Preface
Until recently, JavaServer Pages (JSP) has, for the most part, been accessible only to Java developers. That's because JSP did not provide a standard set of tags for common functionality or a scripting language for page authors. The lack of those essential features meant that JSP developers had to embed Java code in JSP pages or implement custom tags that encapsulated that Java code. Either way, they had to be well versed in the Java programming language to effectively use JSP.
To implement maintainable and extensible Web applications, developers must decouple business and presentation logic. Without an expression language or standard tag library, JSP pages often contained a great deal of Java code, which allowed easy access to business ...
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