Thursday, January 1, 2015

Simple web application not working
































































I am trying to develop a new web application which takes in data from a form and stores data in a database.I have included all the three files join.jsp(the form which takes in data),reg.java(servlet) and JavaConncetDb(method which connects db and servlet).Please do look through and let me know my mistake. I get a 404 error when i try load the web application.Please help me as i beginner in java and trying to learn new things, i am stuck here since a long time
































































































































My file structure in eclipse
































































Simple web application not working-untitled.jpg
































































































































The error I am getting
































































Simple web application not working-error.jpg
































































join.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://ift.tt/kTyqzh">































































<html>































































<head>































































<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">































































<title>Insert title here</title>































































</head>































































<body bgcolor="red">































































<form name="register" action="register" method=post>































































<p>FIRSTNAME <input type="text" name="firstname"><br>































































<p>LASTNAME <input type="text" name="lastname">































































<p>EMAILID <input type="text" name="emailid">































































<p>USERNAME<input type="text" name="username">































































<p>PASSWORD<input type="password" name="password"><br>































































<input type="submit" value="submit">
































































</form>
































































</body>































































</html>
































































reg.java(servlet)
































































package logintesting;
































































import java.io.IOException;































































import java.io.PrintWriter;































































import java.sql.Connection;































































import java.sql.SQLException;
































































import javax.servlet.ServletException;































































import javax.servlet.annotation.WebServlet;































































import javax.servlet.http.HttpServlet;































































import javax.servlet.http.HttpServletRequest;































































import javax.servlet.http.HttpServletResponse;
































































import oracle.jdbc.OraclePreparedStatement;
































































/**































































* Servlet implementation class reg































































*/































































@WebServlet("/reg")































































public class reg extends HttpServlet {































































private static final long serialVersionUID = 1L;
































































/**































































* @see HttpServlet#HttpServlet()































































*/































































public reg() {































































super();































































// TODO Auto-generated constructor stub































































}
































































/**































































* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)































































*/































































protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {































































// TODO Auto-generated method stub































































}
































































/**































































* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)































































*/































































protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {































































// TODO Auto-generated method stub
































































PrintWriter out=response.getWriter();































































response.setContentType("text/html");































































String firstname,lastname,email,username,password;































































firstname=request.getParameter("firstname").toStri ng();































































lastname=request.getParameter("lastname").toString ();































































email=request.getParameter("emailid").toString();































































username=request.getParameter("username").toString ();































































password=request.getParameter("password").toString ();































































Connection con=JavaConnectDb.connectDb();































































try{































































String sql="insert into reg values('"+firstname+"','"+lastname+"','"+email+"', '"+username+"','"+password+"')";































































OraclePreparedStatement pst= (OraclePreparedStatement) con.prepareStatement(sql);































































pst.execute();































































out.println("register successfully");































































}































































catch(Exception e)































































{































































out.println(e);































































}
































































finally{
































































try {































































con.close();































































} catch (SQLException e) {































































// TODO Auto-generated catch block































































e.printStackTrace();































































}































































}
































































}































































}
































































javaconnect.java(method used in servlet to conncet to database)































































package logintesting;
































































import java.sql.Connection;































































import java.sql.DriverManager;
































































public class JavaConnectDb {
































































public static Connection connectDb()































































{































































Connection conn=null;
































































try{































































Class.forName("oracle.jdbc.driver.OracleDriver");































































conn=DriverManager.getConnection("jdbc:oracle:thin :@localhost:1521:orcl","SYSTEM","oracle");































































}































































catch(Exception e)































































{































































System.err.println(e);































































}































































return conn;































































}































































}































































































































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