JSP request implicit Object
JSP request Object is the instance of javax.servlet.http.HttpServletRequest. This object is used to get the HTTP header information, data entered on previous JSP page etc.
Example:
login.jsp
<html>
<head>
<title>login</title>
</head>
<body>
<form action="welcome.jsp">
<input type="text" name="userName" />
<input type="submit" value="login"/>
</form>
</body>
</html>
|
welcome.jsp
<html>
<head>
<title>request implicit object example</title>
</head>
<body>
<%
String userName=request.getParameter("userName");
if(userName.equals("jai")){
out.print("Welcome " + userName + ",
You are successfully logged in.");
}else{
out.print("Wrong username.");
}
%>
</body>
</html>
|
web.xml
<web-app>
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
</web-app>
|
Output:

Enter UserName: jai
Click on login button.