Best way to manage images on jsp web application

Hi,
Am developing a jsp web application, in that project, the user will upload the image files, now I created an image directory in the context root and when the image is uploaded by the user it is saved in the /images directory and the image path is saved in the database. I can display this image using the <img src="images/a.jsp" > tag.
but when I rebuild the project all the images in the /images directory get deleated but the image path is remained in the database, is there any method that I make /image dir outside my project context root so that when I rebuild the project the /images dir can get changed and my project will save images outside the context root that is in the /images dir which is now outside the project context root. and is it possible to display those images using <img src""> tag. because this time my /images dir is at D:/images . what could be the best method or way to handle images with the web application.
any suggestion will be helpfull

Well my friend as per your given case there are to two ways of approaching your problem.
Case 1:
How to save the relevant data ??
.Create a backup folder Workstation on which you are hosting your application where you can store all the uploaded files which is outside the scope of webserver(However we can write a dedicated servlet which can access that file) and make sure we pickup from any the folder path from a specfic MessageResource bundle or an context/servlet init parameter in web.xml.
.Write a Upload servlet/Backing Bean which saves all the files in the discussed folder using utility packages like Commons FileUpload,Oreilly MultipartRequest & etc and then register saved fileName in the database user specfic table specific to user.
How to display the Image ??
.Write a dedicated servlet which can pickup user related fileName specfic information from the database and the read the file from backup folder by constructing the path from the entry made as a init param in web.xml or any other custom MessageResource bundle and then stream the Image data using the ServletOutputStream.
NOTE: do not forget to pickup & setImage file ContentType & Set the content length.
.Just try to render the JSP view file where we are displaying the displaying the images by calling the dedicated ImageServlet.
<img src="ImageServlet?userid=2345" align="center"/>Try to refer below posts to get a better understading.
Dedicated Image Servlet:
http://forum.java.sun.com/thread.jspa?threadID=5208858&messageID=9840042#9840042
Uploading Files Using Servlet:
http://muimi.com/j/jakarta/commons/fileupload/
Case 2
The second method would more or less the same but here we would save the uploaded file
content is saved in the Database as a Blob and we would retrive it back using a dedicated image servlet again.
However,in terms of performance the second case implementation is very costly.
Try to refer below posts to get a better understading on the second case.
http://forum.java.sun.com/thread.jspa?threadID=5193481&tstart=50
http://forum.java.sun.com/thread.jspa?threadID=5211649&messageID=9853670#9853670
Hope this might help :)
REGARDS,
RaHuL

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