There is a file cabinetList.jsp, from it you need to take the idCabinet./n parameter and redirect to another documentList.jsp so that documents that are in a certain Cabinet with your idCabinet are displayed after pressing the Access button.

<%@page contentType="text/html" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <script type="text/javascript" src="lifecycle/js/cabinetJS.js"></script> <title>Cabinets</title> </head> <body> <p>You are logged in as <%=session.getAttribute("name")%></p> <a href="DocumentList">Document List</a> <form action="${pageContext.request.contextPath}/logout" method="post"> <input type="submit" value="Logout" /> </form> <c:if test="${(not empty name) && (name1=='name1')}"> <form method="POST" action="" onsubmit="return setCabinet(this);"> <p>${answer}</p> <c:remove var="answer" scope="session" /> <table border="1"> <tr align="center" bgcolor="#E6E6E6"> <th>Cabinet ID</th> <th>Cabinet Name</th> <th>Owner Name</th> <th>Creation Date</th> </tr> <c:forEach items="${cabList}" var="cab"> <tr> <td><label><input type="radio" name="cabinet" onclick="setDocumentButton(this);" value="${cab.idCabinet}" > ${cab.idCabinet}</label></td> <td>${cab.nameCabinet}</td> <td>${cab.nameOwner}</td> <td>${cab.dateStorage}</td> </tr> </c:forEach> <tr> <td colspan="7"> <table class="buttons" style="width: 100%; text-align: center; border: none !important;"> <tr> <td><input type="submit" value="Edit" name="edit" disabled onclick="page='CabinetList'" /></td> <td><input type="submit" value="Delete" name="delete" disabled onclick="page='CabinetDelete'" /></td> <td><input type="submit" value="Add" name="add" onclick="page='CabinetList'" /></td> <td><input type="submit" value="Access" name="access" disabled onclick="page='DocumentList'" /></td> </tr> </table> </td> </tr> </table> </form> </c:if> <c:if test="${(empty name) || (name1!='name1')}"> <% response.sendRedirect("UserLogin"); %> </c:if>

Here is the CabinetList Servlet

 package com.jmd.cabinet.web; import java.io.IOException; import java.util.List; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.jmd.cabinet.data.Cabinet; import com.jmd.cabinet.services.CabinetService; import com.jmd.util.ServiceException; import com.jmd.util.web.GenericServlet; @WebServlet("/CabinetList") public class CabinetList extends GenericServlet { private static final long serialVersionUID = 1L; private CabinetService cabservices = null; public void init() { super.init(); if (connector != null) { cabservices = new CabinetService(connector); } } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String view; try { view = populateView(request); RequestDispatcher dispatcher = request.getRequestDispatcher(view); dispatcher.forward(request, response); } catch (ServiceException e) { e.printStackTrace(); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { if(request.getParameter("edit")!=null){ List<Cabinet> cabUpdateList; cabUpdateList = cabservices.getCabinetsById(Integer.parseInt(request.getParameter("cabinet"))); request.setAttribute("cabUpdateList", cabUpdateList); RequestDispatcher dispatcher = request.getRequestDispatcher("/WEB-INF/jsp/cabinet/createCabinet.jsp"); dispatcher.forward(request, response); }else if(request.getParameter("add")!=null){ String view; try { view = populateCreateJsp(request); RequestDispatcher dispatcher = request.getRequestDispatcher(view); dispatcher.forward(request, response); } catch (ServiceException e) { e.printStackTrace(); } }else if(request.getParameter("cancel")!=null){ doGet(request,response); }else if(request.getParameter("access")!=null){ HttpSession session = request.getSession(); session.setAttribute("idCabinet", "idCabinet"); response.sendRedirect("DocumentList"); } } private String populateView(HttpServletRequest request) throws ServiceException { if (cabservices == null) { request.setAttribute("errorMessage", "Service not initialised"); return "/WEB-INF/jsp/500.jsp"; } List<Cabinet> cabList; cabList = cabservices.getCabinets(); request.setAttribute("cabList", cabList); return "/WEB-INF/jsp/cabinet/cabinetList.jsp"; } private String populateCreateJsp(HttpServletRequest request) throws ServiceException { if (cabservices == null) { request.setAttribute("errorMessage", "Service not initialised"); return "/WEB-INF/jsp/500.jsp"; } return "/WEB-INF/jsp/cabinet/createCabinet.jsp"; } }

