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Jetty -9.3.15.v20161220发布,一个servlet容器

Jetty 是一个开源的servlet容器，它为基于Java的web内容，例如JSP和servlet提供运行环境。Jetty是使用Java语言编写的，它的API以一组JAR包的形式发布。开发人员可以将Jetty容器实例化成一个对象，可以迅速为一些独立运行（stand-alone）的Java应用提供网络和web连接。

和Tomcat的比较：

Jetty更轻量级。这是相对Tomcat而言的。
由于Tomcat除了遵循Java Servlet规范之外，自身还扩展了大量JEE特性以满足企业级应用的需求，所以Tomcat是较重量级的，而且配置较Jetty亦复杂许多。但对于大量普通互联网应用而言，并不需要用到Tomcat其他高级特性，所以在这种情况下，使用Tomcat是很浪费资源的。这种劣势放在分布式环境下，更是明显。换成Jetty，每个应用服务器省下那几兆内存，对于大的分布式环境则是节省大量资源。而且，Jetty的轻量级也使其在处理高并发细粒度请求的场景下显得更快速高效。
Jetty更灵活
体现在其可插拔性和可扩展性，更易于开发者对Jetty本身进行二次开发，定制一个适合自身需求的Web Server。相比之下，重量级的Tomcat原本便支持过多特性，要对其瘦身的成本远大于丰富Jetty的成本。用自己的理解，即增肥容易减肥难。
然而，当支持大规模企业级应用时，Jetty也许便需要扩展，在这场景下Tomcat便是更优的。

更新日志

240 Missing content for multipart request after upgrade to Jetty > 9.2.7
905 Jetty terminates SSL connections too early with Connection: close
1020 Java Util Logging properties in wrong location
1050 Add multiple FilterHolder to a ServletContextHandler may cause problems
1051 NCSARequestLog/RolloverFileOutputStream does not roll day after DST ends
1054 Using WebSocketPingPongListener with empty PING payload results in NullPointerException
1057 Improve WebSocketUpgradeFilter fast path performance
1062 Jetty allows requests to hang under PUT load
1063 HostPortHttpField should handle port-only values
1064 HttpClient sets chunked transfer-encoding
1065 Response.setBufferSize checks for written content.
1069 Host header should be sent with HTTP/1.0
1072 InetAccessHandler needs InetAddress & Path based restrictions like IPAccessHandler did
1078 DigestAuthentication should use realm from server, even if unknown in advance
1081 DigestAuthenticator does not check the realm sent by the client
1090 Allow WebSocketUpgradeFilter to be used by WEB-INF/web.xml
1092 jetty-runner jstl support
1098 MimeTypes.getCharsetFromContentType() unable parse "application/pdf;;; charset=UTF-8"
1099 PushCacheFilter pushes POST requests
1108 Please improve logging in SslContextFactory when there are no approved cipher suites
1114 Add testcase for WSUF for stop/start of the Server
1118 Filter.destroy() conflicts with ContainerLifeCycle.destroy() in WebSocketUpgradeFilter
1123 Broken lifecycle for WebSocket's mappings
1124 Allow configuration of WebSocket mappings from Spring
1130 PROXY protocol support reports incorrect remote address
1134 Jetty HTTP/2 client problems
1135 Avoid allocations from Method.getParameterTypes() if possible
1146 jetty.server.HttpInput deadlock
1161 HttpClient and WebSocketClient should not remove all cookies on stop
1169 HTTP/2 reset on a stalled write does not unblock writer thread
1171 jetty-client throws NPE for request to IDN hosts only when `HttpClient#send(...)` is called + 1175 Reading HttpServletRequest InputStream from a Filter then accessing getParameterNames() results in java.io.IOException: Missing content for multipart request
1181 Review buffer underflow cases in SslConnection
1186 Where can i find SocketConnector .java and BlockingChannelConnector.java etc?