How to call function upon loading of JSF application

[Lee Mark]

IN JSP i used to put things in bean's constructor which is in APPLCIATION scope,
similarly
i want to load a function upon deploy of application where i can put .

i tried putting in listener but @ that time i am not getting faces config 's injection .

so is there any way out ?

[Lincoln Baxter]

I would create a @ManagedBean with @ApplicationScope (or a @Named entity if using CDI/JSR-299) and put your logic in a method annotated with @PostConstruct

This will cause the @PostConstruct annotated method to be invoked immediately after the bean is constructed on JSF application start-up.

[Jason Porter]

Depending on what you need to do, you may be able to listen for the PostConstructApplicationEvent, otherwise what Lincoln suggested is probably your best bet.

[Lee Mark]

here is my faces-config

<?xml version='1.0' encoding='UTF-8'?>

<!-- =========== FULL CONFIGURATION FILE ================================== -->

<faces-config version="1.2" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">
    <managed-bean>
        <managed-bean-name>bookBean</managed-bean-name>
        <managed-bean-class>DataBean</managed-bean-class>
        <managed-bean-scope>application</managed-bean-scope>
    </managed-bean>
</faces-config>

here is my bean





*/

import javax.annotation.PostConstruct;
public class DataBean {
String name ;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public DataBean(String name) {
        this.name = name;
    }

    public DataBean() {
            System.out.println("connst  called");
    }
    
    @PostConstruct
    public void method1(){
        System.out.println("method 1 called");
    }

}

and my server log when i deploy this app

init:
deps-module-jar:
deps-ear-jar:
deps-jar:
Created dir: /home/jigar/NetBeansProjects/JSFOnLoadDemo/build/web/WEB-INF/classes
Created dir: /home/jigar/NetBeansProjects/JSFOnLoadDemo/build/web/META-INF
Copying 1 file to /home/jigar/NetBeansProjects/JSFOnLoadDemo/build/web/META-INF
Copying 4 files to /home/jigar/NetBeansProjects/JSFOnLoadDemo/build/web
library-inclusion-in-archive:
library-inclusion-in-manifest:
compile:
compile-jsps:
Created dir: /home/jigar/NetBeansProjects/JSFOnLoadDemo/dist
Building jar: /home/jigar/NetBeansProjects/JSFOnLoadDemo/dist/JSFOnLoadDemo.war
In-place deployment at /home/jigar/NetBeansProjects/JSFOnLoadDemo/build/web
Start registering the project's server resources
Finished registering server resources
moduleID=JSFOnLoadDemo
deployment started : 0%
deployment finished : 100%
Deploying application in domain completed successfully
Trying to create reference for application in target server  completed successfully
Trying to start application in target server  completed successfully
Deployment of application JSFOnLoadDemo  completed successfully
Enable of JSFOnLoadDemo in target server completed successfully
Enable of application in all targets  completed successfully
All operations completed successfully
run-deploy:
Browsing: http://localhost:8081/JSFOnLoadDemo/
run-display-browser:
run:
BUILD SUCCESSFUL (total time: 1 second)


method is not getting executed on load..

requirement is i need to call a method after context is initialized and i need to use the injected properties of context thats why i need context to be initilized.

[Jason Porter]

My guess would be you're using the old version of faces-config (and possibly the old jars). The schema you're using for the faces-config is 1.2 change that to the 2.0 version, also double check the jars you're using are the 2.0 jars (look in the MANIFEST.MF file).

[Lee Mark]

<?xml version='1.0' encoding='UTF-8'?>

<!-- =========== FULL CONFIGURATION FILE ================================== -->

<faces-config version="2.0"
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd">
    <managed-bean>
        <managed-bean-name>bookBean</managed-bean-name>
        <managed-bean-class>DataBean</managed-bean-class>
        <managed-bean-scope>application</managed-bean-scope>
    </managed-bean>

</faces-config>

   
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
</web-app>

 
import javax.annotation.PostConstruct;

public class DataBean {
String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public DataBean(String name) {
        this.name = name;
        System.out.println("dataBean const called 1 arg");
    }

    public DataBean() {
        System.out.println("dataBean const called");
    }
    @PostConstruct
    public void hello(){
        System.out.println("hello called");
    }

}
   

i am getting...

