自动调整图像大小

Question

有没有什么方法可以将图像上传到服务器？我已经使用servlet和JSP上传了一张图片。现在我想按照固定的比例调整图像大小。

有没有可用的API？

Answer 1

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

Answer 2

从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(); 

报价一旦妄作。我认为它会帮助你。

Answer 3

看到这些链接

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