Hello Thiago,
I have implemented a Requestfilter as you wrote here before!
But I still encounter major issues when retrieving the file as an Array of
of Bytes, since thats how we can put it on a Blob(googles Binary Large
Object).
The problem here is that the request Parameter in is not an implementation
of the HttpServletRequest!
Is there another way of retrieving the posted file as a byte of arrays out
of the *Request* parameter?
Or How can I else retrieve the original HttpServletRequest in Tapestry5?
here is my example:
*public class MyUploadFilter implements RequestFilter {*
*private final Logger log;*
*private final String urlPath = "/personal/addproduct.upload";*
*private static final String IMAGE = "imageField";*
*@Inject*
*private MyFileUploadService uploadService;*
*
*
*public MyUploadFilter(Logger log) {*
*this.log = log;*
*}*
*
*
*@Override*
*public boolean service(Request request, Response response, RequestHandler
handler) throws IOException {*
*log.info("PATH = " + request.getPath());*
*if (urlPath.equalsIgnoreCase(request.getPath())) {*
*log.info("################# GOOOOOO ############");*
*
*
*request.getParameterNames();*
*for (String param : request.getParameterNames()) {*
*System.out.println(" # " + param);*
*if(IMAGE.equalsIgnoreCase(param)){*
*Object obj=request.getAttribute(param);*
*System.out.println(" # " + obj.getClass());*
*System.out.println(" # " + obj.getClass().getCanonicalName());*
**
*}*
*}*
**
*try*
*{*
*
*
*ServletFileUpload upload = new ServletFileUpload(); *
*FileItemIterator iterator = upload.getItemIterator(request);*
*FileItemStream item = iterator.next();*
*InputStream stream = item.openStream();*
*String filename = item.getName();*
*Blob content = new Blob(IOUtils.toByteArray(stream));*
*
*
*if (filename.substring(filename.length() -
3,filename.length()).equalsIgnoreCase("JPG"))*
*{*
*PersistenceManager pm = PMF.get().getPersistenceManager();*
*Image doc = new Image(filename, content);*
*pm.makePersistent(doc);*
*pm.close();*
*}*
*}*
*catch (Exception ex) {*
*log.error(ex.getMessage());*
*return false;*
*}*
*
*
*}*
*return handler.service(request, response);*
*}*
*}*
On 12 March 2011 20:47, Thiago H. de Paula Figueiredo <thiag...@gmail.com>wrote:
> On Sat, 12 Mar 2011 15:29:21 -0300, Fernando Benjamin <
> fernandobenja...@gmail.com> wrote:
>
> Fellow tapestry developers,
>>
>
> Hi!
>
>
> I need to upload an image to a certain url, but I can't use any Normal
>> file upload mechanism because I am running Tapestry5 on GAE!
>>
>
> So you want to write an application that receives a file upload, right?
>
>
> Well I don't know from which Class my Filter should implement.
>>
>
> I'd implement RequestFilter. Being it part of Tapestry, you don't need to
> add anything to web.xml. You just need to contribute your implementation to
> the RequestHandler service. This is done by adding a method like this in
> your AppModule:
>
> public void contributeRequestHandler(OrderedConfiguration<RequestFilter>
> configuration) {
> configuration.addInstance("YourRequestFilterClassName",
> YourRequestFilterClass.class, "before:*");
>
> }
>
> Where can I found more info about the request life-cycle in Tapestry5?
>>
>
> http://tapestry.apache.org/request-processing.html. Don't be scared: you
> don't need to know even 10% of it to use Tapestry very well. The diagram at
> the end of that page is just showing every single thing that can take part
> of processing a request, including many internal classes you never touch or
> use.
>
> *What I would like to do is:*
>>
>> 1-Implement a filter with some functionality
>> 2- Inject the filter it at the right place with TapestryIOC.
>> 3-Map an url to this filter
>>
>
> Implementing a RequestFilter, you don't need to map an URL to it. Inside
> the RequestFilter's service method, you use request.getPath() to know if
> that request's URL is handled by your filter. If yes, process it and return
> true. If not, return service(request, response, handler).
>
> --
> Thiago H. de Paula Figueiredo
> Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
> and instructor
> Owner, Ars Machina Tecnologia da Informação Ltda.
> http://www.arsmachina.com.br
>
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>
