JSP 字面上导致StackOverflowError - Tiles 3

jgwigjjp  于 2023-05-11  发布在  其他
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从Struts 1.3/Tiles 1.x组合迁移到Struts 2/Tiles 3。但这真的是一个瓷砖问题
以前在定义中支持bean声明以支持菜单项的功能,Tiles 3显然已经放弃了这一点。所以我转换了这个:

<definition name=".selectPatient.menu" path="/WEB-INF/templates/menu.jsp">
        <putList name="items">
            <bean classtype="org.a.m.s.jsp.MenuItem">
                <set-property property="id" value="menubar_register"/>        
                <set-property property="name" value="menubar_register"/>        
                <set-property property="title" value="Register"/>        
                <set-property property="onclick" value="registerPatient()"/>        
                <set-property property="text" value="Register"/>
                <set-property property="roles" value="BASIC,LEAD,SUPER"/>        
            </bean>
            <bean classtype="org.a.m.s.jsp.MenuItem">
                <set-property property="id" value="menubar_multitransaction"/>        
                <set-property property="name" value="menubar_multitransaction"/>        
                <set-property property="title" value="Post Multiple Transactions"/>        
                <set-property property="onclick" value="postMultiTransactions()"/>        
                <set-property property="text" value="Post Multiple Transactions"/>
                <set-property property="roles" value="BASIC,LEAD,SUPER"/>
            </bean>
        </putList>
    </definition>

和相应的menu.jsp页面:

<logic:iterate id="item" name="items" type="org.a.m.s.jsp.MenuItem">
                <%if (UserRoles.userHasRole(request,item.getRoles())){%><td><table id="button_<bean:write name="item" property="id"/>" cellpadding="0" cellspacing="0" border="0"><tr><td><img src="images/menu_button_round_edge_left2.gif"></td>
          <td style="border-top:1px white solid; border-bottom:1px white solid;">
                    <a name="<bean:write name="item" property="name"/>" id="<bean:write name="item" property="id"/>" accesskey="M" title="<bean:write name="item" property="title"/>" class="menuItem" href="#" isDisabled="false" onclick="if (this.isDisabled != 'true'&&isPageReady()) <bean:write name="item" property="onclick"/>;" 
                    onmouseover="if (this.isDisabled != 'true'&&isPageReady())document.getElementById('button_<bean:write name="item" property="id"/>').style.backgroundColor='#ffff99';" onmouseout="if (this.isDisabled != 'true'&&isPageReady())document.getElementById('button_<bean:write name="item" property="id"/>').style.backgroundColor='#000066';"><bean:write name="item" property="text"/></a></td>
          <td><img src="images/menu_button_round_edge_right2.gif" width="9" height="17"></td>
        </tr></table></td>
                <%}%>
</logic:iterate>

迁移到

  • 定义:
<definition name="defaultMenuComponent" template="/WEB-INF/templates/barbutton.jsp">
    </definition>

    <definition name="menubar_register" extends="defaultMenuComponent">
      <put-attribute name="id" value="menubar_register" cascade="true"/>
      <put-attribute name="name" value="menubar_register" cascade="true"/>
      <put-attribute name="title" value="Register" cascade="true"/>
      <put-attribute name="onclick" value="registerPatient()" cascade="true"/> 
      <put-attribute name="text" value="Register" cascade="true"/>
      <put-attribute name="roles" value="BASIC,LEAD,SUPER" cascade="true"/>   
    </definition>
    
    <definition name="menubar_multitransaction" extends="defaultMenuComponent">
      <put-attribute name="id" value="menubar_multitransaction" cascade="true"/>
      <put-attribute name="name" value="menubar_multitransaction" cascade="true"/>
      <put-attribute name="title" value="Post Multiple Transactions" cascade="true"/>
      <put-attribute name="onclick" value="postMultiTransactions()" cascade="true"/> 
      <put-attribute name="text" value="Post Multiple Transactions" cascade="true"/>
      <put-attribute name="roles" value="BASIC,LEAD,SUPER" cascade="true"/>   
    </definition>
    
