java - 图像大小调整 Java

Question

我在调整图像大小时遇到​​了一个奇怪的问题，无法弄清楚我做错了什么。我已经阅读了很多帖子，它们基本上具有与我相同的代码:

(我使用java库Scalr)

File image = new File("myimage.png");
File smallImage = new File("myimage_s");
try {
    BufferedImage bufimage = ImageIO.read(image);

    BufferedImage bISmallImage = Scalr.resize(bufimage, 30); // after this line my dimensions in bISmallImage are correct!
    ImageIO.write(bISmallImage, "png", smallImage); // but my smallImage has the same dimension as the original foto
} catch (Exception e) {}

谁能告诉我我做错了什么？

Answer 1

我没有发现您的代码有任何问题。

我将其放入 Eclipse 中针对 Java SE 7 并使用 imgscalr 4.2 的快速测试项目中在 Windows 7 Pro 64 位上:

import java.awt.image.BufferedImage;
import java.io.File;

import javax.imageio.ImageIO;

import org.imgscalr.Scalr;

public class ScalrTest {

    public static void main(String[] args) {
        File image = new File("myimage.png");
        File smallImage = new File("myimage_s.png"); // FORNOW: added the file extension just to check the result a bit more easily
        // FORNOW: added print statements just to be doubly sure where we're reading from and writing to
        System.out.println(image.getAbsolutePath());
        System.out.println(smallImage.getAbsolutePath());
        try {
            BufferedImage bufimage = ImageIO.read(image);

            BufferedImage bISmallImage = Scalr.resize(bufimage, 30); // after this line my dimensions in bISmallImage are correct!
            ImageIO.write(bISmallImage, "png", smallImage); // but my smallImage has the same dimension as the original foto
        } catch (Exception e) {
            System.out.println(e.getMessage()); // FORNOW: added just to be sure
        }
    }

}

使用以下 myimage.png...

...，它产生了以下 myimage_s.png:

也许存在阻碍您的代码的环境问题，但想到的可能性会伴随明显的错误。