struts-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Chris Pratt <thechrispr...@gmail.com>
Subject Re: iterable tag
Date Sat, 12 Jan 2013 21:04:57 GMT
You said in your original post that you used the <s:iterator> tag,
correct?  Can I see how you used it?
  (*Chris*)


On Sat, Jan 12, 2013 at 3:06 AM, fusillator <fusillator@gmail.com> wrote:

> Sorry for my misunderstanding, I changed the code of the wiki tutorial
> about wildcard
>
> These is the view:
>
> <%@ page language="java" contentType="text/html; charset=UTF-8"
>     pageEncoding="UTF-8"%>
> <%@ taglib prefix="s" uri="/struts-tags" %>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
> http://www.w3.org/TR/xhtml1/**DTD/xhtml1-transitional.dtd<http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>
> ">
> <html xmlns="http://www.w3.org/1999/**xhtml <http://www.w3.org/1999/xhtml>
> ">
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
> <title>List of people</title>
> </head>
> <body>
> <h3>List of persons:</h3>
> <s:if test="people.isEmpty">
> <ol>
> <s:iterator value="people">
> <li>
> <s:property value="firstName" /> <s:property value="lastName" />
> <s:url action="removePerson" var="urlremove"><s:param name="code"
> value="id" /></s:url>
> <s:url action="editPerson" var="urledit"><s:param name="code" value="id"
> /></s:url>
> <s:a href="%{urledit}">Edit</s:a>
> <s:a href="%{urlremove}">Remove</s:**a>
> </li>
> </s:iterator>
> </ol>
> </s:if>
> <s:else>
> No person inserted
> </s:else>
> <s:url action="editPerson" var="urlnew" />
> <s:a href="%{urlnew}">Insert a new person</s:a>
> </body>
> </html>
>
> and this is the action class:
>
> package org.apache.struts.tutorial.**wildcard.action;
>
> import java.util.Collection;
> //import java.util.List;
> import org.apache.struts.tutorial.**wildcard.service.**PersonService;
> import org.apache.struts.tutorial.**wildcard.model.Person;
> import org.apache.log4j.Logger;
> import com.opensymphony.xwork2.**ActionSupport;
>
> public class PersonAction extends ActionSupport {
>
>     private static final long serialVersionUID = 1L;
>
>     private static final Logger logger = Logger.getLogger(PersonAction.**
> class.getName());
>
>     private Collection<Person> people=PersonService.**getPeople();
>     private int code=-1; //parametro passato da view
>     private Person personBean;
>     private PersonService personService=new PersonService();
>
>     @Override
>     public String execute(){
>         return SUCCESS;
>     }
>
>     public String edit(){
>         setPersonBean(personService.**getPerson(code));
>         return INPUT;
>     }
>
>     public String save(){
>         personService.savePerson(**getPersonBean());
>         return SUCCESS;
>     }
>
>     public String remove(){
>         personService.removePerson(**code);
>         return SUCCESS;
>     }
>
>     public Collection<Person> getPeople() {
>         return people;
>     }
>
>     public void setPeople(Collection<Person> people) {
>         this.people = people;
>     }
>
>     public int getCode() {
>         return code;
>     }
>
>     public void setCode(int code) {
>         this.code = code;
>     }
>
>     public Person getPersonBean() {
>         return personBean;
>     }
>
>     public void setPersonBean(Person personBean) {
>         this.personBean = personBean;
>     }
>
> }
>
> and my modified PersonService class:
>
> package org.apache.struts.tutorial.**wildcard.service;
>
> //import java.util.ArrayList;
> import java.util.Collection;
> //import java.util.List;
> import java.util.SortedMap;
> import java.util.TreeMap;
>
> import org.apache.log4j.Logger;
> import org.apache.struts.tutorial.**wildcard.model.Person;
>
> public class PersonService {
>
>     private static final Logger logger = Logger.getLogger(**
> PersonService.class.getName())**;
>
