Watch “JSP Part-7 | Use Bean Example-1 (Gujarati)” on YouTube

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#Java #JSP #jsp:useBean #RaviROza

✔️ jsp:useBean standard action tag is use to establish a connection between a jsp page and a java bean.
✔️ In web applications of java, jsp and java bean communication is required in the following two cases: 1️⃣In a real-time MVC project, a model class (business class) will set the data to a java bean and a jsp (view) will read the data from a bean and finally displays it on the browser. 2️⃣If multiple jsp pages need common java logic then it separates that java code into a bean and then we call the bean from jsp.

Video features the following:
👉 How to define Bean class in java
👉 How to use bean class in JSP scriplet
👉 How to use bean using jsp:useBean

It contains the following files
👉 Index.jsp 👉 process.jsp 👉 UserBean.java

Index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>JSP Static Login using Bean</title>
</head>
<body>

<form action="process.jsp">

Username : <input type="text" name="txtUser">
Password :  <input type="password" name="txtPass">
<input type="submit">
</form>

</body>
</html>

process.jsp

<%@page import="com.raviroza.beans.UserBean"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>JSP : Using Beans</title>
</head>
<body>
<p>Using JSP:useBean tag
<%
// 	String u = request.getParameter("txtUser");
// 	String p = request.getParameter("txtPass");
	
// 	UserBean user = new UserBean();
// 	user.setUsername(u);
// 	user.setPassword(p);
	%>
<jsp:useBean id="userobj" class="com.raviroza.beans.UserBean"/>
	
<jsp:setProperty property="username" name="userobj" value="ravi r oza"/>
<jsp:setProperty property="password" name="userobj" value="my password"/>

<h2>using get property</h2>
<jsp:getProperty property="username" name="userobj"/>

</body>
</html>

UserBean.java

package com.raviroza.beans;

public class UserBean implements java.io.Serializable 
{
	private String username,password;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}	
	public boolean validate()
	{
		if(username.equals("admin") && password.equals("admin"))
		{
			return true;
		}
		else 
		{
			return false;
		}
	}
}

OS : Windows 10
Jdk : Version 8
IDE : Eclipse Mars
Server : Apache Tomcat 7

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