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EL is a language specifically tailored for presentation logic. All this pushes you towards a cleaner separation of UI rendering and other logic. The disadvantage of lots of embedded code within a JSP X page is that it's virtually impossible to test easily, whereas practicing this separation of concerns makes most of your logic fully unit-testable. This allows stuff to properly and efficiently parse it.
I have heard developers say that this helps your pages be more 'future proof' opposed to JSP. We prefer to pick something less restrictive and add "best practices" recommandations like "do not put java scriptlets" inside jsp files.
Matthew- ADF! I agree that clean code is generally good and Java logic in the JSP is generally bad but there are certain instances where you want to use a utility function to return a string value or something where a TagLib or the model request attributes would be overkill.
Hello fellow JDeveloper developer! Matthew Ruston Matthew Ruston 4, 6 6 gold badges 32 32 silver badges 47 47 bronze badges. As stated in Spring 3. Masson A. Masson 1, 3 3 gold badges 22 22 silver badges 33 33 bronze badges. I saw a "future proof" observation as well Hendy Irawan Hendy Irawan What are everyone's thoughts regarding scriptlets in JSP? Thomas Beauvais Thomas Beauvais 1, 2 2 gold badges 10 10 silver badges 26 26 bronze badges. Here you can check why the scriplets are a bad practice stackoverflow.
Fundamentally, this means that a JSP document must be well formed, meaning that each start tag must have a corresponding end tag and that the document must have only one root element. Those elements that are not compliant are summarized in Table along with the equivalent elements in XML syntax. The standard syntax version is as follows:. As you can see, a number of constructs that are legal in standard syntax have been changed to comply with XML syntax:. With only these few small changes, when you save the file with a.
Guide to JavaServer Pages (JSP)
Java Server Pages JSP is a server-side programming technology that enables the creation of dynamic, platform-independent method for building Web-based applications. This tutorial will teach you how to use Java Server Pages to develop your web applications in simple and easy steps. JSP pages can be used in combination with servlets that handle the business logic, the model supported by Java servlet template engines. This means that JSP can play a part in the simplest applications to the most complex and demanding. As mentioned before, JSP is one of the most widely used language over the web. I'm going to list few of them here:.
Java Server-Side Programming
It can be used as HTML page, which can be used in forms and registration pages with the dynamic content into it. Dynamic content includes some fields like dropdown, checkboxes, etc. This can also be used to access JavaBeans objects. We can share information across pages using request and response objects. JSP can be used for separation of the view layer with the business logic in the web application. In Java server pages JSP, the execution is much faster compared to other dynamic languages.
JSP Tutorial for Beginners: Learn in 7 Days
The canonical reference for building a production grade API with Spring. We can make requests to a Java Servlet, perform relevant logic, and render a specific view server-side to be consumed client-side. We'll start by exploring a few key concepts relevant to JSP: namely, the difference between dynamic and static contents, the JSP lifecycle, and JSP syntax as well as directives and the implicit objects created at compilation! JSP files are essentially. There are two ways to add Java code to a.