By Joseph D. Gradecki, Jim Cole
A accomplished instructional on tips to use the facility of speed 1.3 to construct websites and generate content material Designed to paintings hand-in-hand with Apache Turbine, Struts, and servlets, pace is a robust template language that enormously complements the developer’s skill to customise sites. It separates Java code from the internet pages, creating a web site extra maintainable. due to this, it's a conceivable substitute to JSPs and personal home page and is predicted to turn into the normal template engine. as well as its use with Struts and Turbine, speed is usually used to generate Java and XML resource code, XML schemas, HTML templates, and SQL code. inspite of all its promise, discovering specialist directions on easy methods to competently software with this language has been tricky. This code-intensive educational grants the entire instruments you’ll want. It starts off by way of fast bringing you on top of things on the entire speed basics and the speed Template Language. You’ll then tips on how to observe speed in a number of parts with assistance from richly particular code examples. also, you’ll be taken throughout the steps of establishing a whole software so one can see how one can make the most of the entire concepts and applied sciences mentioned within the booklet. protecting the newest good points of pace 1.3, gaining knowledge of Apache pace indicates you ways to: construct Java-based websites with Struts, servlets, Turbine, and different open-source instruments Generate a wide selection of web pages and code, together with Java, XML, SQL, and Postgres
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Extra info for Mastering Apache Velocity (Java Open Source Library)
Scripting elements include set (assigning a variable and value), looping constructs, conditionals, and includes, among others. Velocimacros—A Velocimacro allows the designer to build macros of commonly used HTML and Velocity scripting elements that are to be repeated when the macro is used. Logging—Velocity makes use of the log4J system for easy logging. 22 I n t r o d u c t i o n t o Ve l o c i t y Resource loaders—The resource loaders give you control over the templates used in the production of Web pages.
Directives—Velocity directives allow the Web designer to have control over the references. Scripting elements include set (assigning a variable and value), looping constructs, conditionals, and includes, among others. Velocimacros—A Velocimacro allows the designer to build macros of commonly used HTML and Velocity scripting elements that are to be repeated when the macro is used. Logging—Velocity makes use of the log4J system for easy logging. 22 I n t r o d u c t i o n t o Ve l o c i t y Resource loaders—The resource loaders give you control over the templates used in the production of Web pages.
In many cases, the controller servlet will delegate processing to other servlets or objects for specific business functionality. Our servlet will obtain an Account object and associate parts of the object with the current context of the Web application. 2, where the information saved to the context is used to display information to the user. What’s Next In this chapter, we explored the Model-View-Controller paradigm, which goes a long way in separating functionality between system components as well as business roles.