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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