根据 JAR包 查看 struts 的版本

http://www.jguru.com/faq/view.jsp?EID=993521

Answer
The easiest way I can think of it to unzip the jar
 and look at the manifest.mf file.
 The manifest should contain a line called Implementation Version. Here is my manifest.mf:

Manifest-Version: 1.0
Implementation-Version: 1.0.2
Specification-Title: Struts Framework
Specification-Version: 1.0
Implementation-Title: Struts Framework
Extension-Name: Struts Framework
Created-By: Ant 1.4.1
Implementation-Vendor-Id: org.apache
Implementation-Vendor: Apache Software Foundation
Specification-Vendor: Apache Software Foundation


So my version is 1.0.2