struts2 <s:head/> 错误
在jsp页面中引入   <%@   taglib   prefix= "s "   uri= "/struts-tags "%>   <s:head/>   出现错误，java.lang.NullPointerException
org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:58)
org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBodyTagSupport.java:54)
org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:49)
org.apache.jsp.index_jsp._jspx_meth_s_head_0(index_jsp.java:82)
org.apache.jsp.index_jsp._jspService(index_jsp.java:55)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


请问这是什么原因？如何解决？谢谢

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空指针,没有找到你要的那个标签!
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标签中漏了参数??