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    1   /***
    2    * @(#)ServiceLoaderServlet.java
    3    *
    4    * JFoxSOAF, Service-Oriented Application Framework
    5    *
    6    * Copyright(c) JFoxSOAF Team
    7    *
    8    * Licensed under the GNU LGPL, Version 2.1 (the "License");
    9    * you may not use this file except in compliance with the License.
    10   * You may obtain a copy of the License at
    11   *
    12   * http://www.gnu.org/copyleft/lesser.html
    13   *
    14   * Unless required by applicable law or agreed to in writing, software
    15   * distributed under the License is distributed on an "AS IS" BASIS,
    16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    17   * See the License for the specific language governing permissions and
    18   * limitations under the License.
    19   *
    20   * For more information, please visit:
    21   * http://www.jfox.cn/confluence/display/JFoxSOAF/Home
    22   * http://www.huihoo.org/jfox/jfoxsoaf
    23   */
    24
    25  package org.huihoo.jfox.soaf.util.web;
    26
    27  import java.io.IOException;
    28
    29  import javax.servlet.ServletContext;
    30  import javax.servlet.ServletException;
    31  import javax.servlet.http.HttpServlet;
    32  import javax.servlet.http.HttpServletRequest;
    33  import javax.servlet.http.HttpServletResponse;
    34  import org.apache.commons.logging.Log;
    35  import org.apache.commons.logging.LogFactory;
    36  import java.io.InputStream;
    37
    38  import org.huihoo.jfox.soaf.container.ServiceLoader;
    39
    40  /***
    41   * <p>
    42   * Service loader initialization servlet.
    43   * </p>
    44   *
    45   * @author <a href="mailto:founder_chen@yahoo.com.cn">Peter Cheng </a>
    46   * @version $Revision: 1.3 $ $Date: 2006/02/15 08:45:46 $
    47   * @version Revision: 1.0
    48   */
    49
    50  public class ServiceLoaderServlet extends HttpServlet {
    51
    52      public static final String WEB_CONFIG = "config";
    53
    54      private ServletContext servletContext;
    55
    56      private ServiceLoader serviceLoader = ServiceLoader.getInstance();
    57
    58  	private final Log logger = LogFactory.getLog(getClass());
    59
    60      /***
    61       * Initialize the service context.
    62       */
    63      public void init() throws ServletException {
    64          servletContext = getServletContext();
    65  		String webConfig = this.getInitParameter(WEB_CONFIG);
    66  		logger.info("Load service config " + webConfig);
    67  		InputStream is = servletContext.getResourceAsStream(webConfig);
    68          serviceLoader.initService(is);
    69      }
    70
    71      /***
    72       * Http request should never be send to this servlet.
    73       */
    74      public void service(HttpServletRequest request, HttpServletResponse response)
    75              throws IOException {
    76      }
    77
    78      /***
    79       * Destory services.
    80       */
    81      public void destroy() {
    82      }
    83
    84  }