troubleshooting Question

Is it possible to "sandbox" html content within a JSP?

Avatar of jksung
jksung asked on
4 Comments1 Solution332 ViewsLast Modified:
I am trying to create a tool within my Spring MVC webapp where the JSP page takes in text from a user from a textbox, then displays the user text below the textbox with every non-UTF8 decode-able character highlighted in yellow (by taking in the user text as a string, and wrapping every non-UTF8 character with <span style='background:yellow'>(character)</span> and saving the result as form.userDataHighlighted), then display it in the webpage as such:

                                                <TD valign="top">

The problem is that the user may enter html content with CSS styling as such:

        <meta http-equiv=Content-Type content="text/plain; charset=utf-8">

                (some user defined styling)

and this can affect the styling of the main webpage (for example, change the background color of the main webpage).

Is there a way I can "sandbox" the user text within the JSP so that it cannot affect the main JSP styling (such as display it in some kind of frame)?  I have tried something like:

<table border="1">
<td style="width:500px;height:400px">
<iframe srcdoc=${form.userDataHighlighted} frameborder="0" style="width:100%;height:100%"></iframe>

and also:


but in both cases, the background color of the main page is still affected.  Is there a way I can display the user's text with the non-UTF8 characters highlighted without allowing the user content to affect the styling of the main page?
IT Business Systems Analyst / Software Developer

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Top Expert 2015

The Distinguished Expert awards are presented to the top veteran and rookie experts to earn the most points in the top 50 topics.

Log in to continue reading
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform for $9.99/mo
View membership options
Unlock 1 Answer and 4 Comments.
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
See how we're fighting big data
The Value of Experts Exchange in My Daily IT Life

Experts Exchange (EE) has become my company's go-to resource to get answers. I've used EE to make decisions, solve problems and even save customers. OutagesIO has been a challenging project and... Keep reading >>


Owner of Outages.IO
Phoenix, Arizona, United States
Member Since 2016
Join a full scale community that combines the best parts of other tools into one platform.
Unlock 1 Answer and 4 Comments.
View membership options
“All of life is about relationships, and EE has made a virtual community a real community. It lifts everyone's boat.”
William Peck

Member since 2004