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How do I separate presentation (HTML) from business logic (Java) when using servlets?

April 26, 2017Business html Java logic presentation separate servlets

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How do I separate presentation (HTML) from business logic (Java) when using servlets?

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Almost anybody who has ever written a servlet can identify with this one. We all know it’s bad for to embed HTML code in our java source; it’s lame to have to recompile and re-deploy every time you want an HTML element to look a bit different. But what are our choices here? There are two basic options; 1. Use JSP: Java Server Pages allows you to embed Java code or the results of a servlet into your HTML. You could, for instance, define a servlet that gives a stock quote, then use the tag in a JSP page to embed the output. But then, this brings up the same problem; without discipline, your content/presentation and program logic are again meshed. I think the ideal here is to completely separate the two. 2. Use a templating/parsing system: Hmm…I know you’re about to rant about re-inventing the wheel, but it’s not that bad (see below). Plus, it really does pay to take this approach; you can have a group of programmers working on the Java code, and a group of HTML producers main