>     //static private List<Person> peopleList=new ArrayList<Person>();
>     static private SortedMap<Integer,Person> people=new
> TreeMap<Integer,Person>();
>     static {
>         people.put(new Integer(1), new Person(1,"Paolino","Paperino")**);
>         people.put(new Integer(2), new Person(2,"Paperon","De Paperoni"));
>         people.put(new Integer(3), new Person(3,"Archimede","**
> Pitagorica"));
>         //generateList();
>     }
>     /*
>     static void generateList(){
>         peopleList.clear();
>         for (Integer i : people.keySet()){
>             peopleList.add(people.get(i));
>         }
>     }
>     */
>     static public Collection<Person> getPeople(){
>         logger.debug(people.values());
>         logger.debug(people.values().**getClass().toString());
>         return people.values();
>     }
>
>     public Person getPerson(int code){
>         if (code<0)
>             return new Person(-1,"","");
>         else
>             return people.get(new Integer(code));
>     }
>
>     public void savePerson(Person person){
>         logger.debug(person);
>         if (person.getId()>=0){
>             people.put(new Integer(person.getId()),**person);
>         } else {
>             int id = people.isEmpty() ? 1 : people.lastKey().intValue()+1;
>             person.setId(id);
>             people.put(new Integer(id),person);
>         }
>         //generateList();
>     }
>
>     public void removePerson(int code){
>         people.remove(new Integer(code));
>         //generateList();
>     }
>
> }
>
>
> The mapping definitions are:
>
> <action name="*Person" class="org.apache.struts.**
> tutorial.wildcard.action.**PersonAction" method="{1}">
>             <result name="success">/view.jsp</**result>
>             <result name="input">/input.jsp</**result>
> </action>
>
> The model Person is a pojo with 3 attributes: firstName, lastName, id
>
> thanks for the support
>
> Il 12/01/2013 11:50, Umesh Awasthi ha scritto:
>
>  I believe what *Chris* has asked is to copy the code from your JSP page
>>
>> i believe you must be using <s:iterator> tag in your JSP page to iterate
>> some list
>> so please copy that code from your JSP and provide here
>>
>>
>>
>> On Sat, Jan 12, 2013 at 4:16 PM, fusillator <fusillator@gmail.com> wrote:
>>
>>  Hi Chris, not really sure how to find that code... Anyway this has been
>>> my
>>> steps:
>>> $ for lib in /opt/struts-2.3.7/lib/* ; do jar tvf $lib | grep tld &&
echo
>>> $lib; done
>>>    3349 Wed Aug 10 12:51:32 CEST 2005 META-INF/sitemesh-decorator.****
>>> tld
>>>    3013 Sat May 15 11:55:14 CEST 2004 META-INF/sitemesh-page.tld
>>> /opt/struts-2.3.7/lib/****sitemesh-2.4.2.jar
>>> 346038 Tue Nov 06 08:13:06 CET 2012 META-INF/struts-tags.tld
>>> /opt/struts-2.3.7/lib/struts2-****core-2.3.7.jar
>>> 136496 Tue Nov 06 08:24:22 CET 2012 META-INF/struts-dojo-tags.tld
>>> /opt/struts-2.3.7/lib/struts2-****dojo-plugin-2.3.7.jar
>>>     752 Tue Nov 06 08:27:06 CET 2012 META-INF/tags/JsonPlugin.tld
>>> /opt/struts-2.3.7/lib/struts2-****json-plugin-2.3.7.jar
>>>       0 Tue May 13 21:39:54 CEST 2008 META-INF/tld/
>>>   27808 Tue May 13 21:39:54 CEST 2008 META-INF/tld/tiles-jsp.tld
>>> /opt/struts-2.3.7/lib/tiles-****jsp-2.0.6.jar
>>>
>>> $ jar xvf /opt/struts-2.3.7/lib/struts2-****core-2.3.7.jar
>>> META-INF/struts-tags.tld
>>>   \decompresso: META-INF/struts-tags.tld
>>>
>>> $ grep -n "<name>iterator</name>" META-INF/struts-tags.tld
>>> 4881:    <name>iterator</name>
>>>
>>> and the tag definition in the tld file is:
>>>
>>> <tag>
>>>      <description><![CDATA[Iterate over a iterable value]]></description>
>>>      <name>iterator</name>
>>> <tag-class>org.apache.struts2.****views.jsp.IteratorTag</tag-****class>
>>>      <body-content>JSP</body-****content>
>>>      <!-- here a lot of not interesting attributes-->
>>> </tag>
>>>
