How to use logic:present tag in struts el tag

Question

Hi
I am trying to use struts el tags in the jsp page.I am struggling with the following exception: Cannot find bean: "result" in any scope.I couldn't understand why this error is coming even i had the property "result" in my ActionForm.
ActionForm:
package com.finocus.cam.struts.bean;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import com.finocus.cam.common.ValidateFormat;
public class DetailsForm extends org.apache.struts.action.ActionForm {
     private final static String LOG_TAG = DetailsForm.class.getName() + ".";
     private static final long serialVersionUID = 1L;
     // VARIABLES DECLARATION
     private String name = null;
     private String searchField = null;
     private String searchCriteria = null;
     private String phonenumber = "";
     private String email = "";
     private List results = null;
     private String adminUserName = "";
     private String adminUserEmail = "";
     public DetailsForm() {
     // GETTER AND SETTER METHODS
     public String getName() {
          return name;
     public void setName(String name) {
          this.name = name;
     public String getSearchCriteria() {
          return searchCriteria;
     public void setSearchCriteria(String searchCriteria) {
          this.searchCriteria = searchCriteria;
     public String getSearchField() {
          return searchField;
     public void setSearchField(String searchField) {
          this.searchField = searchField;
     public String getEmail() {
          return email;
     public void setEmail(String email) {
          this.email = email;
     public List getResults() {
          return results;
     public void setResults(List results) {
          this.results = results;
     public String getPhonenumber() {
          return phonenumber;
     public void setPhonenumber(String phonenumber) {
          this.phonenumber = phonenumber;
     public String getAdminUserEmail() {
          return adminUserEmail;
     public void setAdminUserEmail(String adminUserEmail) {
          this.adminUserEmail = adminUserEmail;
     public String getAdminUserName() {
          return adminUserName;
     public void setAdminUserName(String adminUserName) {
          this.adminUserName = adminUserName;
     // DUMPING THE VALUES IN THE CONSOLE
     public void dumpValues() {
          StringBuffer sb = new StringBuffer();
          sb.append("Name'");
          sb.append(name);
          sb.append("SearchField");
          sb.append(searchField);
          sb.append("searchCriteria");
          sb.append(searchCriteria);
          sb.append("'");
          sb.append(" ");
          System.out.println(sb.toString());
     // RESET() METHOD IS USED FOR STORE FORM'S CURRENT VARIABLES DECLARATION
     public void reset(ActionMapping actionMapping, HttpServletRequest request) {
          System.out.println("reset() method is called");
          this.email = null;
          this.searchCriteria = null;
          this.searchField = null;
          this.results = null;
     // VALIDATE() METHOD IS USED TO VALIDATE THE FORM DATA
     public ActionErrors validate(ActionMapping actionMapping,
               HttpServletRequest request) {
          ActionErrors errors = new ActionErrors();
          System.out.println("Validate()is called");
          // Determine if name has been entered.
          if (getName() == null || getName().length() == 0
                    || getName().equals(" ")) {
               errors.add("accountText", new ActionError("searchText.error"));
          } else if ((getSearchField().equals("name") == true)
                    && (ValidateFormat.isValidText(getName()) == false)) {
               errors.add("validAccountName", new ActionError("validName.error"));
          if (getSearchField() == null || getSearchField().length() == 0) {
               errors.add("accountSearchField", new ActionError(
                         "searchField.error"));
          } else if ((getSearchField().equals("email") == true)
                    && (ValidateFormat.isValidEmail(getName()) == false)) {
               errors
                         .add("validAccountEmail", new ActionError(
                                   "validEmail.error"));
          } else if ((getSearchField().equals("phonenumber") == true)
                    && (ValidateFormat.isValidPhoneNoFormat(getName()) == false)) {
               errors.add("validPhoneFormat", new ActionError(
                         "validPhoneFormat.error"));
          if ((getSearchField().equals("searchallfields"))
                    && ((ValidateFormat.isValidText(getName()) == false)
                              && (ValidateFormat.isValidEmail(getName()) == false) && (ValidateFormat
                              .isValidPhoneNoFormat(getName()) == false))) {
               errors.add("validNameEmail",
                         new ActionError("validNameEmail.error"));
          return errors;
Action class:
package com.finocus.cam.struts.action;
import java.util.ArrayList;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.finocus.cam.db.CAMDbAccess;
import com.finocus.cam.struts.bean.DetailsForm;
public class DetailsAction extends org.apache.struts.action.Action implements
          com.finocus.cam.common.CAMConstants {
     private final static String LOG_TAG = DetailsAction.class.getName() + ".";
     // Global Forwards
     public static final String GLOBAL_FORWARD_search = "login";
     // Local Forwards
     public static final String SUCCESS_search = "success";
     private boolean dumpRequestParams = true;
     public DetailsAction() {
     public ActionForward execute(ActionMapping mapping, ActionForm form,
               HttpServletRequest request, HttpServletResponse response)
               throws Exception {
          System.out.println("SearchAccount execute() is called");
          HttpSession session = request.getSession(true);
          ArrayList results = null;
          DetailsForm search = (DetailsForm) form;
          String name = search.getName();
          String searchField = search.getSearchField();
