请给我建议如何正确设置Jetty。我正在使用最新版本的jetty(9.0.6.v20130930)。我订购了服务器实现具体的servlet,它不起作用! 我已经和Jetty做了一点工作,没有看到类似的东西。
- Main.class
public static void main(String[] args) throws Exception
{
MessageSystem ms = new MessageSystem();
Frontend frontend = new Frontend(ms);
(new Thread(frontend)).start();
Server server = new Server(8080);
server.setHandler(frontend);
server.start();
server.join();
}
- Frontend.class
public class Frontend extends AbstractHandler implements Runnable, Abonent {
... constructor and others methods...
public void handle(String target, Request baseRequest,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
setResponseSettings(baseRequest,response);
PrintWriter out = response.getWriter();
try {
int id;
HttpSession session = request.getSession();
if( session.isNew()){
id = setSessionId(session);
pageContent = "Hello new user! Your id: "+id;
out.println(new Page().enterName());
}else{
id = getSessionId(session);
pageContent = "Hi! I remember you. You are: " +id;
out.println(new Page().normalContent());
}
}
catch (IllegalStateException ex){
System.out.println("Exception!"+ex);
}
out.println("<H1>" + pageContent + "</H1>");
Iterator iterator = listStrings.iterator();
while (iterator.hasNext()){
out.println("<br>");
out.println("Your text from TextField: "+iterator.next());
}
out.close();
}
- Сonsole
2013-11-01 04:06:24.273:INFO:oejs.Server:main: jetty-9.0.6.v20130930
2013-11-01 04:06:24.309:INFO:oejs.ServerConnector:main: Started ServerConnector@358e0f79{HTTP/1.1}{0.0.0.0:8080}
Exception!java.lang.IllegalStateException: No SessionManager
Exception!java.lang.IllegalStateException: No SessionManager
答案 0 :(得分:12)
你缺少3件事。
<强> Main.java 强>
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.server.session.HashSessionIdManager;
import org.eclipse.jetty.server.session.HashSessionManager;
import org.eclipse.jetty.server.session.SessionHandler;
public class Main
{
public static void main(String[] args)
{
MyDumpHandler dump = new MyDumpHandler();
Server server = new Server(8080);
// Specify the Session ID Manager
HashSessionIdManager idmanager = new HashSessionIdManager();
server.setSessionIdManager(idmanager);
// Sessions are bound to a context.
ContextHandler context = new ContextHandler("/");
server.setHandler(context);
// Create the SessionHandler (wrapper) to handle the sessions
HashSessionManager manager = new HashSessionManager();
SessionHandler sessions = new SessionHandler(manager);
context.setHandler(sessions);
// Put dump inside of SessionHandler
sessions.setHandler(dump);
// Tree is now
// Server
// + ContextHandler("/")
// + SessionHandler(Hash)
// + MyDumpHandler
try
{
server.start();
server.join();
}
catch (Throwable t)
{
t.printStackTrace();
}
}
}
<强> MyDumpHandler.java 强>
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.handler.AbstractHandler;
public class MyDumpHandler extends AbstractHandler
{
public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
PrintWriter out = response.getWriter();
response.setContentType("text/plain");
try
{
HttpSession session = request.getSession();
if (session.isNew())
{
out.printf("New Session: %s%n", session.getId());
}
else
{
out.printf("Old Session: %s%n", session.getId());
}
}
catch (IllegalStateException ex)
{
out.println("Exception!" + ex);
ex.printStackTrace(out);
}
out.close();
}
}