    <definition name=".selectPatient.menu" template="/WEB-INF/templates/menu.jsp">
        <put-list-attribute name="items">
           <add-attribute value="menubar_register" type="definition"/>
           <add-attribute value="menubar_multitransaction" type="definition"/>   
        </put-list-attribute>
    </definition>
  • 将所有的构造逻辑推入barbutton.jsp:
<table id="button_<tiles:insertAttribute name="id" flush="true"/>" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><img src="images/menu_button_round_edge_left2.gif"></td>
<td style="border-top:1px white solid; border-bottom:1px white solid;">
<a name="<tiles:insertAttribute name="name" flush="true"/>" id="<tiles:insertAttribute name="id" flush="true"/>" accesskey="M" title="<tiles:insertAttribute name="title" flush="true"/>" class="menuItem" href="#" isDisabled="false" onclick="if (this.isDisabled != 'true'&&isPageReady()) <tiles:insertAttribute name="onclick" flush="true"/>;" onmouseover="if (this.isDisabled != 'true'&&isPageReady())document.getElementById('button_<tiles:insertAttribute name="id" flush="true"/>').style.backgroundColor='#ffff99';" onmouseout="if (this.isDisabled != 'true'&&isPageReady())document.getElementById('button_<tiles:insertAttribute name="id" flush="true"/>').style.backgroundColor='#000066';"><tiles:insertAttribute name="text" flush="true"/>
</a>
</td>
<td><img src="images/menu_button_round_edge_right2.gif" width="9" height="17"></td>
</tr>
</table>
  • menu.jsp的更改如下:
<tilesx:useAttribute id="items" name="items" classname="java.util.List"/>

  <table border=0 cellpadding=0 cellspacing=1>
  <tr>       
     <c:forEach items="${items}" var="listItem">
       <td> 
       <tiles:insertDefinition name="${listItem}" flush="true"/> 
       </td>
     </c:forEach>
  </tr>
  </table>

并且它不起作用,得到java.lang.StackOverflowError
尝试各种不同的方法

gk7wooem

gk7wooem1#

发现问题-将菜单定义重命名为.definition以与包含的属性区分开。

<definition name="defaultMenuComponent" template="/WEB-INF/templates/barbutton.jsp">
    </definition>

    <definition name=".menubar_register" extends="defaultMenuComponent">
      <put-attribute name="id" value="menubar_register" cascade="true"/>
      <put-attribute name="name" value="menubar_register" cascade="true"/>
      <put-attribute name="title" value="Register" cascade="true"/>
      <put-attribute name="onclick" value="registerPatient()" cascade="true"/> 
      <put-attribute name="text" value="Register" cascade="true"/>
      <put-attribute name="roles" value="BASIC,LEAD,SUPER" cascade="true"/>   
    </definition>
    
    <definition name=".menubar_multitransaction" extends="defaultMenuComponent">
      <put-attribute name="id" value="menubar_multitransaction" cascade="true"/>
      <put-attribute name="name" value="menubar_multitransaction" cascade="true"/>
      <put-attribute name="title" value="Post Multiple Transactions" cascade="true"/>
      <put-attribute name="onclick" value="postMultiTransactions()" cascade="true"/> 
      <put-attribute name="text" value="Post Multiple Transactions" cascade="true"/>
      <put-attribute name="roles" value="BASIC,LEAD,SUPER" cascade="true"/>   
    </definition>
    
    <definition name=".selectPatient.menu" template="/WEB-INF/templates/menu.jsp">
        <put-list-attribute name="items">
           <add-attribute value=".menubar_register" type="definition"/>
           <add-attribute value=".menubar_multitransaction" type="definition"/>   
        </put-list-attribute>
    </definition>

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