java 生成缩略图工具包

Java代码

1. package com.facelook.util;
3. import java.awt.Image;
4. import java.awt.image.BufferedImage;
5. import java.io.File;
6. import java.io.FileNotFoundException;
7. import java.io.FileOutputStream;
8. import java.io.IOException;
10. import javax.imageio.ImageIO;
12. import com.sun.image.codec.jpeg.JPEGCodec;
13. import com.sun.image.codec.jpeg.JPEGImageEncoder;
15. public class ImageSmall {
16. private File fromFile;
17. private File toFile = new File("d:\\a");
18. private String type;
19. public ImageSmall(File fromFile,String type){
20. this.fromFile = fromFile;
21. this.type = type ;
22. }
24. public File samll() throws FileNotFoundException{
25. toFile.deleteOnExit();
26. toFile = new File("d:\\a");
27. FileOutputStream out = new FileOutputStream(toFile);
28. try {
29. Image img = ImageIO.read(fromFile);
30. BufferedImage tag = new BufferedImage(50,50, BufferedImage.TYPE_INT_RGB);
31. tag.getGraphics().drawImage(img.getScaledInstance(50,50, Image.SCALE_SMOOTH), 0,0, null);
32. JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
33. encoder.encode(tag);
34. out.close();
36. } catch (IOException e) {
37. // TODO Auto-generated catch block
38. e.printStackTrace();
39. }
41. return toFile;
42. }
44. public File getFromFile() {
45. return fromFile;
46. }
48. public void setFromFile(File fromFile) {
49. this.fromFile = fromFile;
50. }
52. public File getToFile() {
53. return toFile;
54. }
56. public void setToFile(File toFile) {
57. this.toFile = toFile;
58. }
60. public String getType() {
61. return type;
62. }
64. public void setType(String type) {
65. this.type = type;
66. }
67. }