I have problem when I submit my form to insert data the URL can't change and when I refresh it, the data reinsert
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String _1 = request.getParameter("company_name").toString();
String _2 = request.getParameter("city").toString();
String _3 = request.getParameter("state").toString();
String _4 = request.getParameter("zipcode").toString();
String _5 = request.getParameter("branch").toString();
String _6 = request.getParameter("address").toString();
Database db = (Database) getServletContext().getAttribute("db");
try {
String sql = "insert into company(company_name,city,state,zipcode,branch,company_address) values('"+_1+"','"+_2+"','"+_3+"','"+_4+"','"+_5+"','"+_6+"')";
db.updateSql(sql);
} catch (Exception e2) {
System.out.println(e2);
}
getServletContext().getRequestDispatcher("/company.jsp").forward(request, response);
}