>>> $ find src -name IteratorTag.java
>>> src/core/src/main/java/org/****apache/struts2/views/jsp/****
>>> IteratorTag.java
>>>
>>> $ cat src/core/src/main/java/org/****apache/struts2/views/jsp/**
>>> IteratorTag.java
>>> /*
>>>   * $Id: IteratorTag.java 741179 2009-02-05 16:55:14Z musachy $
>>>   *
>>>   * Licensed to the Apache Software Foundation (ASF) under one
>>>   * or more contributor license agreements.  See the NOTICE file
>>>   * distributed with this work for additional information
>>>   * regarding copyright ownership.  The ASF licenses this file
>>>   * to you under the Apache License, Version 2.0 (the
>>>   * "License"); you may not use this file except in compliance
>>>   * with the License.  You may obtain a copy of the License at
>>>   *
>>>   *  http://www.apache.org/****licenses/LICENSE-2.0<http://www.apache.org/**licenses/LICENSE-2.0>
>>> <http://**www.apache.org/licenses/**LICENSE-2.0<http://www.apache.org/licenses/LICENSE-2.0>
>>> >
>>>   *
>>>   * Unless required by applicable law or agreed to in writing,
>>>   * software distributed under the License is distributed on an
>>>   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
>>>   * KIND, either express or implied.  See the License for the
>>>   * specific language governing permissions and limitations
>>>   * under the License.
>>>   */
>>>
>>> package org.apache.struts2.views.jsp;
>>>
>>> import javax.servlet.http.****HttpServletRequest;
>>> import javax.servlet.http.****HttpServletResponse;
>>> import javax.servlet.jsp.****JspException;
>>>
>>> import org.apache.struts2.components.****Component;
>>> import org.apache.struts2.components.****IteratorComponent;
>>>
>>> import com.opensymphony.xwork2.util.****ValueStack;
>>>
>>> /**
>>>   * @see IteratorComponent
>>>   */
>>> public class IteratorTag extends ContextBeanTag {
>>>
>>>      private static final long serialVersionUID = -1827978135193581901L;
>>>
>>>      protected String statusAttr;
>>>      protected String value;
>>>      protected String begin;
>>>      protected String end;
>>>      protected String step;
>>>
>>>      public Component getBean(ValueStack stack, HttpServletRequest req,
>>> HttpServletResponse res) {
>>>          return new IteratorComponent(stack);
>>>      }
>>>
>>>      protected void populateParams() {
>>>          super.populateParams();
>>>
>>>          IteratorComponent tag = (IteratorComponent) getComponent();
>>>          tag.setStatus(statusAttr);
>>>          tag.setValue(value);
>>>          tag.setBegin(begin);
>>>          tag.setEnd(end);
>>>          tag.setStep(step);
>>>      }
>>>
>>>      public void setStatus(String status) {
>>>          this.statusAttr = status;
>>>      }
>>>
>>>      public void setValue(String value) {
>>>          this.value = value;
>>>      }
>>>
>>>      public void setBegin(String begin) {
>>>          this.begin = begin;
>>>      }
>>>
>>>      public void setEnd(String end) {
>>>          this.end = end;
>>>      }
>>>
>>>      public void setStep(String step) {
>>>          this.step = step;
>>>      }
>>>
>>>      public int doEndTag() throws JspException {
>>>          component = null;
>>>          return EVAL_PAGE;
>>>      }
>>>
>>>      public int doAfterBody() throws JspException {
>>>          boolean again = component.end(pageContext.****getOut(),
>>> getBody());
>>>
>>>          if (again) {
>>>              return EVAL_BODY_AGAIN;
>>>          } else {
>>>              if (bodyContent != null) {
>>>                  try {
>>> bodyContent.writeOut(****bodyContent.****getEnclosingWriter());
>>>                  } catch (Exception e) {
>>>                      throw new JspException(e.getMessage());
>>>                  }
>>>              }
>>>              return SKIP_BODY;
>>>          }
>>>      }
>>>
>>> }
>>>
>>> Thanks a lot for your help.
