1 import java.io.File;
 2 import java.io.FileOutputStream;
 3 import java.awt.Image;
 4 import java.awt.image.BufferedImage;
 5 import com.sun.image.codec.jpeg.JPEGCodec;
 6 import com.sun.image.codec.jpeg.JPEGImageEncoder;
 7 
 8 public class MakeBreviaryImage {
 9 
10     public void MakeBreviaryImage(File image, int formatWideth,
11             int formatHeight, String savePath) throws Exception {
12         File _file = image;// get image file
13         Image src = javax.imageio.ImageIO.read(_file); // construct image
14         int imageWideth = src.getWidth(null); // get wideth of image
15         int imageHeight = src.getHeight(null); // get height of image
16         int changeToWideth = 0;
17         int changeToHeight = 0;
18         // set Breviary image's size
19         if (imageWideth > 0 && imageHeight > 0) {
20             // flag=true;
21             if (imageWideth / imageHeight >= formatWideth / formatHeight) {
22                 if (imageWideth > formatWideth) {
23                     changeToWideth = formatWideth;
24                     changeToHeight = (imageHeight * formatWideth) / imageWideth;
25                 } else {
26                     changeToWideth = imageWideth;
27                     changeToHeight = imageHeight;
28                 }
29             } else {
30                 if (imageHeight > formatHeight) {
31                     changeToHeight = formatHeight;
32                     changeToWideth = (imageWideth * formatHeight) / imageHeight;
33                 } else {
34                     changeToWideth = imageWideth;
35                     changeToHeight = imageHeight;
36                 }
37             }
38         }
39         // ---------
40         BufferedImage bufferedImage = new BufferedImage(changeToWideth,
41                 changeToHeight, BufferedImage.TYPE_INT_RGB);
42         bufferedImage.getGraphics().drawImage(src, 0, 0, changeToWideth,
43                 changeToHeight, null); // chage image size
44         FileOutputStream out = new FileOutputStream(savePath); // out put the
45                                                                 // image
46         JPEGImageEncoder encoder = null;
47         encoder = JPEGCodec.createJPEGEncoder(out);
48         encoder.encode(bufferedImage); // like JPEG encoding
49         // System.out.print(width+"*"+height);
50         out.close();
51     }
52 }

 1 public class TestMakeBreviaryImage {
 2 
 3     /**
 4      * @param args
 5      * @throws Exception 
 6      */
 7     public static void main(String[] args) throws Exception {
 8         File testImage = new File("C:\\Documents and Settings\\All Users\\Documents\\My Pictures\\Sample Pictures\\nuclear-test-7.jpg");
 9         MakeBreviaryImage test = new MakeBreviaryImage();
10         test.MakeBreviaryImage(testImage,60,50,"C:/newfile.jpg");
11     }
12 
13 }

qurui 2007-12-03 23:20 发表评论