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;































































































































































































































































}































































































































































































































































}































































































































































































































































































































































































































































































































No comments:

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