Hello
My question is how to update data using webpage submit button?
![]()
In theory , i need to get parameter from field 1("getint") and after button Dispense[2] is clicked database data[3] is decremented by value from field 1. So for example if drug number 3 shows us quantity 21 and user wants dispense 4 boxes of aranesp drug field gonna be updated and 4 boxes are going to be decremented.
This is my code
Could anyone help me please?
My question is how to update data using webpage submit button?
In theory , i need to get parameter from field 1("getint") and after button Dispense[2] is clicked database data[3] is decremented by value from field 1. So for example if drug number 3 shows us quantity 21 and user wants dispense 4 boxes of aranesp drug field gonna be updated and 4 boxes are going to be decremented.
This is my code
<%@ page language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%
Connection conn = null;
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/database","root", "asdqwe");
%>
<html>
<head>
<title>Successfully Login by JSP</title>
<link rel="stylesheet" type="text/css" href="resources/css/maincss.css">
<link rel="stylesheet" type="text/css" href="resources/css/style_table.css">
</head>
<script type="text/javascript">
function menuLogOut()
{
document.location.href("logOut.jsp");
}
</script>
<body>
<div id="loggedas_stock_check">
<img src=img/logged_as.png border="0">
<div id=loggedas_nick_stock_check>
<%
out.print(session.getAttribute("suserid")+ "</b>"+"<br>");
%>
</div>
</div>
<div id="wyloguj_stock_check">
<a href="" onclick="javascript:menuLogOut();"><img src=img/logout.png border="0"></a>
</div>
<br>
<form method="post">
<table class="bordered">
<thead>
<tr>
<th>No</th>
<th>Drug Name</th>
<th>Strength</th>
<th>Quantity</th>
<th>Dis Qty</th>
</tr>
</thead>
<%
try
{
String query="select * from drugs";
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery(query);
while(rs.next())
{
%>
<tr>
<td><%=rs.getInt("drugid") %></td>
<td><%=rs.getString("drugname") %></td>
<td><%=rs.getString("strength") %></td>
<td><%=rs.getInt("drugquant") %></td>
<td><INPUT TYPE="TEXT" NAME="getint" SIZE="7">
<INPUT TYPE="SUBMIT" VALUE="Dispense" NAME="B1"></td>
</tr>
<%
}
%>
</table>
<%
rs.close();
stmt.close();
conn.close();
}
catch(Exception e)
{
e.printStackTrace();
}
%>
</form>
</body>
</html>
Could anyone help me please?