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Note the use of remote div is now through the dojo plugin taglib sx. Other ui tags are also no longer available through the /struts-tags taglib but only through the /struts-dojo-tags taglib: datetimepicker and autocompleter.
This is not really a migration issue but rather seems a bug when migrating:
Problem Symptom: You receive the following exception accessing a page:
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WARNING: Could not find property [struts.valueStack]
ognl.OgnlException: target is null for setProperty(null, "preventCache", [Ljava.lang.String;@5f262a85)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:1651)
at ognl.ASTProperty.setValueBody(ASTProperty.java:101)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:177)
at ognl.SimpleNode.setValue(SimpleNode.java:246)
at ognl.ASTChain.setValueBody(ASTChain.java:172)
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Resolution is to change set devMode to false in struts.xml e.g.
from
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<constant name="struts.devMode" value="true" />
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to
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<constant name="struts.devMode" value="false" />
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