Question

得到javax.servlet.ServletException：java.lang.ClassCastException:com.dna.nsm.sim.action.LogoutAction

在struts 1应用程序中。

错误消息：

javax.servlet.ServletException: java.lang.ClassCastException: com.dna.nsm.sim.action.LogoutAction
    org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:286)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)


root cause 

java.lang.ClassCastException: com.dna.nsm.sim.action.LogoutAction
    org.apache.struts.chain.commands.servlet.CreateAction.createAction(CreateAction.java:98)
    org.apache.struts.chain.commands.servlet.CreateAction.getAction(CreateAction.java:68)
    org.apache.struts.chain.commands.AbstractCreateAction.execute(AbstractCreateAction.java:91)
    org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)

LogoutAction代码：

public class LogoutAction  extends Action{
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) {
        // To redirect to the Login page
        return mapping.findForward("success");
    }
}

Struts-config.xml部分

 <action path="/logout" type="com.dna.nsm.sim.action.LogoutAction" >
            <forward name="success" path="/tiles/login/body.jsp" />
 </action>

建议请。

Answer 1

检查您的导入并确保您正在扩展正确的Action类。

struts应用程序中的javax.servlet.ServletException

1 个答案: