This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Hello All, I am developing a web application using the Struts framework. I have a page where I am using html 'file' controls to attach/ upload files.
1) Upload part: --------------- I receive these attached files in the Struts action/ task and use struts upload's FormFile class and it's getInputStream() to read the file contents.
2) Storage: ----------- I use JBOSS as my application server. In my case, the uploaded files are written/stored in a directory (/usr/loca/data in Linux) outside the app server's context. As a part of this process, I store the name of the file in the DB so that I can refer it later.
3) Retrieval: ------------- When these files, for example, .jpg's are requested as a part of a picture gallery I refer the DB and get all the image names associated with the gallery. (3b) I then move the respective image files from the directory (step 2) to the app server's context.
My question is 3 and 3b a scalable approach. My application will have more and more files (images, pdf's et...) attached in the future. I think the process of moving files as I do in step 3 will be a major efficiency problem in terms of space and size (the .war file i generate after having the files moved inside is HUUUGE).
I am sure I am missing something when it comes to file upload, storage and retrieval. I do not understand the concept of how/ where these files are stored in the first place.
Please let me know if you have any ideas on how it can be implemented/ improved.
Thank you, Karthik.
Joined: Oct 30, 2006
This is a correction to my initial post: ---------------------------------------- In step 3 I DO NOT move the files from the directory in step 2 to a directory inside the application's .war file. Instead, I am copying these image files from directory in step 2 into a new directory that I create inside the EXTRACTED .war file (As I mentioned in my previous post, I am using JBOSS and it extracts the .war file when we deploy it)