轉自 ： http://blog.csdn.net/withiter/article/details/6733344
http://www.docjar.com/html/api/org/apache/catalina/startup/Bootstrap.java.html
http://www.docjar.com/projects/apache-tomcat-6.0.26-src-java.html
http://www.docjar.com/projects/apache-tomcat-6.0.26-src-java.html