get data from <h:selectManyCheckbox>
hi
iam trying this from so many days....can anyone tell me where iam going wrong
<html>
<body>
<f:view>
<h:form>
<h:selectManyCheckbox id="checkbox" layout="pageDirection" value="#{mybean.selectedItems}">
<f:selectItems value="#{mybean.selectItems}"/>
</h:selectManyCheckbox>
<h:commandButton action="#{mybean.someFunction}" value="getData" immediate="true"/>
</h:selectManyCheckbox>
</h:form>
</f:view>
</body>
</html>
bean
public class MyBean
{
private List selectItems=new ArrayList();
private List selectedItems=new ArrayList();
MyBean()
{
try
{
......
selectItems.add(..........................));
}
catch(Exception e)
{
System.out.println(e);
}
}
public List getSelectItems() {
return selectItems;
}
public void setSelectItems(List selectItems) {
this.selectItems = selectItems;
}
public List getSelectedItems() {
return selectedItems;
}
public void setSelectedItems(List selectedItems) {
this.selectedItems = selectedItems;
}
public String someFunction()// this method is not invoked at all.........
{
if (selectedItems!=null)
{
int sz=selectedItems.size();
System.out.println("size"+sz);
ListIterator it =selectedItems.listIterator();
while(it.hasNext())
{
String select=it.next().toString();
System.out.println("extra"+select);
}
}
return "success";
}
}
faces-congif.xml
<faces-config>
<managed-bean>
<managed-bean-name>mybean</managed-bean-name>
<managed-bean-class>org.MyBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
<from-view-id>/index.jsp</from-view-id>
<navigation-case>
<from-outcome>success</from-outcome>
<to-view-id>/index1.jsp</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>
[2339 byte] By [
honey17a] at [2007-11-27 3:28:57]
# 5
hi
<f:view>
<h:form>
<h:panelGrid>
<h:selectManyCheckbox id="checkbox" layout="pageDirection" value="#{mybean.selectedItems}">
<f:selectItems value="#{mybean.selectItems}"/>
</h:selectManyCheckbox>
<h:message for="checkbox" showDetail="true" />
<h:commandButton value="getData" action="#{mybean.someFunction}" />
</h:panelGrid>
</h:form>
</f:view>
but where will the error messages be displayed.....
i dint nt found the error messages
# 9
Here is a complete working snippet.
JSF<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<f:view>
<html>
<head>
<title>test</title>
</head>
<body>
<h:form>
<h:selectManyCheckbox value="#{myBean.selectedItems}">
<f:selectItems value="#{myBean.selectItems}" />
</h:selectManyCheckbox>
<h:commandButton value="submit" action="#{myBean.action}" />
</h:form>
</body>
</html>
</f:view>
MyBeanpackage mypackage;
import java.util.ArrayList;
import java.util.List;
import javax.faces.model.SelectItem;
public class MyBean {
private List<String> selectedItems;
private List<SelectItem> selectItems;
public void action() {
for (String selectedItem : selectedItems) {
System.out.println(selectedItem);
}
}
public List<SelectItem> getSelectItems() {
if (selectItems == null) {
selectItems = new ArrayList<SelectItem>();
selectItems.add(new SelectItem("value1", "label1"));
selectItems.add(new SelectItem("value2", "label2"));
selectItems.add(new SelectItem("value3", "label3"));
}
return selectItems;
}
public List<String> getSelectedItems() {
return selectedItems;
}
public void setSelectedItems(List<String> selectedItems) {
this.selectedItems = selectedItems;
}
}
# 12
hi BalusC
i tried ,but i got this error,what does it mean
javax.servlet.ServletException: Value binding '#{myBean.selectItems}'of UISelectItems with component-path {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /chekbox.jsp][Class: javax.faces.component.html.HtmlSelectManyCheckbox,Id: _idJsp0][Class: javax.faces.component.UISelectItems,Id: _idJsp1]} does not reference an Object of type SelectItem, SelectItem[], Collection or Map but of type : null
