Inject CDI bean into JSF @ViewScoped bean

Question

I have a problem with JSF, CDI project. I did a lot of research and I found that in CDI there is no @ViewedScoped annotation. I solving problem with ajax based page with dialog. I want to pass variable to dialog from datatable. For this purpose, I can't use @RequestedScoped bean because value is discard after end of request. Can anyone help me to solve it? I can't use @SessionScoped but it's a bad practice IMHO. Or maybe save only this one variable into session who knows. Can you guys give me any hints how to solve this problem elegantly?

import javax.enterprise.context.ApplicationScoped;    
@ApplicationScoped
public class ServiceBean implements Serializable {
...

import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

@ManagedBean
@ViewScoped
public class SomeBean {

@Inject
ServiceBean serviceBean;


@Postconstruct ...

Here is the error message:

com.sun.faces.mgbean.ManagedBeanCreationException: An error occurred performing resource injection on managed bean warDetailBean

Answer 1

First , If you are attempting to use CDI, you need to activate it by putting a WEB-INF/beans.xml file in your application (note that this file can be empty), more informations about that file could be found in the Weld - JSR-299 Reference Implementation .

As you are using Tomcat, please be sure to respect all the configuration requirements by following the steps in How to install CDI in Tomcat?

Second , Even if you can use @Inject inside a JSF managed bean, It's preferable that you don't mix JSF managed beans and CDI, please see BalusC's detailed answer regarding Viewscoped JSF and CDI bean .

So if you want to work only with CDI @Named beans, you can use OmniFaces own CDI compatible @ViewScoped :

import javax.inject.Named;
import org.omnifaces.cdi.ViewScoped;

@Named
@ViewScoped
public class SomeBean implements Serializable {

    @Inject
    ServiceBean serviceBean;
}

Or , if you want to work only with JSF managed beans, you can use @ManagedProperty to inject properties:

import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

@ManagedBean
@ViewScoped
public class SomeBean{

@ManagedProperty(value = "#{serviceBean}")
ServiceBean serviceBean;

}

See also:

• ManagedProperty in CDI @Named bean returns null
• Omnifaces CDI ViewScoped