Core Servlets and JavaServer Pages (Vol. 1. Core by Marty Hall, Larry Brown

By Marty Hall, Larry Brown

Within the Java universe, the interface layer of the ever present model-view-controller (MVC) software program layout paradigm is dealt with via both servlets of JavaServer Pages (JSP). the second one version of middle Servlets and JavaServer Pages, like its predecessor, records those convenient applied sciences absolutely and essentially. excess of a immediately API reference, this ebook provides examples - whole with code and a list or monitor shot exhibiting effects - anywhere attainable. it is a terrific method for speaking to programmers what they should do for you to in attaining the results and behaviors they wish. what is new within the moment version? plenty, by way of its eponymous software program improvement environments: The ebook covers servlets 2.4 and JSP 2.0. The examples are extra sophisticated, too, and extra awareness is paid to helping applied sciences like net and database servers.The didactic method of authors Marty corridor and Larry Brown is recipe-like. they generally commence with an announcement of an issue to be solved, then speak about proper features of the servlet or JSP API. a sequence of code listings follows, and reveal pictures exhibiting effects elevate the rear. the web impression is that it is easy to identify appropriate sections within the desk of contents, it really is transparent how implementation works (thanks to the wide listings) and there is no doubt approximately what the consequences are meant to be. extra intricate examples exhibit how servlets and JSP paintings in procuring cart, public sale, and different purposes. this can be a major and useful replace to a massive Java e-book.

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For example, servlets could be embedded in FTP or mail servers to extend their functionality. In practice, however, this use of servlets has not caught on, and we discuss only 62 Part I: Servlet Technology Part I: Servlet Technology 63 HTTP servlets. 1 outlines a basic servlet that handles GET requests. GET requests, for those unfamiliar with HTTP, are the usual type of browser requests for Web pages. A browser generates this request when the user enters a URL on the address line, follows a link from a Web page, or submits an HTML form that either does not specify a METHOD or specifies METHOD="GET".

Part I: Servlet Technology 35 36 Part I: Servlet Technology 2. Specifying the port. conf and change the value of the port attribute of the http element from 8080 to 80. Details are given in the following subsections. Setting the JAVA_HOME Variable The most important setting is the JAVA_HOME environment variable. This variable should refer to the base SDK installation directory. bat. 1_01 Specifying the Resin Port To avoid conflicts with preexisting servers, Resin uses port 8080 by default. However, if you won't be simultaneously running another server, you will probably find it convenient to change Resin to use port 80, the standard HTTP port.

There are various server-specific mechanisms for doing this registration, many of which involve the use of an interactive administration console. But, on most servers, you can also register a Web application simply by dropping the Web application directory in a standard location and then restarting the server. In such a case, the name of the Web application directory is used as the URL prefix. Here are the standard locations for Web application directories with the three servers used throughout the book.

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