我有一个JSP,它使用<s:action>
标记调用操作:
<s:form>
<s:action name="myaction"
namespace="/utente/include" executeResult="true"
ignoreContextParams="true" var="formattazione" />
//do something
</s:form>
调用了动作myaction
,我可以按照流程调试它。它完成没有错误,它返回成功,但然后有一个错误,我无法理解哪一个。
动作定义:
<package name="utente-include" namespace="/utente/include" extends="tiles-default">
<action name="myaction" class="com.emaborsa.doctracing.web.action.formattazione.FormattazioneCriteriUtenteAction"
method="formattazione">
<result type="tiles">mytiles.def</result>
</action>
</package>
图块定义:
<definition name="mytiles.def" template="/pages/empty.jsp">
<put-attribute name="body" value="/pages/mypage.jsp"/>
</definition>
empty.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles" %>
<tiles:insertAttribute name="body" />
例外:
GRAVE: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:49)
at org.apache.jsp.pages.utente.elencoUtenti_jsp._jspx_meth_s_005fif_005f0(elencoUtenti_jsp.java:215)
at org.apache.jsp.pages.utente.elencoUtenti_jsp._jspx_meth_s_005fform_005f0(elencoUtenti_jsp.java:155)
at org.apache.jsp.pages.utente.elencoUtenti_jsp._jspService(elencoUtenti_jsp.java:87)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
.....
编辑: 我认为它有效,但事实并非如此。实际上系统不会崩溃,但是tile页面不包含在邮件页面中。我得到的例外:
org.apache.tiles.impl.CannotRenderException: No request dispatcher returned for path '/../pages/common/myPage.jsp'
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:680)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:633)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:322)
at org.apache.struts2.views.tiles.TilesResult.doExecute(TilesResult.java:105)
at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:361)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:265)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:163)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
这里是我的myPage.jsp(实际上写的内容并不重要):
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<div class="navigazioneElenco" id="navigazioneElenco">
</div>
在这里,我分享了我的项目的一部分。只有那部分不起作用...... DOWNLOAD
答案 0 :(得分:0)
这个错误可能来自你的jsp页面。你可以发布mypage.jsp中可用的代码吗?或者手动检查你使用任何scriptlet标签可能会导致空指针异常。使用struts逻辑标记检查值。所以你可能不会遇到空指针异常。
答案 1 :(得分:0)
解决了对Struts 2.3.15.2