get Bean from BeanManager - Java Reflection

Java examples for Reflection:Java Bean

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Description

get Bean from BeanManager

Demo Code

/*/* w  w  w  .ja  va  2s. co  m*/
 * Copyright 2013 GiavaCms.org.
 *
 * Licensed under the Eclipse Public License version 1.0, available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.naming.Context;
import javax.naming.InitialContext;

public class Main{

    public static <T> T getBean(Class<T> beanClass) {
        try {
            Context initCtx = new InitialContext();
            Context envCtx = (Context) initCtx.lookup("java:comp/");
            BeanManager beanManager = (BeanManager) envCtx
                    .lookup("BeanManager");

            Bean phBean = (Bean) beanManager.getBeans(beanClass).iterator()
                    .next();
            CreationalContext cc = beanManager
                    .createCreationalContext(phBean);
            T bean = (T) beanManager.getReference(phBean, beanClass, cc);
            return bean;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

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