Jetty - 嵌入式运行Servlet

1、说明

   在嵌入式Jetty中，有时候咱们想运行一些的Servlet，此时就须要建立建立Context，而后让本身的Servlet运行在这些ServletContext中。

2、应用

   一、方式一

       首先建立一个ServletContextServer类，用来初始化web应用程序的Context，而且指定Servlet和Servlet匹配的url。这里指定了两个Servlet，分别是IndexServlet和UserServlet，并分别对应/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();
        //建立链接器
        Connector connector = new SelectChannelConnector();
        // 设置端口
        connector.setPort(80);
        // 设置host地址
        connector.setHost("127.0.0.1");
                                                                                                                    
        service.setConnectors(new Connector[] { connector });
                                                                                                                    
        //ServletContext
        ServletContextHandler context =
            new ServletContextHandler(ServletContextHandler.SESSIONS);
        //设置根路径
        context.setContextPath("/test");
                                                                                                         
        //设置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);
                                                                                                                    
        // 启动服务
        service.start();
        service.join();
    }
}

   二、方式二

       除了上面的方式外，也能够建立两个Context，分别绑定到/index/indexServlet和/user/userServlet，以下：

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();
        //建立链接器
        Connector connector = new SelectChannelConnector();
        // 设置端口
        connector.setPort(80);
        // 设置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);
                                                   
        // 启动服务
        service.start();
        service.join();
    }
}

3、参考

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