   
5. import java.awt.Image; 
6. import java.awt.RenderingHints; 
   
7. import java.awt.image.BufferedImage; 
   
8. import java.io.File; 
9. import java.io.FileInputStream; 
   
10. import java.io.FileOutputStream; 
    
11. import java.io.InputStream; 
    
12. import java.io.OutputStream; 
    
13.  
14. import javax.imageio.ImageIO; 
    
15. import javax.swing.ImageIcon; 
    
16.  
17. import com.sun.image.codec.jpeg.JPEGCodec; 
    
18. import com.sun.image.codec.jpeg.JPEGImageDecoder; 
    
19. import com.sun.image.codec.jpeg.JPEGImageEncoder; 
    
20.  
21. /**
22. * 图片水印
23. * @blog http://sjsky.iteye.com
24. * @author Michael
25. */ 
26. public class ImageMarkLogoByIcon { 
    
27.  
28.     /**
29.      * @param args
30.      */ 
31.     public static
    void main(String[] args) { 
32.         String srcImgPath = "d:/test/michael/myblog_01.png"; 
    
33.         String iconPath = "d:/test/michael/blog_logo.png"; 
    
34.         String targerPath = "d:/test/michael/img_mark_icon.jpg"; 
    
35.         String targerPath2 = "d:/test/michael/img_mark_icon_rotate.jpg"; 
    
36.         // 给图片添加水印 
37.         ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath); 
    
38.         // 给图片添加水印,水印旋转-45 
39.         ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath2, 
    
40.                 -45); 
41.  
42.     } 
43.  
44.     /**
45.      * 给图片添加水印
46.      * @param iconPath 水印图片路径
47.      * @param srcImgPath 源图片路径
48.      * @param targerPath 目标图片路径
49.      */ 
50.     public static
    void markImageByIcon(String iconPath, String srcImgPath, 
    
51.             String targerPath) { 
52.         markImageByIcon(iconPath, srcImgPath, targerPath,
    null); 
53.     } 
54.  
55.     /**
56.      * 给图片添加水印、可设置水印图片旋转角度
57.      * @param iconPath 水印图片路径
58.      * @param srcImgPath 源图片路径
59.      * @param targerPath 目标图片路径
60.      * @param degree 水印图片旋转角度
61.      */ 
62.     public static
    void markImageByIcon(String iconPath, String srcImgPath, 
    
63.             String targerPath, Integer degree) { 
64.         OutputStream os = null; 
    
65.         try { 
66.             Image srcImg = ImageIO.read(new File(srcImgPath)); 
    
67.  
68.             BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null), 
    
69.                     srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB); 
    
70.  
71.             // 得到画笔对象 
72.             // Graphics g= buffImg.getGraphics(); 
    
73.             Graphics2D g = buffImg.createGraphics(); 
74.  
75.             // 设置对线段的锯齿状边缘处理 
    
76.             g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
77.                     RenderingHints.VALUE_INTERPOLATION_BILINEAR); 
78.  
79.             g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg 
    
80.                     .getHeight(null), Image.SCALE_SMOOTH),
    0, 0,
    null); 
81.  
82.             if (null != degree) { 
    
83.                 // 设置水印旋转 
84.                 g.rotate(Math.toRadians(degree), 
85.                         (double) buffImg.getWidth() /
    2, (double) buffImg 
    
86.                                 .getHeight() / 2); 
    
87.             } 
88.  
89.             // 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 
    
90.             ImageIcon imgIcon = new ImageIcon(iconPath); 
    
91.  
92.             // 得到Image对象。 
93.             Image img = imgIcon.getImage(); 
94.  
95.             float alpha = 0.5f;
    // 透明度 
96.             g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 
    
97.                     alpha)); 
98.  
99.             // 表示水印图片的位置 
100.             g.drawImage(img, 150,
     300, null); 
     
101.  
102.             g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER)); 
     
103.  
104.             g.dispose(); 
105.  
106.             os = new FileOutputStream(targerPath); 
     
107.  
108.             // 生成图片 
109.             ImageIO.write(buffImg, "JPG", os); 
     
110.  
111.             System.out.println("图片完成添加Icon印章。。。。。。"); 
     
112.         } catch (Exception e) { 
     
113.             e.printStackTrace(); 
114.         } finally { 
115.             try { 
116.                 if (null != os) 
     
117.                     os.close(); 
118.             } catch (Exception e) { 
     
119.                 e.printStackTrace(); 
120.             } 
121.         } 
122.     } 
123. } 

