I tried to add an upload field in one my form, using Google Blobstore API. But it's not as mush easy that I thought! The Google example works well but...
In my case, before using Blobstore (users didn't need to upload photos before): - I had an addItem.jsp file which contains a form with several fields. - I had an addItemActionServlet which was called when the user submitted the form. - If there was an error (like an empty field), users were redirected on the same page to correct the form to submit. If everything wa allright, users were redirected in another page. (For both cases, I had to set attributes to my request, and so, I had to use the Forward method to redirect). Then, I added an upload field sothat users can upload photo on the same page they fill the other fields. I was forced to change the action, by calling the createUploadUrl() method...ok. Now here is the problem: Google seems to want that I use SendRedirect() method only, not Forward(). Indeed, with the forward() method, i get : - this error message on my page: "HTTP ERROR 500 - Expected a redirect, tried to write content instead." - this error on my Eclipse console: "GRAVE: Must only return a redirect from a Blobstore upload callback." But my form is designed to transfer lots of things between page. Should I design my form error handling in a different manner? It would be a big pain because there is lots of stuff! I would prefere that you give me an intelligent tip :) More, my code seems to be dirty because I'm calling the blobstore service directly from addItem.jsp, and the form action always creates an uploadURL, but it's possible that a user just would like to addItem without uploading any photo on it!!! So, have you got an idea to solve this problem or to proceed differently? Thanks a lot. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
