Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package Controllers; import Entity.Category; import Entity.Item; import Entity.User; import Repositories.ItemRepository; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.List; 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 javax.servlet.http.HttpSession; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; /** * * @author shan */ @WebServlet(name = "AddItem", urlPatterns = { "/addItem" }) public class AddItem extends HttpServlet { /** * Processes requests for both HTTP <code>GET</code> and <code>POST</code> * methods. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); try (PrintWriter out = response.getWriter()) { /* TODO output your page here. You may use following sample code. */ out.println("<!DOCTYPE html>"); out.println("<html>"); out.println("<head>"); out.println("<title>Servlet ItemAdd</title>"); out.println("</head>"); out.println("<body>"); out.println("<h1>Servlet ItemAdd at " + request.getContextPath() + "</h1>"); out.println("</body>"); out.println("</html>"); } } // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> /** * Handles the HTTP <code>GET</code> method. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ArrayList<Category> categories = ItemRepository.getCategories(); request.setAttribute("categories", categories); request.getRequestDispatcher("dashboard/addItem.jsp").forward(request, response); } /** * Handles the HTTP <code>POST</code> method. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String name = null; String itemCode = null; String price = null; String quantity = null; String category = null; String image = null; HttpSession session = request.getSession(true); User user = (User) session.getAttribute("user"); if (user == null) { response.sendRedirect("login"); return; } // request.getServletContext().getRealPath("/uploads"); String path = request.getServletContext().getRealPath("/uploads"); System.out.println(path); if (ServletFileUpload.isMultipartContent(request)) { try { List<FileItem> multiparts = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request); for (FileItem item : multiparts) { if (!item.isFormField()) { String fileName = new File(item.getName()).getName(); // new File(path).mkdirs(); File directory = new File(path + File.separator + fileName); image = fileName; item.write(directory); } else { if ("name".equals(item.getFieldName())) { name = item.getString(); } else if ("itemCode".equals(item.getFieldName())) { itemCode = item.getString(); } else if ("price".equals(item.getFieldName())) { price = item.getString(); } else if ("quantity".equals(item.getFieldName())) { quantity = item.getString(); } else if ("category".equals(item.getFieldName())) { category = item.getString(); } } } //File uploaded successfully System.out.println("done"); } catch (Exception ex) { ex.printStackTrace(); } } boolean status = ItemRepository.saveItem(name, itemCode, price, quantity, category, image, user); String message; if (status) { message = "Item saved successfully"; response.sendRedirect("dashboard"); } else { message = "Item not saved !!"; request.setAttribute("message", message); request.getRequestDispatcher("dashboard/addItem.jsp").forward(request, response); } } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }