Week 12 code

<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>

<form action="index.jsp" method="post">

First Name: <input type="text" name="firstName"><br>
Last Name: <input type="text" name="lastName"><br>
Email Address: <input type="text" name="emailAddress"><br>

<input type="submit" Value="Submit">
</form>
</body>
</html>

<%@pagecontentType="text/html" pageEncoding="UTF-8"%>
<%@page import="java.sql.*, business.User, javax.servlet.*, java.io.*, javax.servlet.http.*, java.sql.*,
java.util.*, util.SQLDBUtil" %>

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>mySQL</h1>
<%
User user;
try {
String dbUrl = "jdbc:mysql://localhost:3306/murach";
String username = "root";
String password = "sesame";
String query = "SELECT * FROM murach.user";
String userName = "";
SQLDBUtilutil = new SQLDBUtil();

ArrayList<User> users = new ArrayList<User>();

//insert a new record

util.insertUser(request.getParameter("firstName"),request.getParameter("lastName"),request.getParamet
er("emailAddress"));

Connection conn = DriverManager.getConnection(dbUrl, username, password);
PreparedStatementps = conn.prepareStatement(query);
Statement statement = conn.createStatement();
ResultSetrs = statement.executeQuery(query);
while(rs.next())
{

user = new User(rs.getString(2),rs.getString(3),rs.getString(4));
users.add(user);
//userName = user.getFirstName();
}
rs.close();

Iterator it = users.iterator();
User tempUser;

%>
<table cellpadding="5" cellspacing="5" border =" 1">
<%
while(it.hasNext())
{

tempUser = (User) it.next();

%>
<tr>

<td>First Name:</td>
<td><%= tempUser.getFirstName() %></td>
<td> Last Name: </td>
<td><%= tempUser.getLastName() %></td>
<td> Email Address: </td>
<td><%= tempUser.getEmailAddress() %></td>
<br>
</tr>

<%
}
%>

</table>

<%

} catch (SQLException e)

{
for (Throwable t : e)
t.printStackTrace();
} finally
{

}

%>
</body>
</html>

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package business;
/**
*
* @author tpersson
*/
public class User {

String firstName, lastName, emailAddress;

public User ()
{
}

public User (String first, String last, String email)
{
firstName = first;
lastName = last;
emailAddress = email;

}

public String getFirstName()
{
return firstName;
}
public String getLastName()
{
return lastName;
}
public String getEmailAddress()
{
return emailAddress;
}

}

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package util;
importjava.sql.*;
import business.User;
import javax.servlet.*;
import java.io.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.*;
/**
*
* @author tpersson
*/
public class SQLDBUtil{
String dbUrl = "jdbc:mysql://localhost:3306/murach";
String username = "root";
String password = "sesame";
String query = "";
//connection objects
Connection conn;
PreparedStatementps;
Statement statement;
publicSQLDBUtil() {
}
public void insertUser(String first, String last, String email)
{
//query = "INSERT INTO murach.user('',first, last, email)";
query = "INSERT into murach.user (FirstName,LastName,EmailAddress) values ('" + first + "','" +
last + "','" + email + "')";
runQuery(query);
}
public void updateUser(String first, String last, String email)
{

if(doesExist(email))
{
query = "UPDATE murach.user SET FirstName ='"+ first
+"',LastName='"+last+"',EmailAddress='"+email2 +"' WHERE EmailAddress='" + email +"'";
runQuery(query);
}
else
{
//out.printLine("No record with that email address");
}
}

private void connectDb()
{
try {
conn = DriverManager.getConnection(dbUrl, username, password);
} catch (SQLException e)
{
} finally
{
}
}
private void runQuery(String q) {
try {
connectDb();
PreparedStatementps = conn.prepareStatement(query);
Statement statement = conn.createStatement();
ps.executeUpdate();
conn.close();

} catch (SQLException e) {
} finally {
}
}
private booleandoesExist(String email)
{
Boolean exists = false;
ResultSetrsCheck;
connectDb();
query="SELECT * FROM murach.User WHERE EmailAddress='" + email + "'";
try
{

ps = conn.prepareStatement(query);
statement = conn.createStatement();
rsCheck = statement.executeQuery(query);
rsCheck.last();

if(rsCheck.getRow()>0)
{
exists = true;
}

}
catch(SQLException e)
{

}
finally
{
return exists;

}

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