How to include HTML file in JSP using HTML elements or Javascript?

Question

Hi,
I have around 15000 static html files one for each item which we display each upon invoking an item.The HTML file should be part of a JSP file.
Please note that the name of the HTML file is determined dynamically
Placing all the HTML files within the web application does not give us good performance so i would like to put all of them in the webserver.
I am not able to include the file in the JSP using the jsp:include attribute if i place the HTML files in the webserver ,
in order to do that i think should use either HTML element or javascript to include the HTML in the JSP.is there any alternative to <Jsp:include>
Does anyone have an idea how to include the HTML file and take advan tage of webserver?
Any ideas are appreciated

Answer 1

What you need to do is simply read the HTML file from the disk and dump it out to the outputstream. It really is that simple.
There's no reason you need to include all 15000 files in the actual WAR, you can place those files any place handy that is easy for the application to see (in another directory, or accessible from a file server if you have multiple front ends).
Then, just write a utiility function that takes the output stream (i.e. the 'out' JSP variable), and the file name, read the file, and write it to the stream.
If you start noticing performance issues, then you can try doing some caching, but truth is your OS should be doing that for you.
But, truth be told that's the only practical way to do it.
Another solution would be to use JavaScriipt and XMLHttpRequest (i.e "AJAX") to load the file at the client side, and simply replace a tag with the results.
That's also pretty trivial to write, any web site talking about AJAX should give you hint there.
Of course, that won't work for folks who have JavaScript turned off, or some other incompatible browser, whereas the server side solution obviously works everywhere.