Java Server Pages or JSP for short is Sun’s solution for developing dynamic web sites. JSP provide first-class server side scripting support for making database driven web applications. JSP enable the developers to straight infix Java codification into jsp file. this makes the development procedure really simple and its care besides becomes really easy. JSP pages are efficient. it loads into the web waiters memory on having the petition really first clip and the subsequent calls are served within a really short period of clip. In today’s environment most web sites waiters dynamic pages based on user petition. Database is really convenient manner to hive away the informations of users and other things. JDBC provide first-class database connectivity in heterogenous database environment. Using JSP and JDBC its really easy to develop database driven web application. Java is known for its feature of “write one time. run anyplace. ” JSP pages are platform independent. Your port your. jsp pages to any platform.
Installing JSP
First of all download JavaServer Web Development Kit ( JSWDK1. 0. 1 ) from hypertext transfer protocol: //java. Sun. com/products/servlet/download. hypertext markup language. JSWDK comes with full certification and it’s really easy to put in. so the installing procedure is non mentioned here. The JSWDK is the official mention execution of the servlet 2. 1 and JSP 1. 0 specifications. It is used as a little stand-alone waiter for proving servlets and JSP pages before they are deployed to a full Web waiter that supports these engineerings. It is free and dependable. but takes rather a spot of attempt to put in and configure.
Other Waiters that support JSP
• Apache Tomcat.
Tom is the official mention execution of the servlet 2. 2 and JSP 1. 1 specifications. It can be used as a little stand-alone waiter for proving servlets and JSP pages. or can be integrated into the Apache Web waiter.
• Allaire JRun.
JRun is a servlet and JSP engine that can be plugged into Netscape Enterprise or FastTrack waiters. IIS. Microsoft Personal Web Server. older versions of Apache. O? Reilly? s WebSite. or StarNine WebSTAR.
• New Atlanta? s ServletExec.
ServletExec is a fast servlet and JSP engine that can be plugged into most popular Web waiters for Solaris. Windows. MacOS. HP-UX and Linux. You can download and utilize it for free. but many of the advanced characteristics and disposal public-service corporations are disabled until you purchase a licence. • Gefion’s LiteWebServer ( LWS ) . LWS is a little free Web waiter that supports servlets version 2. 2 and JSP 1. 1. • GNU JSP. free. unfastened beginning engine that can be installed on Apache web waiter. • PolyJSP. PolyJsp is based on XML/XSL and has been designed to be extensile. Now supports WebL • JRUN. Available for IIS waiter.
• WebSphere. IBM’s WebSphere really big application server now implements JSP.
Developing first JSP
Java Server Pages are save with. jsp extension. Following codification which generates a simple hypertext markup language page.
Execute the illustration.
First JSP page.
In jsp Java codifications are written between ” tags. So it takes the undermentioned signifier: In this illustration we have usage
Tutorials – Java Server Pages Technology
JavaServer Pages ( JSP ) engineering is the Java platform engineering for presenting dynamic content to net clients in a portable. secure and chiseled manner.
Java Server Pages
Java Server Pages ( JSP ) engineering is the Java platform engineering for presenting dynamic content to net clients in a portable. secure and chiseled manner. The Java Server Pages specification extends the Java Servlet API to supply web application developers with a robust model for making dynamic web content on the waiter utilizing HTML. and XML templets. and Java codification. which is secure. fast. and independent of waiter platforms. JSP has been built on top of the Servlet API and utilizes Servlet semantics. JSP has become the preferable petition animal trainer and response mechanism. Although JSP engineering is traveling to be a powerful replacement to basic Servlets. they have an evolutionary relationship and can be used in a concerted and complementary mode. Servlets are powerful and sometimes they are a spot cumbrous when it comes to bring forthing complex HTML. Most Servlets contain a small codification that handles application logic and a batch more codification that handles end product arranging. This can do it hard to divide and recycle parts of the codification when a different end product format is needed. For these grounds. web application developers turn towards JSP as their preferable Servlet environment.
Development of Web Applications
Over the last few old ages. web waiter applications have evolved from inactive to dynamic applications. This development became necessary due to some lacks in earlier web site design. For illustration. to set more of concern procedures on the web. whether in business-to-consumer ( B2C ) or business-to-business ( B2B ) markets. conventional web site design engineerings are non plenty. The chief issues. every developer faces when developing web applications. are: 1. Scalability – a successful site will hold more users and as the figure of users is increasing fastly. the web applications have to scale correspondingly. 2. Integration of informations and concern logic – the web is merely another manner to carry on concern. and so it should be able to utilize the same middle-tier and data-access codification.
3. Manageability – net sites merely maintain acquiring bigger and we need some feasible mechanism to pull off the ever-increasing content and its interaction with concern systems. 4. Personalization – adding a personal touch to the web page becomes an indispensable factor to maintain our client coming back once more. Knowing their penchants. leting them to configure the information they view. retrieving their past minutess or frequent hunt keywords are all of import in supplying feedback and interaction from what is otherwise a reasonably nonreversible conversation. Apart from these general demands for a business-oriented web site. the necessity for new engineerings to make robust. dynamic and compact server-side web applications has been realized. The chief features of today’s dynamic web waiter applications are as follows: 1. Serve HTML and XML. and stream informations to the web client
2. Separate presentation. logic and informations
3. Interface to databases. other Java applications. CORBA. directory and mail services 4. Make usage of application waiter middleware to supply transactional support. 5. Track client Sessionss Now let us hold a expression on the function of Java engineering and platform in this respect.
Java’s Role for Server Applications Sun Microsystems. holding consulted many adept spouses from other related IT industries. has come out with a figure of unfastened APIs for the engineerings and services on server side. This aggregation of APIs is named as Java 2 Enterprise Edition ( J2EE ) . The J2EE specification provides a platform for endeavor applications. with full API support for endeavor codification and warrants of portability between server executions. Besides it brings a clear division between codification which deals with presentation. concern logic and informations.
The J2EE specification meets the demands of web applications because it provides: 1. Rich interaction with a web waiter via Servlets and constitutional support for Sessionss available in both Servlets and EJBs. 2. The usage of EJBs to mirror the user interaction with informations by supplying automatic session and dealing support to EJBs runing in the EJB waiter. 3. Entity EJBs to stand for informations as an object and seamless integrating with the Java informations entree APIs 4. Flexible template-based end product utilizing JSP and XML
This household of APIs mean that the concluding web page can be generated from a user input petition. which was processed by a servlet or JSP and a session EJB. which represents the user’s session with the waiter. utilizing informations extracted from a database and set into an entity EJB. Thus. the Java revolution of portable codification and unfastened APIs is married with an development in bing merchandises such as database. application. mail and web waiters. The broad handiness of merchandises to run Java applications on the waiter has made this a fast-moving and really competitory market. but the indispensable compatibility through specifications. standard APIs and category libraries has held. This makes server-side Java a really exciting country.
Java Server Pages – An Overview
The Java Server Pages 1. 2 specification provides web developers with a model to construct applications incorporating dynamic web content such as HTML. DHTML. XHTML and XML. A JSP page is a text based papers incorporating inactive HTML and dynamic actions which describe how to treat a response to the client in a more powerful and flexible mode. Most of a JSP file is apparent HTML but it besides has. interspersed with it. particular JSP ticket. There are many JSP tickets such as:
• JSP directive denoted by
