java - 谷歌应用程序引擎和Java : images thumb

Question

我正在尝试在 Google App Engine 中调整图像大小并裁剪图像以创建缩略图

我希望能够创建任意尺寸的 200x150 拇指。

这是我到目前为止使用的代码，现在我需要对其进行裁剪，使其不大于 200x150:

    Image oldImage = ImagesServiceFactory.makeImage(picture);
    //Create the Image Service Factory and the Resize Transform
    ImagesService imagesService = ImagesServiceFactory.getImagesService();
    int w = 0;
    int h = 0;
    if (oldImage.getWidth() > oldImage.getHeight()) {
        w = 1000;
        h = height;
    } else {
        h = 1000;
        w = width;
    }
    Transform resize = ImagesServiceFactory.makeResize(w, h);
    //Resize The Image using the transform created above
    Image resizedImage = imagesService.applyTransform(resize, oldImage);

    Transform crop = ImagesServiceFactory.makeCrop(0.0, 0.0, width / resizedImage.getHeight(), height / resizedImage.getHeight());

    Image cropedImage = imagesService.applyTransform(crop, resizedImage);

    //Serve the newly transformed image
    return cropedImage.getImageData();

谢谢!

Answer 1

我使用 getServingUrl 动态地通过 Google 应用程序引擎提供缩略图

可以调整大小和裁剪，仅存储一张图像，动态调整大小和裁剪。由于我对该解决方案非常满意，因此我希望它也适合您。