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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