textmdbbean.java

想学习EJB的同学

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package ejb3.day5;

import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.annotation.Resource;
import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.ejb.MessageDrivenContext;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

/**
 *
 * @author user
 */
@MessageDriven(mappedName = "jms/q", activationConfig =  {
        @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
        @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue")
    })
public class TextMDBBean implements MessageListener {
    
    public TextMDBBean() {
        System.out.println("TextMDBBean");
    }
    
    @Resource
    public void setMessageDrivenContext(MessageDrivenContext ctx){
            System.out.println("DI: setMessageDrivenContext");
    }
    
    @PostConstruct
    public void constructed(){
        System.out.println("constructed");
    }

    public void onMessage(Message message) {
        try {
            TextMessage tmsg = (TextMessage) message;
            System.out.println(tmsg.getText());
        } catch (JMSException ex) {
            Logger.getLogger(TextMDBBean.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    @PreDestroy
    public void beforeDestroy(){
        System.out.println("beforeDestroy");
    }
    
}