>>>
>>>
>>>
>>>
>>>
>>> Il 11/01/2013 20:21, Chris Pratt ha scritto:
>>>
>>>  Can you cut and paste your <s:iterator> code into the email so we can
>>>> see?
>>>>     (*Chris*)
>>>>
>>>>
>>>> On Fri, Jan 11, 2013 at 11:12 AM, fusillator <fusillator@gmail.com>
>>>> wrote:
>>>>
>>>>   Hi all, I'm new to struts2/java matters, so be sympathetic please.
>>>>
>>>>> I've a question about <s:iterator> tag
>>>>>
>>>>> I recently used it to loop on a Iterable collection of type
>>>>> java.util.TreeMap$Values retrieved by the method
>>>>> java.util.TreeMap.values()
>>>>>
>>>>> getting the following cast exception:
>>>>>
>>>>> 2013-01-11 18:45:00,520 DEBUG org.apache.struts.tutorial.**
>>>>> wildcard.service.******PersonService.getPeople:33 [Person [1: Paolino
>>>>> Paperino], Person [2: Paperon De Paperoni], Person [3: Archimede
>>>>> Pitagorica]]
>>>>> 2013-01-11 18:45:00,523 DEBUG org.apache.struts.tutorial.**
>>>>> wildcard.service.******PersonService.getPeople:34 class
>>>>> java.util.TreeMap$Values
>>>>> 2013-01-11 18:45:00,523 DEBUG org.apache.struts.tutorial.**
>>>>> wildcard.service.******PersonService.getPeople:34 class
>>>>> java.util.TreeMap$Values
>>>>> gen 11, 2013 6:45:01 PM org.apache.jasper.compiler.*****
>>>>> *TldLocationsCache
>>>>> tldScanJar
>>>>> WARNING: Caught an exception while evaluating expression
>>>>> 'people.isEmpty'
>>>>> against value stack
>>>>> java.lang.ClassCastException: java.util.TreeMap$Values cannot be cast
>>>>> to
>>>>> java.util.Set
>>>>>           at ognl.SetPropertyAccessor.******getProperty(**
>>>>> SetPropertyAccessor.java:47)
>>>>>           at com.opensymphony.xwork2.ognl.******accessor.**
>>>>> XWorkCollectionPropertyAccesso******r.getProperty(**
>>>>> XWorkCollectionPropertyAccesso******r.java:93)
>>>>>           at ognl.OgnlRuntime.getProperty(******OgnlRuntime.java:2300)
>>>>>
>>>>> The used variable is reported by log4j.
>>>>> Is there any restriction on the iterator tags?
>>>>> Could someone suggest me a tutorial/howto about ognl/value stack?
>>>>>
>>>>> Best regards
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------******--------------------------**--**
>>>>> --**---------
>>>>> To unsubscribe, e-mail: user-unsubscribe@struts.****apac**he.org<
>>>>> http://apache.org**>
>>>>> <user-unsubscribe@**struts.**apache.org <http://struts.apache.org><
>>>>> user-unsubscribe@**struts.apache.org<user-unsubscribe@struts.apache.org>
>>>>> >
>>>>> For additional commands, e-mail: user-help@struts.apache.org
>>>>>
>>>>>
>>>>>
>>>>>  ------------------------------****----------------------------**
>>> --**---------
>>> To unsubscribe, e-mail: user-unsubscribe@struts.**apac**he.org<http://apache.org>
>>> <user-unsubscribe@**struts.apache.org<user-unsubscribe@struts.apache.org>
>>> >
>>> For additional commands, e-mail: user-help@struts.apache.org
>>>
>>>
>>>
>>
>
> ------------------------------**------------------------------**---------
> To unsubscribe, e-mail: user-unsubscribe@struts.**apache.org<user-unsubscribe@struts.apache.org>
>
> For additional commands, e-mail: user-help@struts.apache.org
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message