In this tutorial how to Read the Content of a Form using getParameterNames() method in Advance Java (J2EE) is shown.<\/p>\n
Code:<\/p>\n
index.html<\/p>\n
<html>
\n<head>
\n<title>Student Registration Form<\/title>
\n<meta charset=”UTF-8″>
\n<meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
\n<\/head>
\n<body>
\n<form action=”StudentRegistration” method=”POST”>
\n<center>
\n<table border=”1″>
\n<th colspan=”2″><center><h1>Student Registration Form<\/h1><\/center><\/th>
\n<tr><td>Name: <\/td><td><input type=”text” name=”nm”><\/td><\/tr>
\n<tr><td>Address: <\/td><td><textarea cols=”50″ rows=”5″ name=”add”><\/textarea><\/td><\/tr>
\n<tr><td>Contact No: <\/td><td><input type=”text” name=”cno”><\/td><\/tr>
\n<tr><td>Email Id: <\/td><td><input type=”text” name=”eid”><\/td><\/tr>
\n<tr><td>Date of Birth: <\/td><td><input type=”text” name=”dt”><\/td><\/tr>
\n<tr><td colspan=”2″><center><input type=”submit” value=”Submit”><\/center><\/td><\/tr>
\n<\/table>
\n<\/center>>
\n<\/form>
\n<\/body>
\n<\/html><\/p>\n
StudentRegistration.java<\/p>\n
import java.io.IOException;
\nimport java.io.PrintWriter;
\nimport javax.servlet.ServletException;
\nimport javax.servlet.http.HttpServlet;
\nimport javax.servlet.http.HttpServletRequest;
\nimport javax.servlet.http.HttpServletResponse;
\nimport java.util.*;<\/p>\n
public class StudentRegistration extends HttpServlet {
\nprotected void doPost(HttpServletRequest req, HttpServletResponse res)
\nthrows ServletException, IOException {
\nres.setContentType(“text\/html;charset=UTF-8”);
\ntry (PrintWriter out = res.getWriter()) {
\n\/* TODO output your page here. You may use following sample code. *\/
\nout.println(“<!DOCTYPE html>”);
\nout.println(“<html>”);
\nout.println(“<head>”);
\nout.println(“<title>Servlet StudentRegistration<\/title>”);
\nout.println(“<\/head>”);
\nout.println(“<body>”);
\nout.println(“<h1 align=center>Student Registration<\/h1> \\n”+”<table border=1 align=center> \\n”+ “<tr> \\n”+”<th>Parameter Name <th>Parameter Value(s)”);
\nEnumeration paramNames=req.getParameterNames();
\nwhile(paramNames.hasMoreElements())
\n{
\nString paramName=(String)paramNames.nextElement();
\nout.println(“<tr><td>”+paramName+”<\/td>”);
\nString[] paramValues=req.getParameterValues(paramName);
\nfor(String pv:paramValues)
\n{
\nout.println(“<td>”+pv+”<\/td><\/tr>”);
\n}
\n}
\nout.println(“<\/table>”);
\nout.println(“<\/body>”);
\nout.println(“<\/html>”);
\n}
\n}<\/p>\n
}<\/p>\n