如果遵循Struts2文档教程Simple Setup一节的方法对Strust2的架构进行从头构建的话，那么在接下来的Hello World一节中构建的网站部署到Tomcat6上后将无法启动。原因是Simple Setup一节中说明的需要的库文件有：

 

The following files are a minium requirement for your application.

Filename	Description
struts2-core.jar	Framework library itself, found in distribution root directory
xwork.jar	XWork 2 library on which Struts 2 is built (version 2.0 or later)
ognl.jar	Object Graph Navigation Language (OGNL), the expression language used throughout the framework
freemarker.jar	All UI tag templates are written in Freemarker (also a good option for your own views)
commons-logging.jar	Commons logging, which the framework uses to support transparently logging to either Log4J or JDK 1.4+
web.xml	Java web application configuration file that defines the filters (and other components) for your web application
struts.xml	Framework configuration file that defines the actions, results, and interceptors for your application

 

但是实际上还需要commons-fileupload.jar，加入该库就能解决Hello World项目不能启动的问题。