JSF/Spring integration - managed-property problem

Question

I am using JSF 1.1_01 (MyFaces 1.1), Spring 1.2, Ajax4Jsf.
The JSF application has h:selectOneMenu .
On change event of h:selectOneMenu sets "selectedValue" into backing bean as shown below:
page.jsp
<h:selectOneMenu value="#{test.selectedDevice}" >
<f:selectItem itemValue="0" itemLabel="--New--"/>
<f:selectItem itemValue="1" itemLabel="WorkStation"/>
<f:selectItem itemValue="2" itemLabel="Router"/>
<f:selectItem itemValue="3" itemLabel="Switch"/>
<ajax:support action="#{test.loadDevice}" event="onchange" reRender="t2,t3,t4,t5"/>
</h:selectOneMenu>
TestBean.java (Backing Bean)
public String getSelectedDevice() {
logger.info(" *** In getSelectedDevice *** ");
if (selectedDevice == null) {
selectedDevice = "0"; // This will be the default selected item.
return selectedDevice;
public void setSelectedDevice(String selectedDevice) {
logger.info(" *** In setSelectedDevice *** ");
this.selectedDevice = selectedDevice;
Here are the configuration file snippets for integrating JSF Spring
web.xml
<listener>
<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
faces-config.xml
<application>
<variable-resolver>org.springframework.web.jsf.DelegatingVariableResolver</variable-resolver>
</application>
<managed-bean>
<managed-bean-name>test</managed-bean-name>
<managed-bean-class>test.TestBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-property>
<property-name>deviceManager</property-name>
<property-class> test.DeviceTypeManager </property-class>
<value>#{deviceManager}</value>
</managed-property>
</managed-bean>
The above code results in the following error
javax.faces.FacesException: Cannot get value for expression '#{test.selectedDevice}'
The error occurs only if i include <managed-property> inside the <managed-bean> in faces-config.xml.
The moment i remove <managed-property> from face-config.xml the error disappears & page gets rendered properly.
The purpose in having <managed-property> inside managed-bean is to call Spring's Manager class (i.e. deviceManager) from JSF application
Any pointers/suggestions in resolving the error will be highly appreciated
Regards
Bansi

Answer 1

The TestBean have a property for DeviceManager along with setter/getter methods as shown below. Sorry for not including in earlier posting
TestBean.java (Backing Bean)
private DeviceTypeManager deviceManager;
public DeviceTypeManager getDeviceManager() {
     return deviceManager;
public void setDeviceManager(DeviceTypeManager deviceManager) {
     this.deviceManager = deviceManager;
Here are the two scenarios
Scenario 1 : without <managed-property> the code works fine
Scenario 2 : with <managed-property> the code results in following error
javax.faces.FacesException: Cannot get value for expression '#{test.selectedDevice}'
Scenario 1 has only JSF whereas Scenario 2 has JSF-Spring integration
The Scenario 1 works absolutely fine as the expression '#{test.selectedDevice}' gets its value from setter/getter method in the backing bean(TestBean.java) . This is expected behaviour & wondering why it doesn't work similarly in Scenario 2 instead it complains
Cannot get value for expression '#{test.selectedDevice}'
I am willing to upload the war file. Any pointers/suggestions in resolving the error will be highly appreciated
Regards
Bansi