/WEB-INF/:
        struts-bean.tld
        struts-config.tld
        struts-html.tld
        struts-logic.tld
        struts-nested.tld
        struts-tiles.tld
        web.xml
/WEB-INF/LIB/:
         commons-beanutils.jar
         commons-collections.jar
         commons-digester.jar
         commons-fileupload.jar
         commons-logging.jar
         jarkata-oro.jar
         struts.jar

<! -- index.jsp -->
<%@ page contentType="text/html; charset=GB2312"  %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %> 
<logic:redirect forward="index.html"/>

type Exception report

message 

description The server encountered an internal error () that prevented it from fulfilling this request.

exception 

org.apache.jasper.JasperException
  org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
  org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
  org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause 

java.lang.NullPointerException
  org.apache.struts.taglib.TagUtils.computeURLWithCharEncoding(TagUtils.java:446)
  org.apache.struts.taglib.TagUtils.computeURLWithCharEncoding(TagUtils.java:329)
  org.apache.struts.taglib.logic.RedirectTag.generateRedirectURL(RedirectTag.java:296)
  org.apache.struts.taglib.logic.RedirectTag.doEndTag(RedirectTag.java:270)
  org.apache.jsp.index_jsp._jspx_meth_logic_redirect_0(index_jsp.java:88)
  org.apache.jsp.index_jsp._jspService(index_jsp.java:59)
  org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
  org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
  org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
  org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:802)