Server Side Programming

By: aathishankaran Emailed: 1700 times Printed: 2204 times    

Latest comments
By: rohit kumar - how this program is work
By: Kirti - Hi..thx for the hadoop in
By: Spijker - I have altered the code a
By: ali mohammed - why we use the java in ne
By: ali mohammed - why we use the java in ne
By: mizhelle - when I exported the data
By: raul - no output as well, i'm ge
By: Rajesh - thanx very much...
By: Suindu De - Suppose we are executing

Server Side Programming

A "request" in server-side processing refers to the transaction between a browser and the server.  When someone clicks or enters a URL, the browser sends a "request" to the server for that URL, and shows the data returned.  As a part of this "request", various data is available, including the file the browser wants from the server, and if the request is coming from pressing a SUBMIT button, the information the user has entered in the form fields.

The JSP "request" variable is used to obtain information from the request as sent by the browser.  For instance, you can find out the name of the client's host (if available, otherwise the IP address will be returned.)  Let us modify the code as shown:

    System.out.println( "Evaluating date now" );
    java.util.Date date = new java.util.Date();
Hello!  The time is now
    out.println( date );
    out.println( "<BR>Your machine's address is " );
    out.println( request.getRemoteHost());

A similar variable is "response".  This can be used to affect the response being sent to the browser.  For instance, you can call response.sendRedirect( anotherUrl ); to send a response to the browser that it should load a different URL.  This response will actually go all the way to the browser.  The browser will then send a different request, to "anotherUrl".  This is a little different from some other JSP mechanisms we will come across, for including another page or forwarding the browser to another page.

JSP Home | All JSP Tutorials | Latest JSP Tutorials

Sponsored Links

If this tutorial doesn't answer your question, or you have a specific question, just ask an expert here. Post your question to get a direct answer.

Bookmark and Share


Be the first one to add a comment

Your name (required):

Your email(required, will not be shown to the public):

Your sites URL (optional):

Your comments:

More Tutorials by aathishankaran
Web Security Issues
The Web User's Perspective
Server-side plug-Ins
The best way to avoid security vulnerabilities with new server
JavaScript Security
Window Object
Working with Status Bar Messages
Retrieving a Portion of a String
Referencing Windows
Math Object
Frame Object
Document Object
Closing Windows
Built-in Object in Javascript
Textarea Object

More Tutorials in JSP
LifecycleException: service.getName(): "Catalina"; Protocol handler start failed: ` Permission denied <null>:80
JSP Alert Example
JSP CheckBox Example
Uploading an Image to a Database using JSP
Uploading a file to a server using JSP
A JSP page that gets properties from a bean
The page Directive in JSP
The taglib, tag, include, attribute and the variable Directive in JSP
Declarations in JSP
Scriptlets and Expressions in JSP
Tag Libraries in JSP
The Request Object in JSP
The Response Object in JSP
The Out Object in JSP
The Session Object in JSP

More Latest News
Most Viewed Articles (in JSP )
What is JSP?
Server Side Programming
An Example Using Servlet Initialization and Page Modification Dates
Debugging Servlets
Checkbox Object
Select Object
Introduction to JSP expression language
The Basic Syntax Expression Language in JSP
Comparison operators in JSP
The Differences Between Simple and Classic Tags in JSP
Steps to get a Free SSL certificate for your Tomcat
Sending Email using JSP
Getting HTTP Request Headers in a JSP
Most Emailed Articles (in JSP)
Declaring variable in JSP
What is JSP?
Cookies using JSP or Java Bean
Click to Activate and Use this control
The JSP Program running first Time.
Server Side Programming
Syntax For JSP Declaratives
Embedding java codes in jsp sciptlets
Tags using in jsp
JSP pages in servlet
Combining Scriptlets with HTML
JSP Directives
Form processing in JSP
JSP Program for display Date