错误Caused by: Action class [com.zyl.action.LoginAction] does not have a public no
Caused by: Action class [com.zyl.action.LoginAction] does not have a public no-arg constructor - action - file:/C:/Tomcat%206.0/webapps/IndependenceDay/WEB-INF/classes/struts.xml:5:65
Action中没有构造函数
