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Post Method of the Form In JSP
This section provides you the best illustration of the post method of the form in JSP.

Post Method of the Form In JSP

This section provides you the best illustration of the post method of the form in JSP. The HTTP post method sends data to the server from the HTML form elements. This method does not show the value of elements of the HTML form in the query string in url. This method keeps all the data value of the HTML elements secure and safe because of not showing those in anywhere.

In this section, you will see that the following JSP program creates a form with a text box for your name field. If you click on the submit button, JSP code checks for fulfill your name field and after satisfying, it will show the entered name with the message like "Your username is: chandan." because here the username you have entered the "chandan".

There is no need to use POST method in the form. This method doesn't append the URL. This method is mostly used for the working with some sensitive data like the password regarding the username or any type of secret numbers such as credit card number. If you want to pass as parameters, POST method prevents these type of secret numbers because this method doesn't show any parameter's value in the url of the browser.

Here is the JSP code of the example:

<html>
	<head><title>Using Post Method in JSP Form.</title></head>

	<body>
		<form method="post">
			<table border="0" cellpadding="0" 
cellspacing="0">
				<tr>
					<td>Enter your name:
 </td>
					<td><input type="text"
 size="20" name="txtName" /></td>
				</tr>
				<tr>
					<td>&nbsp;</td>
					<td><input type="submit" 
name="B1" value="Submit" /><input type="reset" name="B2" value=
"Reset" /></td>
				</tr>
			</table>
		</form>
		<%
			if(request.getParameter("txtName")
 != null){
				if(request.getParameter("txtName").
equals(""))
					out.println("<html><font 
color=red>Please enter your name.</font></html>");
				else
					out.println("Your username 
is: " + request.getParameter("txtName"));
			}
		%>
	</body>
</html>

Output for the above page:

Image after submission the form:

Download UsingPostMethod.jsp file.

ť View all related tutorials

Related Tags: c io sed page tag if for example to exam ci e use in m ad age xa xamp s

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Current Comments

4 comments so far (post your own) View All Comments Latest 10 Comments:

your code helped me very much

Posted by James on Tuesday, 08.21.07 @ 14:53pm | #23839

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Hi,

This is site very to learn the J2EE technologies. But in the above example, description (Second Paragraph) about example is totally different from the code and sample screens.

Thanks
KCS

Posted by KCS on Monday, 08.6.07 @ 14:37pm | #22757

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A very brilliant code to studyu

Posted by nilesh on Saturday, 02.24.07 @ 13:58pm | #9438

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Your example was very helpful, and simple compared to servlets and JavaBeans.

Thanks :)

Posted by New_to_JSP on Monday, 02.5.07 @ 07:05am | #6073

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