Question

struts2抛异常，都三天了，高手请进来看看吧……

java.lang.InstantiationException: com.opensymphony.xwork2.Action
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:123)
org.apache.struts2.plexus.PlexusObjectFactory.lookup(PlexusObjectFactory.java:298)
org.apache.struts2.plexus.PlexusObjectFactory.buildBean(PlexusObjectFactory.java:216)
com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:154)
com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:143)
com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:113)
org.apache.struts2.plexus.PlexusObjectFactory.buildAction(PlexusObjectFactory.java:127)
com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:275)
com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:365)
com.opensymphony.xwork2.DefaultActionInvocation.access$000(DefaultActionInvocation.java:38)
com.opensymphony.xwork2.DefaultActionInvocation$1.doProfiling(DefaultActionInvocation.java:83)
com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
com.opensymphony.xwork2.DefaultActionInvocation.<init>(DefaultActionInvocation.java:74)
com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:189)
org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:41)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:494)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:422)

以下是struts.xml文件
<struts>

<include file="struts-default.xml"></include>

<package name="com.nmsti.mlspt" extends="struts-default">
<global-results>
<result name="error">/page/error.html</result>
</global-results>

<action name="adminlogin" class="web.action.LoginAction" method="adminLogin">
<result name="success" type="dispatcher">/page/admin/main/main.jsp</result>
<result name="input" type="dispatcher">/page/admin/adminLogin.jsp</result>
</action>
</package>
</struts>
帮帮忙啊！！
struts-default.xml是存在的！

Answer 1

你的构造方法中只写了有参数的构造函数而没写无参数的构造函数或者可能是你用new创建了一个虚拟类对象（这个对象可能就在xwork。action的jar包里），应该用Class.forName(类路径).getInstance();

Answer 2

我刚刚学额..

看到unknown source 会不会是

<include file="struts-default.xml"></include>

struts-default.xml 文件没有啊...

Answer 3

是不是少了jar包，要么struts.xml配置不完整

Answer 4

jumpkang@163.com
发过来我看一下。
请参考

Answer 5

删掉 lib下的xerces-2.6.2.jar包 分拿来。。。

Answer 6

struts-default.xml文件找不到