Para o pessoal que saca mesmo de webwork, ou já passou por erros parecidos com estes…que podem me ajudar …
1º Exception
java.lang.NullPointerException
com.opensymphony.xwork.DefaultActionProxy.<init>(DefaultActionProxy.java:58)
com.opensymphony.xwork.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:40)
com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceAction(ServletDispatcher.java:180)
com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:162)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
com.opensymphony.webwork.lifecycle.RequestLifecycleFilter.doFilter(RequestLifecycleFilter.java:62)
2ºException
javax.servlet.ServletException: javax.servlet.jsp.JspException: Fatal exception caught in com.opensymphony.webwork.views.jsp.ui.TextFieldTag tag class, doEndTag: null
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:821)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.index_jsp._jspService(index_jsp.java:116)
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)
root cause
java.lang.NullPointerException
com.opensymphony.webwork.views.jsp.ui.AbstractUITag.mergeTemplate(AbstractUITag.java:255)
com.opensymphony.webwork.views.jsp.ui.AbstractUITag.doEndTag(AbstractUITag.java:120)
org.apache.jsp.index_jsp._jspx_meth_ww_textfield_0(index_jsp.java:136)
org.apache.jsp.index_jsp._jspService(index_jsp.java:98)
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)