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 

1. package michael.io.image; 
2.  
3. import java.awt.AlphaComposite; 
   
4. import java.awt.Color; 
5. import java.awt.Font; 
6. import java.awt.Graphics2D; 
   
7. import java.awt.Image; 
8. import java.awt.RenderingHints; 
   
9. import java.awt.image.BufferedImage; 
   
10. import java.io.File; 
11. import java.io.FileOutputStream; 
    
12. import java.io.InputStream; 
    
13. import java.io.OutputStream; 
    
14.  
15. import javax.imageio.ImageIO; 
    
16.  
17. /**
18. * 文字水印
19. * @blog http://sjsky.iteye.com
20. * @author Michael
21. */ 
22. public class ImageMarkLogoByText { 
    
23.  
24.     /**
25.      * @param args
26.      */ 
27.     public static
    void main(String[] args) { 
28.         String srcImgPath = "d:/test/michael/myblog_01.jpg"; 
    
29.         String logoText = "[ 测试文字水印 http://sjsky.iteye.com ]"; 
    
30.         String targerPath = "d:/test/michael/img_mark_text.jpg"; 
    
31.  
32.         String targerPath2 = "d:/test/michael/img_mark_text_rotate.jpg"; 
    
33.  
34.         // 给图片添加水印 
35.         ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath); 
    
36.  
37.         // 给图片添加水印,水印旋转-45 
38.         ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath2, -45); 
    
39.     } 
40.  
41.     /**
42.      * 给图片添加水印
43.      * @param logoText
44.      * @param srcImgPath
45.      * @param targerPath
46.      */ 
47.     public static
    void markByText(String logoText, String srcImgPath, 
    
48.             String targerPath) { 
49.         markByText(logoText, srcImgPath, targerPath,
    null); 
50.     } 
51.  
52.     /**
53.      * 给图片添加水印、可设置水印的旋转角度
54.      * @param logoText
55.      * @param srcImgPath
56.      * @param targerPath
57.      * @param degree
58.      */ 
59.     public static
    void markByText(String logoText, String srcImgPath, 
    
60.             String targerPath, Integer degree) { 
61.         // 主图片的路径 
62.         InputStream is = null; 
    
63.         OutputStream os = null; 
    
64.         try { 
65.             Image srcImg = ImageIO.read(new File(srcImgPath)); 
    
66.  
67.             BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null), 
    
68.                     srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB); 
    
69.  
70.             // 得到画笔对象 
71.             // Graphics g= buffImg.getGraphics(); 
    
72.             Graphics2D g = buffImg.createGraphics(); 
73.  
74.             // 设置对线段的锯齿状边缘处理 
    
75.             g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
76.                     RenderingHints.VALUE_INTERPOLATION_BILINEAR); 
77.  
78.             g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg 
    
79.                     .getHeight(null), Image.SCALE_SMOOTH),
    0, 0,
    null); 
80.  
81.             if (null != degree) { 
    
82.                 // 设置水印旋转 
83.                 g.rotate(Math.toRadians(degree), 
84.                         (double) buffImg.getWidth() /
    2, (double) buffImg 
    
85.                                 .getHeight() / 2); 
    
86.             } 
87.  
88.             // 设置颜色 
89.             g.setColor(Color.red); 
90.  
91.             // 设置 Font 
92.             g.setFont(new Font("宋体", Font.BOLD,
    30)); 
93.  
94.             float alpha = 0.5f; 
    
95.             g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 
    
96.                     alpha)); 
97.  
98.             // 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) . 
    
99.             g.drawString(logoText, 150,
    300); 
100.  
101.             g.dispose(); 
102.  
103.             os = new FileOutputStream(targerPath); 
     
104.  
105.             // 生成图片 
106.             ImageIO.write(buffImg, "JPG", os); 
     
107.  
108.             System.out.println("图片完成添加文字印章。。。。。。"); 
     
109.         } catch (Exception e) { 
     
110.             e.printStackTrace(); 
111.         } finally { 
112.             try { 
113.                 if (null != is) 
     
114.                     is.close(); 
115.             } catch (Exception e) { 
     
116.                 e.printStackTrace(); 
117.             } 
118.             try { 
119.                 if (null != os) 
     
120.                     os.close(); 
121.             } catch (Exception e) { 
     
122.                 e.printStackTrace(); 
123.             } 
124.         } 
125.     } 
126. } 

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();
            }
        }
    }
}