Apache Tomcat 是 Java Servlet、JavaServer Pages、Java 表达式语言和 Java WebSocket 技术的开源实现，是一个免费的开放源代码的 Web 应用服务器。
相较于 8.3.35版本，Apache Tomcat 8.5.37 包含以下更改：
Implement the requirements of section 8.2.2 2.c of the Servlet specification and prevent a web application from deploying if it has fragments with duplicate names and is configured to use relative ordering of fragments.
The default Servlet no longer overrides a previously set content-type.
Update the packaged version of the Tomcat Native Library to 1.2.19 to pick up the latest Windows binaries built with APR 1.6.5 and OpenSSL 1.1.1a.
了解更多请查看发行日志 。