Struts2并非继承自Struts1的构架机制，而是继承自WebWork，因为Struts2是对WebWork的升级而产生的，Struts2吸收了Struts1和WebWork两者的优势，从而在稳定性、性能等各方面都有很好的保证。

Apache Struts2即使之前的WebWork2，经历几年的发展后WebWork和Struts2社区决定合并，也即是现在的Struts2。-Struts2 is not inherited　struts1 framework mechanism, but inherit　webwork, because Struts2 webwork upgrade, Struts2 absorbs the advantages struts1 and webwork both, resulting in stability, performance and other areas have very good guarantee.

Apache Struts2 even before the WebWork2, after several years of development and webwork Struts2 community decided to merge, which is now the Struts2.