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";>
<html xmlns="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 <fusilla...@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>
*
* 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 <fusilla...@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
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