Here is the second servlet from DocumentList

 package com.jmd.document.web; import java.io.IOException; import java.io.InputStream; import java.util.List; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import javax.servlet.http.Part; import com.jmd.util.ServiceException; import com.jmd.document.services.DocumentService; import com.jmd.util.web.GenericServlet; import com.jmd.document.data.Document; import java.util.Date; import java.text.DateFormat; import java.text.SimpleDateFormat; @WebServlet("/DocumentList") public class DocumentList extends GenericServlet{ private static final long serialVersionUID = 1L; private DocumentService documentService = null; public void init(){ super.init(); if(connector != null){ documentService = new DocumentService(connector); } } protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{ String view; try{ view = populateView(request); RequestDispatcher dispatcher = request.getRequestDispatcher(view); dispatcher.forward(request, response); } catch (ServiceException e){ e.printStackTrace(); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{ if (request.getParameter("edit")!=null){ List<Document> docUpdateList; docUpdateList = documentService.getDocumentsById(Integer.parseInt(request.getParameter("document"))); request.setAttribute("docUpdateList", docUpdateList); RequestDispatcher dispatcher = request.getRequestDispatcher("/WEB-INF/jsp/document/createDocument.jsp"); dispatcher.forward(request, response); }else if(request.getParameter("add")!=null){ String view; try { view = populateCreateJsp(request); RequestDispatcher dispatcher = request.getRequestDispatcher(view); dispatcher.forward(request, response); } catch (ServiceException e) { e.printStackTrace(); } }else if(request.getParameter("create")!=null){ createDocument(request, response); } else if(request.getParameter("delete")!=null){ deleteDocument(request, response); }else if(request.getParameter("extend")!=null){ List<Document> docUpdateList; docUpdateList = documentService.getDocumentsById(Integer.parseInt(request.getParameter("Document"))); request.setAttribute("docUpdateList", docUpdateList); RequestDispatcher dispatcher = request.getRequestDispatcher("/WEB-INF/jsp/centraldepot/supliedocument.jsp"); dispatcher.forward(request, response); }else if(request.getParameter("cancel")!=null){ doGet(request,response); } } private void createDocument(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { Document document = new Document(); Date date = new Date(); DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd"); document.setNameDocument(request.getParameter("nameDocument")); document.setTipDocument(request.getParameter("tipDocument")); InputStream inputStream = null; Part filePart = request.getPart("file"); if (filePart != null){ document.setTipContent(filePart.getContentType()); document.setSizeContent((int) filePart.getSize()); inputStream = filePart.getInputStream(); } document.setAuthor(request.getParameter("author")); document.setKeyword(request.getParameter("keyword")) ; documentService.insertDocuments(document); response.sendRedirect("DocumentList"); } private void deleteDocument(HttpServletRequest request, HttpServletResponse response) throws IOException { documentService.removeDocuments(Integer.parseInt(request .getParameter("document"))); response.sendRedirect("DocumentList"); } private String populateView(HttpServletRequest request) throws ServiceException { if (documentService == null) { request.setAttribute("errorMessage", "Service not initialised"); return "/WEB-INF/jsp/500.jsp"; } List<Document> docList; HttpSession session = request.getSession(); session.getAttribute("idCabinet"); docList = documentService.getDocuments(); request.setAttribute("docList", docList); return "/WEB-INF/jsp/document/documentList.jsp"; } private String populateCreateJsp(HttpServletRequest request) throws ServiceException { if (documentService == null) { request.setAttribute("errorMessage", "Service not initialised"); return "/WEB-INF/jsp/500.jsp"; } return "/WEB-INF/jsp/document/createDocument.jsp"; } }

documentList.jsp

 <%@page contentType="text/html" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <script type="text/javascript" src="lifecycle/js/documentJS.js"></script> <title>Document</title> </head> <body> <p>You chose <%=session.getAttribute("idCabinet")%></p> <form action="${pageContext.request.contextPath}/logout" method="post"> <input type="submit" value="Logout" /> </form> <c:if test="${(not empty name) && (name1=='name1')}"> <form method="POST" action="" onsubmit="return setDocument(this);"> <input type="hidden" name="idCabinet" value="" /> <p>${answer}</p> <c:remove var="answer" scope="session" /> <table border="1"> <tr align="center" bgcolor="#E6E6E6"> <th>Document ID</th> <th>Document Name</th> <th>Tip Document</th> <th>Tip Continut</th> <th>Dimensiune Continut</th> </tr> <c:forEach items="${docList}" var="doc"> <tr> <td><label><input type="radio" name="document" onclick="setDocumentButton(this);" value="${doc.idDocument}" > ${doc.idDocument}</label></td> <td>${doc.nameDocument}</td> <td>${doc.tipDocument}</td> <td>${doc.tipContent}</td> <td>${doc.sizeContent}</td> </tr> </c:forEach>

<% response.sendRedirect ("UserLogin");%>

  • What are the javascript functions setDocumentButton() , setCabinet() , page variable? - Sergey
  • This doesn't seem like a weird session.setAttribute("idCabinet", "idCabinet"); ? - Sergey

1 answer 1

To do this, add the attribute you need to the session and go to the action or link to another page. You have done almost what you need.

 session.setAttribute("idCabinet", "idCabinet");

Only together the second "idCabinet" needed to specify a value, not a string.

  • so, and I need the value to be inserted based on the selected id, and it doesn't get to me how to do it - Eugene