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> </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>
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Output for the above page:
Image after submission the form:
Download
UsingPostMethod.jsp file.
|
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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
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
A very brilliant code to studyu
Posted by nilesh on Saturday, 02.24.07 @ 13:58pm | #9438
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