我想使用Jetty运行servlet,但只能使用java代码(嵌入式jetty)。 这是我的两个班级:
ExampleServer.java:
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.handler.HandlerCollection;
import org.eclipse.jetty.servlet.ServletContextHandler;
/**
* Created by Administrator on 7/8/14.
*/
public class ExampleServer {
public static void main(String[] args) throws Exception {
Server server = new Server();
ServerConnector connector = new ServerConnector(server);
connector.setPort(8080);
server.setConnectors(new Connector[]{connector});
ServletContextHandler context = new ServletContextHandler();
context.setContextPath("/hello");
context.addServlet(HelloServlet.class, "/");
HandlerCollection handlers = new HandlerCollection();
handlers.setHandlers(new Handler[]{context, new DefaultHandler()});
server.setHandler(handlers);
server.start();
server.join();
}
}
HelloServlet.java:
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* Created by Administrator on 7/8/14.
*/
public class HelloServlet extends HttpServlet{
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.setContentType("text/html");
response.setStatus(HttpServletResponse.SC_OK);
response.getWriter().println("<h1>Hello from HelloServlet</h1>");
response.getWriter().println("session=" + request.getSession(true).getId());
}
}
现在,当我尝试访问http://localhost:8080/hello
时,我收到以下错误:
HTTP错误:500
访问/ hello /时遇到问题。原因是:
java.lang.IllegalStateException: No SessionManager
关于如何解决这个问题的任何想法? 谢谢。
答案 0 :(得分:1)
你好像错过了一步,
context.addServlet(HelloServlet.class, "/");
context.setSessionHandler(new org.eclipse.jetty.server.session.SessionHandler());
通常,配置文件用于默认设置(或使用JDBCSessionManager表示集群)。此外,您只需要这个,因为您调用了request.getSession(true).getId()