Tomcat源码研究

说明：  tomcat源码解析过程文档，详细说明了tomcat从启动到最后结束中间类和方法的调用过程，对于研究java底层源码的启动很有好处。(Tomcat source code parsing process document, detailed description of Tomcat from start to end the call process of intermediate classes and methods, for the study of Java underlying source code start is very helpful.)