不就是個blog

應用程式內嵌Jetty運行webapp時，希望程式和webapp共用同一個spring context，在web.xml設定context loader listener時，要改用自定的MyContextLoaderListener。

JettyServer.java:

import org.mortbay.jetty.Server;
import org.mortbay.jetty.nio.SelectChannelConnector;
import org.mortbay.jetty.webapp.WebAppContext;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

public class JettyServer implements ApplicationContextAware {
  private ApplicationContext applicationContext;

  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
     this.applicationContext = applicationContext;
  }

  public void start() throws Exception {
     int port = Integer.parseInt(System.getProperty("jetty.port", "8080"));

    SelectChannelConnector connector = new SelectChannelConnector();
     connector.setPort(port);

    Server server = new Server();
     server.addConnector(connector);

    WebAppContext context = new WebAppContext();
     context.setClassLoader(applicationContext.getClassLoader());
     context.setAttribute("applicationContext", applicationContext);
     context.setServer(server);
     context.setContextPath("/");
     context.setWar("src/main/webapp");

    server.addHandler(context);
     server.start();
  }
}

MyContextLoader.java:

import javax.servlet.ServletContext;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.ContextLoader;

public class MyContextLoader extends ContextLoader {
  @Override
  protected ApplicationContext loadParentContext(ServletContext servletContext) throws BeansException {
     return (ApplicationContext)servletContext.getAttribute("applicationContext");
  }
}

MyContextLoaderListener.java:

import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.ContextLoaderListener;

public class MyContextLoaderListener extends ContextLoaderListener {
  @Override
  protected ContextLoader createContextLoader() {
     return new MyContextLoader();
  }
}