When I write
<session:set-attribute
name="user"><xsp:expr>user</xsp:expr></session:set-attribute>
I get an error :
java.lang.NullPointerException
But I don't understand, If I take the line, make a copy-paste of the
same line it works. Then after some refreshes it don't work again!
I don't understand! Why??? I'm sure <xsp:expr>user</xsp:expr> is
correct, and <session:set-attribute name="user"> is correct to!
Thanks for your help
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