          String searchCriteria = search.getSearchCriteria();
          // Dumping the values of input patameters
          if (dumpRequestParams == true) {
               request.setAttribute("SearchCriteria", searchCriteria);
               request.setAttribute("SearchField", searchField);
               request.setAttribute("Text", name);
               search.dumpValues();
          // Perform search based on what criteria and search Field was entered.
          CAMDbAccess dbAccess = CAMDbAccess.getInstance();
          if (null != searchCriteria && searchField != null) {
               System.out.println("Search Criteria =" + searchCriteria
                         + "Selected Option =" + searchField);
               if (searchCriteria.equals(Search_Account) && searchField != null) {
                    results = dbAccess.searchByAccountInfo(name, searchCriteria,
                              searchField);
                    System.out.println(" Search criteria :Exact Match was selected.<BR>");
          // Place search results in SearchForm for access by JSP.
          search.setResults(results);
          // Forward control to this Action's input page.
          return mapping.findForward(SUCCESS_search);
My jsp page:
<%@ taglib uri="/WEB-INF/tld/struts-bean" prefix="bean" %>
<%@ taglib prefix="logic" uri="http://struts.apache.org/tags-logic-el" %>
<%@ taglib uri="/WEB-INF/tld/struts-html" prefix="html" %>
<html:html>
<head>
<title>Search Page</title>
</head>
<body colorants="LightGreen">
     <table width="100%" bgcolor="LightGreen">
          <tr>
               <td align="left"><font color="brown"><h3><b>Search Info</b></h3></font><hr></td>
          </tr>
               <tr>
          <td align="left"><h4><font color="brown"><b>Search Text:</b></font><%=request.getAttribute("Text")%></h4></td>
               </tr><tr>
          <td align="left"><h4><font color="brown"><b>Search Field:</b></font><%=request.getAttribute("SearchField")%></h4></td>
          </tr><tr>
               <td align="left"><h4><font color="brown"><b>Search Criteria:</b></font><%=request.getAttribute("SearchCriteria")%></h4></td>
               </tr><tr>
               <html:form action="/results.do">
                    <td><center><html:submit value="AllSearchOptions " /></center></td>
                    </html:form>
               </tr>
          <tr>
               <td align="left"><font color="brown"><hr><h2><b>Search Results</b></h2></font></td>
          </tr>
          <tr>
          <td>
          <table border="1" cellspacing="1" cellpadding="3" width="70%"
               bgcolor="white">
               <logic:present name="searchbyaccount" property="results">
               Results exists
                    <c:if test="${size==0 }">
               <center><font color="red"><b>No Results Found</b></font></center>
               </c:if>
               <br>
                    <c:if test="${size>0}">
                    Size is greater than ZERO
                         <table border="1" cellspacing="1" cellpadding="3" width="70%"
                              bgcolor="white">
                              <tr>
                                  <th>Customerid</th>
                                   <th>First Name</th>
                                   <th>Last Name</th>
                                   <th>Email</th>
                                   <th>phone Number</th>
                                   <th>Details</th>
                              </tr>
                                   <c:forEach var="result" items="${results}">
                                    <c:out value="${result}"/>
                                   <tr>
                                        <td><bean:write name="result" property="customerid"></bean:write></td>
                                        <td><bean:write name="result"
                                             property="accountAdminFirstName"></bean:write></td>
                                        <td><bean:write name="result"
                                             property="accountAdminLastName" /></td>
                                        <td><bean:write name="result" property="accountability" /></td>
                                        <td><bean:write name="result" property="accountAdminPhone" /></td>
                                        <td><html:form action="/accountDetails.do">
                                                  <html:submit value="Details" />
                                        </html:form></td>
                                   </tr>
                              </c:forEach>
                         </table>
                    </c:if>
          </logic:present>
          </table>
          </td>
          </tr>
     </table>
</body>
</html:html> Please refer me where i done a mistake.Thanks in Advance

Answer 1

hi all,
I am doing programs in sturts. My program
My program purpose is to retrieve data from the
database.My database is MySql. I know that we can
write connection code in Action Class, it is ok for
some less prog's if i want to use the sane connection
code in more Action Classes it is vasting time and
so.I don't think it's a good idea to put database code in Action classes. (That's one of the biggest drawbacks of Struts - it's completely tied to Actions, HTTP, and the Web.) Better to move that code into plain old Java objects and let the Actions call them.
You'll be able to test them without the container or Struts, and you'll be able to reuse those objects in other, non-Web contexts.
So i want to use <data-sources> tag that is available
in struts-config.xml. I know that thre is tag withThis is the wrong place to configure a connection pool, too. Struts should have nothing to do with it. What if you change Web frameworks to WebWork or Spring? The connection pool should be configured in the container that hosts your app, not Struts.
this name, but the problem is i don't know how to use
this tag. If any budy know how to use this please
tell me the syntax or any example.
plese... reply soon..Don't do it. Think about doing it in your container, not Struts.
%