一、说明

   在嵌入式Jetty中，有时候我们想运行一些的Servlet，此时就需要创建创建Context，然后让自己的Servlet运行在这些ServletContext中。

二、应用

   1、方式一

       首先创建一个ServletContextServer类，用来初始化web应用程序的Context，并且指定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();        //创建连接器        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();    }}

   2、方式二

       除了上面的方式外，也可以创建两个Context，分别绑定到/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();        //创建连接器        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();    }}

三、参考