   
INFO: Unknown loader org.glassfish.internal.api.DelegatingClassLoader@27cd63 class org.glassfish.internal.api.DelegatingClassLoader
INFO: Initializing Mojarra (1.2_10-b01-FCS) for context '/WebApplication14'
SEVERE: WebModule[/WebApplication14]PWC1275: Exception sending context initialized event to listener instance of class com.sun.faces.config.ConfigureListener
com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED! cvc-enumeration-valid: Value '2.0' is not facet-valid with respect to enumeration '[1.2]'. It must be a value from the enumeration.
        at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:213)
        at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:196)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4623)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:5323)
        at com.sun.enterprise.web.WebModule.start(WebModule.java:456)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:922)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:906)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:696)
        at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:2205)
        at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1890)
        at com.sun.enterprise.web.WebApplication.start(WebApplication.java:85)
        at com.sun.enterprise.v3.server.ApplicationLifecycle.start(ApplicationLifecycle.java:560)
        at com.sun.enterprise.v3.server.ApplicationLifecycle.start(ApplicationLifecycle.java:547)
        at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:189)
        at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:329)
        at com.sun.enterprise.v3.admin.CommandRunner$2.execute(CommandRunner.java:302)
        at com.sun.enterprise.v3.admin.CommandRunner.doCommand(CommandRunner.java:312)
        at com.sun.enterprise.v3.admin.CommandRunner.doCommand(CommandRunner.java:119)
        at com.sun.enterprise.v3.admin.CommandRunner.doCommand(CommandRunner.java:99)
        at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:250)
        at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:176)
        at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:147)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:180)
        at com.sun.grizzly.http.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:633)
        at com.sun.grizzly.http.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:570)
        at com.sun.grizzly.http.DefaultProcessorTask.process(DefaultProcessorTask.java:827)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:152)
        at com.sun.enterprise.v3.services.impl.GlassfishProtocolChain.executeProtocolFilter(GlassfishProtocolChain.java:71)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:103)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:89)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:67)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56)
        at com.sun.grizzly.util.WorkerThreadImpl.processTask(WorkerThreadImpl.java:325)
        at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:184)
Caused by: org.xml.sax.SAXParseException: cvc-enumeration-valid: Value '2.0' is not facet-valid with respect to enumeration '[1.2]'. It must be a value from the enumeration.
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:410)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3165)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processOneAttribute(XMLSchemaValidator.java:2748)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processAttributes(XMLSchemaValidator.java:2685)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:2037)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:685)
        at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.beginNode(DOMValidatorHelper.java:273)
        at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.validate(DOMValidatorHelper.java:240)
        at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.validate(DOMValidatorHelper.java:186)
        at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl.validate(ValidatorImpl.java:100)
        at javax.xml.validation.Validator.validate(Validator.java:127)
        at com.sun.faces.config.ConfigManager$ParseTask.getDocument(ConfigManager.java:434)
        at com.sun.faces.config.ConfigManager$ParseTask.call(ConfigManager.java:394)
        at com.sun.faces.config.ConfigManager$ParseTask.call(ConfigManager.java:351)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
SEVERE: PWC1306: Startup of context /WebApplication14 failed due to previous errors
INFO: Loading application WebApplication14 at /WebApplication14
INFO: Deployment of WebApplication14 done is 540 ms

 

[Lee Mark]

i need to do this in JSF 1.2 only..
is there any way out ?/

Thanks in advance ..

[Jason Porter]

You're not using 2.0 JSF jars:

INFO: Initializing Mojarra (1.2_10-b01-FCS) for context '/WebApplication14'

Are you using GlassFish v2? If you are there are a couple of options:
1: Upgrade to GlassFish v3
2: bundle the JSF 2.0 jars in your app and turn off class loading delegation and tell it you're bundling JSF in your sun-web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-web-app PUBLIC 
    "-//Sun Microsystems, Inc.//DTD GlassFish Application Server 3.0 Servlet 3.0//EN"
    "http://www.sun.com/software/appserver/dtds/sun-web-app_3_0-0.dtd">
<sun-web-app>
  <class-loader delegate="false" />
  <property name="useBundledJsf" value="true"/>
</sun-web-app>

Probably have to change the dtd to use the correct one.

[Lee Mark]

i need to do this in JSF 1.2 only..
is there any way out ?/

Thanks in advance ..

[Jason Porter]

You've tried putting it in the constructor? You can always grab the FacesContext with FacesContext.getCurrentInstance. If that doesn't work for you, the next thing you've got is a PhaseListener.

[Lee Mark]

i tried..
but at this time context is not initilized so i am not getting injected properties..


Thanks .

[Jason Porter]

Try the PhaseListener, maybe someone else has a smarter idea, but with JSF 1.2 that's probably what you'll have to do.

[Lee Mark]

nop its not working..
any one has any idea ?

[Lincoln Baxter]

Try a ServletContextListener:

http://www.stardeveloper.com/articles/display.html?article=2001111901&page=1

[Lee Mark]

yeah..
but i am not getting initilized context at the servletContextListener's context initilized method.
in jSF 1.2 beans having application scope gets initilized when it is needed not at start up //

[Lincoln Baxter]

You may be able to construct a FacesContext manually if you require it... Or you should consider using a 3rd party Bean scope management system like Weld(CDI) that will provide access to beans at all phases of the Servlet lifecycle (and simplify your faces configuration):

1. http://ocpsoft.com/java/jsf-java/jsf-20-extension-development-accessing-facescontext-in-a-filter/
2. http://seamframework.org/Weld