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Editorial Team
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Asked: 2026-05-17T06:55:11+00:00

I am trying to display dynamic data in jsp. for that I am calling

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I am trying to display dynamic data in jsp. for that I am calling java method inside a jsp using jsp expression. this java method is taking much time but it is returning some value.(I cant reduce the method execution time.)
But my jsp is showing blank.
Can anybody explain what would be the reason and how to resolve.
This code is not written by me But I need to find out the root cause.

my jsp code look like

  display.jsp

       ..... hello......start...

       <%= obj.getDynamicData() %>     

      .....completed .... end
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1 Answer

  1. Editorial Team

    It’s likely because you’re (ab)using JSP to execute some raw Java code. When an exception is been thrown halfway sending the JSP’s output, the remnant of the JSP won’t be sent to the browser anymore. But the webserver cannot change the response into an error page with exception details anymore as well and the webbrowser will end up with a halfbaked HTML output which is often displayed as a blank page.

    Any uncaught exception is usually logged into server’s logfile. You need to dig in the server’s logs for the exception and stacktrace so that you can fix the root cause of the problem. Exceptions contain worthful information about the cause of the problem.

    A halfbaked HTML page is just an incomplete HTML page which caused the webbrowser not to understand how to display it properly. Rightclick the page in webbrowser and choos View Source. Verify if it is as expected, if necessary with help of the w3 validator.

    Further, it may be worth the effort trying in different (better) webbrowsers like Firefox and Chrome. MSIE6/7 is namely known to choke like that when it has received an enormously HTML <table>. It has a poor table rendering engine.

    To save yourself from future trouble like this, I suggest to move all that Java code out into a Servlet class so that you can get a more friendly (at least, it’s better than digging in server’s log files) error page in case of an exception in Java code. See also How to avoid Java code in JSP?

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