示例#1
0
  @GET
  @Path("thumbnails/{slug}_{x: \\d+}_{y: \\d+}_{width: \\d+}_{height: \\d+}.{ext}")
  public Response downloadThumbnail(
      @PathParam("slug") String slug,
      @PathParam("ext") String extension,
      @PathParam("x") Integer x,
      @PathParam("y") Integer y,
      @PathParam("width") Integer width,
      @PathParam("height") Integer height,
      @Context ServletContext servletContext,
      @Context Optional<ImageOptions> imageOptions) {
    if (!IMAGE_EXTENSIONS.contains(extension)) {
      // Refuse to treat a request with image options for a non-image attachment
      return Response.status(Response.Status.BAD_REQUEST).entity("Not an image").build();
    }

    String fileName = slug + "." + extension;
    Attachment file = this.getAttachmentStore().findBySlugAndExtension(slug, extension);
    if (file == null) {
      return Response.status(Response.Status.NOT_FOUND).build();
    }

    try {
      Image image = imageService.readImage(file.getData());
      Rectangle boundaries = new Rectangle(x, y, width, height);
      RenderedImage cropped = imageService.cropImage(image, boundaries);

      if (imageOptions.isPresent()) {
        Optional<Dimension> newDimension =
            imageService.newDimension(
                (Image) cropped, imageOptions.get().getWidth(), imageOptions.get().getHeight());

        Dimension dimensions =
            newDimension.or(
                new Dimension(
                    imageOptions.get().getWidth().get(), imageOptions.get().getHeight().get()));

        return Response.ok(
                imageService.scaleImage((Image) cropped, dimensions),
                servletContext.getMimeType(fileName))
            .header("Content-disposition", "inline; filename*=utf-8''" + fileName)
            .build();
      } else {
        return Response.ok(cropped, servletContext.getMimeType(fileName))
            .header("Content-disposition", "inline; filename*=utf-8''" + fileName)
            .build();
      }
    } catch (IOException e) {
      this.logger.warn("Failed to scale image for attachment [{slug}]", slug);
      return Response.serverError().entity("Failed to scale image").build();
    }
  }
示例#2
0
  @GET
  @Path("{slug}.{ext}")
  public Response downloadImage(
      @PathParam("slug") String slug,
      @PathParam("ext") String extension,
      @Context ServletContext servletContext,
      @Context Optional<ImageOptions> imageOptions) {
    if (!IMAGE_EXTENSIONS.contains(extension)) {
      // Refuse to treat a request with image options for a non-image attachment
      return Response.status(Response.Status.BAD_REQUEST).entity("Not an image").build();
    }

    if (imageOptions.isPresent()) {

      String fileName = slug + "." + extension;
      Attachment file = this.getAttachmentStore().findBySlugAndExtension(slug, extension);
      if (file == null) {
        return Response.status(Response.Status.NOT_FOUND).build();
      }

      try {
        Image image = imageService.readImage(file.getData());

        if (imageOptions.get().getHeight().isPresent()
            && imageOptions.get().getWidth().isPresent()) {
          // Both width and height set -> calculate a fitting box

          Dimension dimension =
              new Dimension(
                  imageOptions.get().getWidth().get(), imageOptions.get().getHeight().get());
          Optional<Rectangle> fittingBox = imageService.getFittingRectangle(image, dimension);

          RenderedImage scaled;

          if (fittingBox.isPresent()) {
            RenderedImage cropped = imageService.cropImage(image, fittingBox.get());
            scaled = imageService.scaleImage((Image) cropped, dimension);
          } else {
            scaled = imageService.scaleImage(image, dimension);
          }

          return Response.ok(scaled, servletContext.getMimeType(fileName))
              .header("Content-disposition", "inline; filename*=utf-8''" + fileName)
              .build();
        } else {
          Optional<Dimension> newDimension =
              imageService.newDimension(
                  image, imageOptions.get().getWidth(), imageOptions.get().getHeight());

          if (newDimension.isPresent()) {
            return Response.ok(
                    imageService.scaleImage(image, newDimension.get()),
                    servletContext.getMimeType(fileName))
                .header("Content-disposition", "inline; filename*=utf-8''" + fileName)
                .build();
          }

          return Response.ok(image, servletContext.getMimeType(fileName))
              .header("Content-disposition", "inline; filename*=utf-8''" + fileName)
              .build();
        }
      } catch (IOException e) {
        this.logger.warn("Failed to scale image for attachment [{slug}]", slug);
        return Response.serverError().entity("Failed to scale image").build();
      }
    }

    return this.downloadFile(slug, extension, servletContext);
  }