Nice to meet you, nice to meet you.
I have a question regarding the version upgrade of struts2 (2.3.16.3→2.3.35), but if you are an expert, please help me.
Thank you for your cooperation.
Currently, I have replaced the jar file and the following message appeared on the jboss side when I was running.
JBWEB000236: Servlet.service() for servlet jsp thread exception: tag 'select', field 'list', name 'xxxx.xxxxTiming': The requested list key'#_AAA_list' could not be resolved as a collection/array/map/enumeration/type {Example}:
<td width="60%">
<s:set var="_AAA_list" value="%{#{}}"/>
<s:iterator value="#xxx.xxxList" var="item">
<s:set var="BBBValue" value="#item.value"/>
<%java.lang.String BBBValue=
(java.lang.String) pageContext.getAttribute("BBBValue");%>
<%if(XXXXX.checkXXX(request, "/xxx/xxx/xxx/dummy_"+BBBValue)){%>
<s:if test="#item.value==\"x\"|#item.value==\"y\">
<s:set var="_AAA_list" value="%{#_AAA_list.put(#BBBValue, #item.name),
#_AAA_list}"/>
</s: if>
<%}%>
</s:iterator>
<s:select name="xxxx.xxxxTiming" list="#_AAA_list"
value="#xxx.xxxx.xxxx.xxx"/>
<s:fielderror fieldName="xxx.xxxx"/>
</td>
After a lot of research, when <s:select was displayed, #_AAA_list was found to be the cause of null.
Debugging also shows the item.value, item.name,
The neck is value="%{#_AAA_list.put(#BBBValue, #item.name), #_AAA_list}", which is causing #_AAA_list to be null.
In order to upgrade the version, ognl-3.0.6.jar was also uploaded to ognl-3.0.21.jar.
The above code goes well to 2.3.16.3 in struts, but not to 2.3.35.
struts
It has been repaired and resolved as below.Thank you for everything.
<s:set var="_AAA_list" value="%{#{}}"/>
<s:set var="_AAA_list"
value="#@java.util.LinkedHashMap@{}"/>
Modify to
<s:set var="_AAA_list" value="%{#_AAA_list.put(#BBBValue, #item.name),
#_AAA_list}"/>
<s:set value="#_AAA_list.put(#BBBValue, #item.label)"/>
I modified it to , and it worked.
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