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:

jsp example 19 login

Enter UserName: jai
jsp example 19 value

Click on login button.
jsp example 19 display

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