Frank と Quirijn の回答に従って、Ambient Data Framework を使用してカートリッジ クレーム プロセッサで画像のサイズを変更することに興味があるかもしれません。このソリューションはテクノロジにとらわれず、Java と .Net の両方で再利用できます。サイズ変更された画像バイトを Claim に入れて、Java または .Net で使用するだけです。
Java クレーム プロセッサ:
public void onRequestStart(ClaimStore claims) throws AmbientDataException {
int publicationId = getPublicationId();
int binaryId = getBinaryId();
BinaryContentDAO bcDAO = (BinaryContentDAO)StorageManagerFactory.getDAO(publicationId, StorageTypeMapping.BINARY_CONTENT);
BinaryContent binaryContent = bcDAO.findByPrimaryKey(publicationId, binaryId, null);
byte[] binaryBuff = binaryContent.getContent();
pixelRatio = getPixelRatio();
int resizeWidth = getResizeWidth();
BufferedImage original = ImageIO.read(new ByteArrayInputStream(binaryBuff));
if (original.getWidth() < MAX_IMAGE_WIDTH) {
float ratio = (resizeWidth * 1.0f) / (float)MAX_IMAGE_WIDTH;
float width = original.getWidth() * ratio;
float height = original.getHeight() * ratio;
BufferedImage resized = new BufferedImage(Math.round(width), Math.round(height), original.getType());
Graphics2D g = resized.createGraphics();
g.setComposite(AlphaComposite.Src);
g.drawImage(original, 0, 0, resized.getWidth(), resized.getHeight(), null);
g.dispose();
ByteArrayOutputStream output = new ByteArrayOutputStream();
BinaryMeta meta = new BinaryMetaFactory().getMeta(String.format("tcm:%s-%s", publicationId, binaryId));
String suffix = meta.getPath().substring(meta.getPath().lastIndexOf('.') + 1);
ImageIO.write(resized, suffix, output);
binaryBuff = output.toByteArray();
}
claims.put(new URI("taf:extensions:claim:resizedimage"), binaryBuff);
}
.Net HTTP ハンドラ:
public void ProcessRequest(HttpContext context) {
if (context != null) {
HttpResponse httpResponse = HttpContext.Current.Response;
ClaimStore claims = AmbientDataContext.CurrentClaimStore;
if (claims != null) {
Codemesh.JuggerNET.byteArray javaArray = claims.Get<Codemesh.JuggerNET.byteArray>("taf:extensions:claim:resizedimage");
byte[] resizedImage = javaArray.ToNative(javaArray);
if (resizedImage != null && resizedImage.Length > 0) {
httpResponse.Expires = -1;
httpResponse.Flush();
httpResponse.BinaryWrite(resizedImage);
}
}
}
}
Java フィルター:
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
ClaimStore claims = AmbientDataContext.getCurrentClaimStore();
if (claims != null) {
Object resizedImage = claims.get(new URI("taf:extensions:claim:resizedimage"));
if (resizedImage != null) {
byte[] binaryBuff = (byte[])resizedImage;
response.getOutputStream().write(binaryBuff);
}
}
}