jetty處理過程

請求流程：
發現一個新的連接
創建EndPoint
創建Connection
創建HttpParser
創建HttpGenerator
發現Channel中有數據
啓動數據解析
嘗試解析可用的請求
嘗試解析下一個可用的請求
請求頭解析完畢
根據是否有請求體，決定是否即可開始請求處理
把請求交給Server處理
Server把請求交給HandlerCollection處理
標記請求處理結束
刷新可能的緩衝區數據

"jetty-worker-36@3878" prio=5 tid=0x24 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
//===C
      at com.meituan.service.mobile.casekiller.controller.CaseController.getServiceList(CaseController.java:234)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:497)
      at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
      at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
      at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
//===B
      at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448)
//!!!注意下這是自定義的filter處理
      at com.meituan.jmonitor.collector.http.HttpMonitorFilter.doFilter(HttpMonitorFilter.java:54)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
      at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
      at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
      at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
      at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
      at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
      at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
      at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
      at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
//===A
      at org.eclipse.jetty.server.Server.handle(Server.java:368)
      at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
      at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)
      at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)
      at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
      at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
      at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
      at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
      at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
      at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
      at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
      at java.lang.Thread.run(Thread.java:745)

再看一個調試時的調用堆棧，ContextHandler A部分主要是jetty其它模塊獲取客戶端請求並進行一定處理，B部分主要就是jetty-servlet的工作了，C部分是將請求真正交由指定的spring servlet進行處理，注意看在part2中在指定的servlet處理請求之前jetty-servlet已經先調用了相應的filter鏈來處理請求。