Core servlets and JavaServer Pages by Marty Hall, Larry Brown

By Marty Hall, Larry Brown

Servlets and JavaServer Pages dramatically simplify the production of dynamic web content and Web-enabled functions. With Java 2 company variation (J2EE), those instruments have come of age, incomes the aid of an remarkable diversity of internet and alertness servers on each significant working method. This publication is a accomplished consultant for each skilled developer who desires to grasp the recent models of those robust instruments. commence via gaining knowledge of servlet syntax, deploy and setup basics and the servlet lifestyles cycle. Use cookies and consultation monitoring, optimize browsers, compress pages to diminish obtain time, and reduce overhead with continual HTTP periods. subsequent, grasp each key JavaServer Pages 1.1 approach you have to: expressions, declarations, and scriptlets; controlling the layout of the servlet that effects from the web page; incorporating reusable JavaBeans; sharing Beans between pages; dynamically together with different documents; defining your personal JSP tag libraries, and mixing servlets and JSP in one software. half III deals the industry's such a lot in-depth, functional assurance of utilizing applets and HTTP tunneling as servlet entrance ends, utilizing JDBC and connection pooling, and HTML kinds

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For instance, the results page from search engines and order-confirmation pages at on-line stores are specific to particular user requests. The Web page is derived from data that changes frequently. For example, a weather report or news headlines page might build the page dynamically, perhaps returning a previously built page if it is still up to date. The Web page uses information from corporate databases or other server-side sources. For example, an e-commerce site could use a servlet to build a Web page that lists the current price and availability of each item that is for sale.

So the CGI programmer has to be very careful to filter out characters such as backquotes and semicolons that are treated specially by the shell. This is harder than one might think, and weaknesses stemming from this problem are constantly being uncovered in widely used CGI libraries. A second source of problems is the fact that some CGI programs are processed by languages that do not automatically check array or string bounds. com. com. © Prentice Hall and Sun Microsystems. Personal use only; do not redistribute.

Com. com. © Prentice Hall and Sun Microsystems. Personal use only; do not redistribute. 5 Installation and Setup classes when compiling. If the variable is unspecified, javac looks in the current directory and the standard system libraries. ”, signifying the current directory. Following is a brief summary of how to set the environment variable on a couple of different platforms. Assume dir is the directory in which the servlet and JSP classes are found. jar Add :$CLASSPATH to the end of the setenv line if your CLASSPATH is already set and you want to add more to it, not replace it.

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