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[jsp-dev] Tag attribute value in #{expr} syntax with page directive attribute deferredSyntaxAllowedAsLiteral=true
  • From: Padmanabha Bhat <padmanabha.bhat@xxxxxxxxxx>
  • Date: Tue, 4 Feb 2025 10:48:12 +0000
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  • Thread-topic: Tag attribute value in #{expr} syntax with page directive attribute deferredSyntaxAllowedAsLiteral=true

Hi All,

   I am sending this e-mail to understand the expected behavior on accessing the test.jsp from the attached .war file. I have kept the source SimpleTag.java for your reference. Also please ignore WEB-INF/weblogic.xml. I have also attached the sample response from WebLogic (weblogic_response.log) and GlassFish (glassfish_response.log). I have used GlassFish 7.0.21, built with commit 8dadcddebd0bb8151d4f82052ca810226c340227 for this exercise.

 

With my limited understanding of the JSP spec, with page directive attribute deferredSyntaxAllowedAsLiteral=true, the setter method setBarExpr in SimpleTag.java won't set the value for barExpr as the value is not a ValueExpression. If it is not correct, can you please explain the expected behavior and the reason for the same ?

 

Thanks,

--Bhat

tag handle:
Inside setFooExpr, value is a String
Inside setBarExpr, barExpr is ValueExpression[\#{foo}-\#{bar}-\#{foo}-\#{1+2}]
Inside setBarExpr, value is not of type ValueExpression, and is ValueExpression[\#{foo}-\#{bar}-\#{foo}-\#{1+2}]
Tag invoked
Before printing the expression
fooExpr=tuxedo-weblogic-tuxedo-3
barExpr=#{foo}-#{bar}-#{foo}-#{1+2}

template text:
tuxedo-weblogic-tuxedo-3

Attachment: el_bug.war
Description: el_bug.war

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