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. */ import catalogbeans.productbean; import java.io.File; import java.io.IOException; import java.util.Iterator; import java.util.List; import javax.servlet.ServletContext; 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 org.apache.commons.fileupload.DiskFileUpload; import org.apache.commons.fileupload.FileItem; /** * * @author real-team */ @WebServlet(urlPatterns = { "/productupdate" }) public class productupdate extends HttpServlet { String productid, productname, categoryid, image, status, description, price; HttpServletRequest request; void getformdata() { try { ServletContext x = this.getServletContext(); String path = x.getRealPath("/images"); System.out.println(path + " path"); DiskFileUpload p = new DiskFileUpload(); List q = p.parseRequest(request); Iterator z = q.iterator(); while (z.hasNext()) { FileItem f = (FileItem) z.next(); if (f.isFormField() == true) { //non-file data String h = f.getFieldName(); String data = f.getString(); if (h.equalsIgnoreCase("productid")) { productid = data; } else if (h.equalsIgnoreCase("productname")) { productname = data; } else if (h.equalsIgnoreCase("category")) { categoryid = data; } else if (h.equalsIgnoreCase("price")) { price = data; } else if (h.equalsIgnoreCase("description")) { description = data; } else if (h.equalsIgnoreCase("status")) { System.out.println("status " + status); status = data; } } else { //file data String filename = f.getName(); if (filename != null && filename.length() > 0) { File g = new File(filename); filename = g.getName(); //creating unique file name long w = System.currentTimeMillis(); filename = w + filename; System.out.println("path " + path + " file " + filename); //upload file File t = new File(path, filename); f.write(t); if (f.getFieldName().equals("image")) { System.out.println("images " + image); image = filename; } } } } } catch (Exception e) { e.printStackTrace(); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.request = request; getformdata(); int chk = 0; productbean product = new productbean(); product.setProductid(productid); product.setCategoryid(categoryid); product.setDescription(description); product.setImage(image); product.setPrice(price); product.setStatus(status); product.setProductname(productname); if (image == null) chk = 1; int count = product.modify(chk); if (count == 1) { response.sendRedirect("admin/showproducts.jsp?categoryid=" + categoryid); } } // }