Jetty - 嵌入式執行Servlet

一、說明
    在嵌入式Jetty中，有時候我們想執行一些的Servlet，此時就需要建立建立Context，然後讓自己的Servlet執行在這些ServletContext中。

二、應用
    1、方式一

         首先建立一個ServletContextServer類，用來初始化web應用程式的Context，並且指定Servlet和Servlet匹配的url。這裡指定了兩個Servlet，分別是IndexServlet和UserServlet，並分別對應/test/index/indexServlet和/test/user/userServlet。

package com.test.main;
                                                                                                            
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import org.eclipse.jetty.server.nio.SelectChannelConnector;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
                                                                                                            
import com.test.servlet.IndexServlet;
import com.test.servlet.UserServlet;
                                                                                                            
public class Main {
                                                                                                            
    public static void main(String[] args) throws Exception {
                                                                                                             
       Server service = new Server();
        //建立聯結器
        Connector connector = new SelectChannelConnector();
        // 設定埠
        connector.setPort(80);
        // 設定host地址
        connector.setHost("127.0.0.1");
                                                                                                                     
        service.setConnectors(new Connector[] { connector });
                                                                                                                     
        //ServletContext
        ServletContextHandler context =
            new ServletContextHandler(ServletContextHandler.SESSIONS);
        //設定根路徑
        context.setContextPath("/test");
                                                                                                          
        //設定servlet的url
        context.addServlet(new ServletHolder(new IndexServlet()), "/index/indexServlet");
        context.addServlet(new ServletHolder(new UserServlet()), "/user/userServlet");
                                                                                                                     
        service.setHandler(context);
                                                                                                                     
        service.setStopAtShutdown(true);
        service.setSendServerVersion(true);
                                                                                                                     
        // 啟動服務
        service.start();
        service.join();
    }
}

    2、方式二
         除了上面的方式外，也可以建立兩個Context，分別繫結到/index/indexServlet和/user/userServlet，如下：

package com.test.main;
                                                                                                            
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import org.eclipse.jetty.server.nio.SelectChannelConnector;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
                                                                                                            
import com.test.servlet.IndexServlet;
import com.test.servlet.UserServlet;
                                                                                                            
public class Main {
                                                                                                            
    public static void main(String[] args) throws Exception {
                                                                                                             
      Server service = new Server();
        //建立聯結器
        Connector connector = new SelectChannelConnector();
        // 設定埠
        connector.setPort(80);
        // 設定host地址
        connector.setHost("127.0.0.1");
                                       
        //context1
        ServletContextHandler context1 =
            new ServletContextHandler(ServletContextHandler.SESSIONS);
        context1.setContextPath("/index");
        context1.setClassLoader(Thread.currentThread().getContextClassLoader());
        context1.addServlet(new ServletHolder(new IndexServlet()), "/indexServlet");
                                       
        //context2   
        ServletContextHandler context2 =
            new ServletContextHandler(ServletContextHandler.SESSIONS);
        context2.setContextPath("/user");
        context2.setClassLoader(Thread.currentThread().getContextClassLoader());
        context2.addServlet(new ServletHolder(new UserServlet()), "/userServlet");
                                       
        //contexts
        ContextHandlerCollection contexts = new ContextHandlerCollection();
        contexts.setHandlers(new Handler[] { context1, context2 });
                                              
        service.setHandler(contexts);
                                      
        service.setStopAtShutdown(true);
        service.setSendServerVersion(true);
                                                    
        // 啟動服務
        service.start();
        service.join();
    }
}

三、參考

   http://blog.csdn.net/kongxx/article/details/7230080