自動調整圖像大小

Question

有沒有什麼方法可以將圖像上傳到服務器？我已經使用servlet和JSP上傳了一張圖片。現在我想按照固定的比例調整圖像大小。

有沒有可用的API？

Answer 1

Image newimg = img.getScaledInstance(scale, scale, 
      java.awt.Image.SCALE_SMOOTH); 

Answer 2

從http://www.mkyong.com/java/how-to-resize-an-image-in-java/

Graphics2D is providing the image re-size feature as follows : 

    BufferedImage resizedImage = new BufferedImage(IMG_WIDTH, IMG_HEIGHT, type); 
    Graphics2D g = resizedImage.createGraphics(); 
    g.drawImage(originalImage, 0, 0, IMG_WIDTH, IMG_HEIGHT, null); 
    g.dispose(); 

報價一旦妄作。我認爲它會幫助你。

Answer 3

看到這些鏈接

Are there any java library for thumbnails generation?
Java image resize, maintain aspect ratio
How to resize an image in Java ?