<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<%!
public void jspInit() {
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
}
catch (ClassNotFoundException e) {
}
}
%>
Product Category Admin Page
Add, Update, Delete Categories
Add New Category
<%
String id = request.getParameter("id");
String category = request.getParameter("category");
String action = request.getParameter("action");
String sql;
StringBuffer categories = new StringBuffer(2048);
//Open the Categories table
try {
Connection con = DriverManager.getConnection("jdbc:odbc:JavaWeb");
Statement s = con.createStatement();
ResultSet rs;
if (action!=null && action.equals("add")) {
sql = "SELECT CategoryName FROM Categories WHERE CategoryName='" + category + "'";
rs = s.executeQuery(sql);
if (!rs.next()) {
sql = "INSERT INTO Categories (CategoryName) VALUES ('" + category + "')";
s.executeUpdate(sql);
}
else
out.println(category + " is already in the database");
}
else if (action!=null && action.equals("delete")) {
sql = "DELETE FROM Categories WHERE CategoryID=" + id;
s.executeUpdate(sql);
}
else if (action!=null && action.equals("update")) {
sql = "UPDATE Categories SET CategoryName='" + category + "'" +
" WHERE CategoryId=" + id;
s.executeUpdate(sql);
}
sql = "SELECT CategoryID, CategoryName FROM Categories ORDER BY CategoryName ASC";
rs = s.executeQuery(sql);
// Now list all categories plus the DELETE and UPDATE buttons
out.println("");
while (rs.next()) {
id = rs.getString(1);
category = rs.getString(2);
%>
|
|
|
<%
categories.append("\n");
}
out.println("
");
s.close();
con.close();
//Create a text file called Categories.txt in the specified folder
String path = "C:\\123data\\";
FileWriter fw = new FileWriter(path + "categories.txt");
fw.write(categories.toString());
fw.close();
}
catch (SQLException e) {
out.println(e.toString());
}
catch (Exception e) {
out.println(e.toString());
}
%>