Below example shows how to print the data that is retrieved from a Form using a JSP and then passing it to a Servlet for printing it on the GUI.
What components are needed for this ?
- JSP Page with a form input
- A Controller
- Web Configuration file (web.xml)
JSP Page :
Below is the code for the JSP Page with a Form input. The Form has the below input fields.
- First name
- Last name
- City
The JSP Page code looks like below.
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>Welcome Page</title>
</head>
<body>
<form action="/Index" method="post">
<input type="text" name="fname"/><br>
<input type="text" name="lname"/>
<input type="text" name="city"/>
<input type="submit" value="submit">
</form>
</body>
</html>
Once we have the JSP with the Form data, we need to create the Controller. Below is the code for the controller.
ControllerServlet.java
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ControlServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String fname = request.getParameter("fname");
String lname = request.getParameter("lname");
String city = request.getParameter("city");
System.out.println("FirstName :"+ fname);
System.out.println("Lastname :"+ lname);
System.out.println("City :"+ city);
}
}
Once we have created the Controller, we need to map this in the web.xml file. Below is the code for the web.xml file for the servlet mapping.
web.xml
<servlet>
<servlet-name>controllerServlet</servlet-name>
<servlet-class>com.developersareana.ControllerServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>controllerServlet</servlet-name>
<url-pattern>/Index</url-pattern>
</servlet-mapping>
Hope this example helps you understand how you can pass the data from the JSP to a Servlet.
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ReplyDeleteThanks, this is generally helpful.
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