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Do Different JSP Types Exist?

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posted 16 years ago

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Hi friends,

I have a general JSP question that I fail to understand.

Personally, a typical JSP page is like

Note the direct java code on the page.

However, just yesterday I came across this page:

(Note the $ sign...) which I must say led to other code that looked quite "scary" to the naked eye.

So, if there exists a yes or no answer that is, which of the two versions is appropriate and why?

Thanks and regards.

paritosh ranjan

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posted 16 years ago

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The jsp file using <%.....%> is just copying the content inside
<% and %> into jsp_service()

The jsp file with a $ sign is using a EL,which is made for web designers so that they don't need to learn java.

Ben Souther

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posted 16 years ago

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The language="java" attribute is the default so it isn't necessary to clutter up your page with it.
When JSP first came about, it was following in the footsteps of Microsoft's ASP which, at the time could be written in either VBScript or in Javascript.
Nobody, to my knowledge, has ever implemented a JSP container that understood any language other than Java for scriptlet code.

In fact, in JSP 2.0, the concept of scriptlets is going away altogether.
If you would like to read more about scriptless JSPs and the features of JSP 2.0, see this article by Bear Bibeault:
http://www.javaranch.com/journal/200603/Journal200603.jsp#a5

Java API J2EE API Servlet Spec JSP Spec How to ask a question... Simple Servlet Examples jsonf

Consider Paul's rocket mass heater.