[show] java.lang.NullPointerException

javax.el.ELException: java.lang.reflect.InvocationTargetException
	at com.caucho.el.StaticMethodExpr.evalMethod(StaticMethodExpr.java:140)
	at com.caucho.el.FunctionExpr.getValue(FunctionExpr.java:69)
	at com.caucho.el.Expr.print(Expr.java:416)
	at _jsp._web__ajax._ranking._listrankingitem__jsp._jspService(web.ajax/ranking/listrankingitem.jsp:148)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:61)
	at com.caucho.jsp.Page.pageservice(Page.java:578)
	at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:195)
	at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:97)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
	at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:504)
	at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:368)
	at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:1009)
	at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:962)
	at _jsp._site._ranking._index__jsp._jspService(site/ranking/index.jsp:105)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:61)
	at com.caucho.jsp.Page.pageservice(Page.java:578)
	at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:195)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
	at com.xiaode.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:92)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
	at com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:436)
	at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
	at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
	at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
	at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.GeneratedMethodAccessor111.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:622)
	at com.caucho.el.StaticMethodExpr.evalMethod(StaticMethodExpr.java:131)
	at com.caucho.el.FunctionExpr.getValue(FunctionExpr.java:69)
	at com.caucho.el.Expr.print(Expr.java:416)
	at _jsp._web__ajax._ranking._listrankingitem__jsp._jspService(web.ajax/ranking/listrankingitem.jsp:148)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:61)
	at com.caucho.jsp.Page.pageservice(Page.java:578)
	at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:195)
	at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:97)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
	at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:504)
	at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:368)
	at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:1009)
	at com.caucho.jsp.PageContextImpl.include(PageContextImpl.java:962)
	at _jsp._site._ranking._index__jsp._jspService(site/ranking/index.jsp:105)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:61)
	at com.caucho.jsp.Page.pageservice(Page.java:578)
	at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:195)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
	at com.xiaode.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:92)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
	at com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:436)
	at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
	at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
	at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
	at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.NullPointerException
	at com.xiaode.web.content.UIFunc.getSuminvestName(UIFunc.java:1061)