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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