Field

Hidden Fields present on the pages are able to maintain the state. They are not able to be seen on browsers. The servers treat both non-hidden and hidden fields in similar way.

<INPUT type=”hidden” name=”Firstname” value=”Peter”>
<INPUT type=”hidden” name=”Lastname” value=”Smith”>

The hidden field’s disadvantage is that they might expose certain private or sensitive information, to others.

Updated 01-14-2012 at 05:56 PM by Servlet

Tags: hidden fields, servlet

Categories

Field

It is relatively easy to read headers. All you need to do is call the getHeader method of HttpServletRequest. If the specified header exists, the servlet returns a String, if not the servlet will return null. Unlike parameter names, header names are not case sensitive. Although getHeader is a general-purpose way to read incoming headers, there are a couple of headers that are so commonly used that they have special access methods in HttpServletRequest. They are listed below.

• getCookies

...

Tags: http requests, request headers, servlets

Categories

Tutorial , HTTP , Security , Field , Cookies