JSP - Scope attribute name same as EL implicit object -



JSP - Scope attribute name same as EL implicit object -

can please explain me behavior ? setting request attribute in servlet , reading in jsp .

1) dispatcher servlet code :

request.setattribute("somename", someobject);

naturally , can read in jsp ${somename}

2) if set attribute name same el implicit object name, like

request.setattribute("requestscope", someobject);

then have read ${requestscope.requestscope} !

why container able map attribute in case#1 straight in case attribute name el implicit object name need nest reference ${requestscope.requestscope} ?

el first check if given variable name 1 of reserved (implicit) variable names , utilize per specification. if not, in ${somename}, el automatically search attribute name in respectively page, request, session , application scope.

you seem expect works other way round, i.e. first attribute , implicit objects. not true. otherwise break working of implicit el objects.

jsp el

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