ValueStack in Struts 2 is the construct that is a conglomeration of the properties of objects as properties of a single virtual object.
Struts 2.1 has taken a long time, but we have worked hard to improve the build and release process, so releases can be expected more often in the future.
Struts 2.1花费了很长时间，但是我们已经努力改进了构建和发布流程，所以未来版本更新会更加及时。
