appserver/tests/appserv-tests/devtests/cdi/smoke-tests/slf4j-visibility/servlet/TestServlet.java

/*
 * Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

import java.io.IOException;
import java.io.PrintWriter;

import jakarta.enterprise.inject.spi.BeanManager;
import jakarta.inject.Inject;
import javax.naming.InitialContext;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebInitParam;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.jboss.logging.Logger;
//import org.slf4j.LoggerFactory;

@WebServlet(name="mytest",
        urlPatterns={"/myurl"},
        initParams={ @WebInitParam(name="n1", value="v1"), @WebInitParam(name="n2", value="v2") } )
public class TestServlet extends HttpServlet {
    @Inject TestBean tb;
    @Inject BeanManager bm;
    BeanManager bm1;

    public void service(HttpServletRequest req, HttpServletResponse res)
            throws IOException, ServletException {

        PrintWriter writer = res.getWriter();
        String msg = "";
        if (tb == null) msg += "Bean injection into Servlet failed";
        if (bm == null) msg += "BeanManager Injection via @Inject failed";
        try {
            bm1 = (BeanManager)((new InitialContext()).lookup("java:comp/BeanManager"));
        } catch (Exception ex) {
            ex.printStackTrace();
            msg += "BeanManager Injection via component environment lookup failed";
        }
        if (bm1 == null) msg += "BeanManager Injection via component environment lookup failed";


        System.out.println("BeanManager is " + bm);
        System.out.println("BeanManager via lookup is " + bm1);

        Logger l = Logger.getLogger(getClass());
        String s = "[ Hello World is logged by an instance of " + l.getClass() + ", which is loaded by " + l.getClass().getClassLoader() + "]";
        msg += s;
        l.info(s);

        writer.write(msg + "\n");
    }
}