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 org.mhi.servlets; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Date; import java.util.logging.Level; import java.util.logging.Logger; 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.FileUploadException; import org.apache.commons.io.IOUtils; import org.mhi.database.ServiceDelete; import org.mhi.database.ServiceQuery; import org.mhi.database.ServiceUpdate; import org.mhi.imageutilities.FileHandler; import org.mhi.persistence.ArtCat; import org.mhi.persistence.ArtMain; import org.mhi.persistence.Article; import org.mhi.persistence.ImgCat; import org.mhi.persistence.ImgGallery; @WebServlet("/admin/*") public class adminManager extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, FileUploadException { ServiceQuery query = new ServiceQuery(); ServiceUpdate update = new ServiceUpdate(); ServiceDelete delete = new ServiceDelete(); String sDelete = request.getParameter("delete"); String sUpdate = request.getParameter("update"); String sCreate = request.getParameter("create"); String sUri = request.getRequestURI(); boolean osp = false; boolean wsp = false; /* Create - Erstellen neuer Inhalte ................................... */ if (sCreate != null) { FileHandler fh = new FileHandler(request); /* Convert "on" "off" to boolean; */ if (fh.getParameter("osp") != null) { if (fh.getParameter("osp").equals("on")) { osp = true; } } if (fh.getParameter("wsp") != null) { if (fh.getParameter("wsp").equals("on")) { wsp = true; } } switch (sCreate) { case "group": ArtMain main = new ArtMain(); main.setName(fh.getParameter("group")); update.newGroup(main); request.getRequestDispatcher("/admin/creategroup.jsp").forward(request, response); break; case "ugroup": ArtMain artma = query.getGroupByID(Long.parseLong(fh.getParameter("mainGroup"))); ArtCat artcat = new ArtCat(); artcat.setMain(artma); artcat.setName(fh.getParameter("ugroup")); update.newCatGroup(artcat); request.getRequestDispatcher("/admin/creategroup.jsp").forward(request, response); break; case "article": ArtCat cat = query.getCatAListByID(Long.parseLong(fh.getParameter("selectCategory"))); Article article = new Article(); article.setCategory(cat); article.setTitel("Title 1"); article.setText(fh.getParameter("article")); article.setOnlyStartPage(osp); article.setWithStartPage(wsp); article.setTimeStmp(new Date()); update.newArticle(article); request.getRequestDispatcher("/admin/article").forward(request, response); break; case "gallery": ImgGallery gal = new ImgGallery(); gal.setName(fh.getParameter("xs_gallery")); //gal.setDescription(fh.getParameter("xs_desc")); update.newGallery(gal); response.sendRedirect(request.getServletContext().getContextPath() + "/admin/gallery"); break; case "category": if (fh.getParameter("gallery") != null && fh.getParameter("xs_category") != null && fh.getFile("files") != null) { ImgGallery c_gal = query.getGalleryByID(Long.parseLong(fh.getParameter("gallery"))); ImgCat c_cat = new ImgCat(); c_cat.setName(fh.getParameter("xs_category")); //c_cat.setDescription(fh.getParameter("newDescription")); c_cat.setFileBlob(IOUtils.toByteArray(fh.getFile("files"))); c_cat.setGallery(c_gal); update.newCategory(c_cat); } response.sendRedirect(request.getServletContext().getContextPath() + "/admin/category"); break; default: /* Fehlermeldung */ } } /** * For All Group Interactions */ if (sUri.endsWith("/action")) { // Delete Group / Untergroup if (sDelete != null) { if (request.getParameter("ugrp") != null) { delete.removeCatAList(query.getCatAListByID(Long.parseLong(sDelete))); } else { delete.removeGroup(query.getGroupByID(Long.valueOf(sDelete))); } request.getRequestDispatcher("/admin/creategroup.jsp").forward(request, response); } if (sUpdate != null) { FileHandler fh = new FileHandler(request); Article article = query.getArticleByID(Long.parseLong(sUpdate)); article.setText(fh.getParameter("article")); update.updateArticle(article); response.sendRedirect("/z1/about"); } } } // <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 { try { processRequest(request, response); } catch (FileUploadException ex) { System.out.println("ERROR"); Logger.getLogger(adminManager.class.getName()).log(Level.SEVERE, null, ex); } } /** * 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 { try { processRequest(request, response); } catch (FileUploadException ex) { Logger.getLogger(adminManager.class.getName()).log(Level.SEVERE, null, ex); } } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }