Tomcat @Resource annotations API annotation stops working in Tomcat 7

Question

I have been using Tomcat 6.0.26-6.0.35 for several years with JSF 2 Mojarra, various versions up to 2.1.2 which I have been using for some months. I have several request-scoped

Answer 1

My guess is something is causing org.apache.catalina.core.DefaultInstanceManager to ignore annotations because faces requires the @PostConstruct method to be processed apart from @Resource fields. I have created a workaround that works for fields annotated with @Resource.

Add the following to web.xml:

    com.sun.faces.injectionProvider
    com.example.faces.Tomcat7InjectionProvider

And add the class to your source:

package com.example.faces;

import java.lang.reflect.Field;

import javax.annotation.Resource;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletContext;

import org.apache.catalina.util.Introspection;

import com.sun.faces.spi.InjectionProviderException;
import com.sun.faces.vendor.WebContainerInjectionProvider;

public class Tomcat7InjectionProvider extends WebContainerInjectionProvider {

    public Tomcat7InjectionProvider(ServletContext servletContext) {
    }

    @Override
    public void inject(Object managedBean) throws InjectionProviderException {
        if (managedBean != null) {
            // see org.apache.catalina.core.DefaultInstanceManager
            Field[] fields = Introspection.getDeclaredFields(managedBean.getClass());
            for (Field field : fields) {
                // field may be private
                field.setAccessible(true);
                if (field.isAnnotationPresent(Resource.class)) {
                    Resource annotation = null;
                    try {
                        annotation = field.getAnnotation(Resource.class);
                        Context ctx = new InitialContext();
                        Object resource = ctx.lookup("java:comp/env/" + annotation.name());
                        field.set(managedBean, resource);
                    } catch (Exception e) {
                        throw new InjectionProviderException("cannot find resource " + annotation.name(), e);
                    }
                }
            }
        }
    }
}