Core servlets and JavaServer Pages by Marty Hall, Larry Brown

By Marty Hall, Larry Brown

Servlets and JavaServer Pages dramatically simplify the construction of dynamic websites and Web-enabled functions. With Java 2 firm version (J2EE), those instruments have come of age, incomes the aid of an exceptional variety of net and alertness servers on each significant working process. This publication is a entire advisor for each skilled developer who desires to grasp the hot types of those robust instruments. begin via gaining knowledge of servlet syntax, set up and setup basics and the servlet existence cycle. Use cookies and consultation monitoring, optimize browsers, compress pages to scale back obtain time, and reduce overhead with continual HTTP classes. subsequent, grasp each key JavaServer Pages 1.1 process you will want: expressions, declarations, and scriptlets; controlling the structure of the servlet that effects from the web page; incorporating reusable JavaBeans; sharing Beans between pages; dynamically together with different records; defining your personal JSP tag libraries, and mixing servlets and JSP in one software. half III bargains the industry's so much in-depth, sensible insurance of utilizing applets and HTTP tunneling as servlet entrance ends, utilizing JDBC and connection pooling, and HTML kinds

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15 © Prentice Hall and Sun Microsystems. Personal use only; do not redistribute. html Before you start the server, you may want to designate parameters like the port on which it listens, the directories in which it looks for HTML files, and so forth. This process is totally server-specific, and for commercial-quality Web servers should be clearly documented in the installation notes. 0 specs (Sun JSWDK), there are a number of important but poorly documented settings that I’ll describe here. Port Number Tomcat and the JSWDK both use a nonstandard port by default in order to avoid conflicts with existing Web servers.

And, since JavaScript lacks routines for network programming, JavaScript code on the client cannot access server-side resources like databases, catalogs, pricing information, and the like. JavaScript can also be used on the server, most notably on Netscape servers and as a scripting language for IIS. Java is far more powerful, flexible, reliable, and portable. com. com. 11 © Prentice Hall and Sun Microsystems. Personal use only; do not redistribute. 12 Chapter 1 Overview of Servlets and JavaServer Pages Versus Static HTML Regular HTML, of course, cannot contain dynamic information, so static HTML pages cannot be based upon user input or server-side data sources.

To use them, you’ll need to know where to place regular HTML files to make them accessible to the server. html (replace localhost with the real hostname if running remotely). A JSP page can be installed anywhere that a normal HTML page can be. Invoking the Servlet With different servers, servlet classes can be placed in a variety of different locations, and there is little standardization among servers. To invoke servlets, however, there is a common convention: use a URL of the form http://host/servlet/ServletName.

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