Apache Tomcat 8.5.0 Beta 和 8.0.33 发布了，Tomcat 是一个小型的轻量级应用服务器，在中小型系统和并发访问用户不是很多的场合下被普遍使用，是开发和调试JSP 程序的首选。对于一个初学者来说，可以这样认为，当在一台机器上配置好Apache 服务器，可利用它响应对HTML 页面的访问请求。实际上Tomcat 部分是Apache 服务器的扩展，但它是独立运行的，所以当你运行tomcat 时，它实际上作为一个与Apache 独立的进程单独运行的。
Apache Tomcat 8.5.0 Beta 更新日志：
Added support for HTTP/2, and TLS virtual hosting
Added support for JASPIC 1.1
The BIO connectors, support for Windows Itanium and support for Comet have been removed
下载地址：http://tomcat.apache.org/download-80.cgi
Apache Tomcat 8.0.33 更新日志：
Correct a false positive warning for ThreadLocal related memory leaks when the key class but not the value class has been loaded by the web application class loader.
Improve the performance of javax.servlet.jsp.el.ScopedAttributeELResolver when resolving attributes that do not exist.
Update the packaged version of the Tomcat Native Library to 1.2.5 to pick up the Windows binaries that are based on OpenSSL 1.0.2g and APR 1.5.1.a