Jetty实战之 嵌入式Jetty运行Servlet

13年前
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。

1. 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HelloServlet和GoodbyeServlet,并分别对应/hello/*和/goodbye /*。
package com.google.code.garbagecan.jettystudy.sample5;    import org.eclipse.jetty.server.Server;  import org.eclipse.jetty.servlet.ServletContextHandler;  import org.eclipse.jetty.servlet.ServletHolder;    public class ServletContextServer {   public static void main(String[] args) throws Exception {    Server server = new Server(8080);      ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);    context.setContextPath("/");    server.setHandler(context);      // http://localhost:8080/hello    context.addServlet(new ServletHolder(new HelloServlet()), "/hello");    // http://localhost:8080/hello/kongxx    context.addServlet(new ServletHolder(new HelloServlet("Hello Kongxx!")), "/hello/kongxx");      // http://localhost:8080/goodbye    context.addServlet(new ServletHolder(new GoodbyeServlet()), "/goodbye");    // http://localhost:8080/goodbye/kongxx    context.addServlet(new ServletHolder(new GoodbyeServlet("Goodbye kongxx!")), "/goodbye/kongxx");        server.start();    server.join();   }  }
2. 两个简单的Servlet:HelloServlet和GoodbyeServlet:
package com.google.code.garbagecan.jettystudy.sample5;    import java.io.IOException;  import javax.servlet.ServletException;  import javax.servlet.http.HttpServlet;  import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;    public class HelloServlet extends HttpServlet {   private static final long serialVersionUID = 1L;   private String msg = "Hello World!";     public HelloServlet() {   }     public HelloServlet(String msg) {    this.msg = msg;   }     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    response.setContentType("text/html");    response.setStatus(HttpServletResponse.SC_OK);    response.getWriter().println("<h1>" + msg + "</h1>");    response.getWriter().println("session=" + request.getSession(true).getId());   }  }    package com.google.code.garbagecan.jettystudy.sample5;    import java.io.IOException;  import javax.servlet.ServletException;  import javax.servlet.http.HttpServlet;  import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;    public class GoodbyeServlet extends HttpServlet {   private static final long serialVersionUID = 1L;   private String msg = "Goodbye!";     public GoodbyeServlet() {   }     public GoodbyeServlet(String msg) {    this.msg = msg;   }     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    response.setContentType("text/html");    response.setStatus(HttpServletResponse.SC_OK);    response.getWriter().println("<h1>" + msg + "</h1>");    response.getWriter().println("session=" + request.getSession(true).getId());   }  }
3. 运行ServletContextServer类,然后分别访问以下四个url

  http://localhost:8080/hello
  http://localhost:8080/hello/kongxx
  http://localhost:8080/goodbye
  http://localhost:8080/goodbye/kongxx

 

4. 除了上面的方式外,也可以创建两个个Context,分别绑定到"/hello"和"/goodbye",如下:

package com.google.code.garbagecan.jettystudy.sample5;    import org.eclipse.jetty.server.Handler;  import org.eclipse.jetty.server.Server;  import org.eclipse.jetty.server.handler.ContextHandlerCollection;  import org.eclipse.jetty.servlet.ServletContextHandler;  import org.eclipse.jetty.servlet.ServletHolder;    public class MultiContextServer {   public static void main(String[] args) throws Exception {    Server server = new Server(8080);      // http://localhost:8080/hello/kongxx    ServletContextHandler context1 = new ServletContextHandler(ServletContextHandler.SESSIONS);    context1.setContextPath("/hello");    context1.setResourceBase(".");    context1.setClassLoader(Thread.currentThread().getContextClassLoader());    context1.addServlet(new ServletHolder(new HelloServlet("Hello Kongxx!")), "/kongxx");      // http://localhost:8080/goodbye/kongxx    ServletContextHandler context2 = new ServletContextHandler(ServletContextHandler.SESSIONS);    context2.setContextPath("/goodbye");    context2.setResourceBase(".");    context2.setClassLoader(Thread.currentThread().getContextClassLoader());    context2.addServlet(new ServletHolder(new GoodbyeServlet("Goodbye kongxx!")), "/kongxx");      ContextHandlerCollection contexts = new ContextHandlerCollection();    contexts.setHandlers(new Handler[] { context1, context2 });      server.setHandler(contexts);      server.start();    server.join();   }  }

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