算术运算:
Addition: +
Subtraction: −
Multiplication: *
Exponents: E
Division: / or div
Modulus: % or mod
比较运算:
== or eq
!= or ne
< or lt
> or gt
<= or le
>= or ge
逻辑运算:
&& or and
|| or or
! or not
其他运算符:
[ ]
( )
− (unary) not ! empty
* / div % mod
+ − (binary)
< > <= >= lt gt le ge
== != eq ne
&& and
|| or
多个javabean嵌套:
${person.address[ 2 ].line1}
隐式对象:
applicationScope:
This is a Map that contains all allications-scoped variables, The Map is keyed on the name of the variable.
cooike:
This is a Map that maps cookie namas to a single Cooike object. If mare than one cookie exists for a give name, then the first of these cookies is used for that name.
header:
This a Map that contains the values of each header name.
headerVlaues:
This a Map that maps a header name to a string array of all of the possible values for that header.
initParam:
This a Map that maps context initialization parameter names to their string parameter values.
pageContext:
The PageContext object.
pageScope :
This is a Map that contains all page-scoped variables. The Map is keyed on the name of the variable.
param :
This is a Map that contains the names of the parameters to a page. Each paramter name is mapped to a single string values.
paramValus:
This is a Map that maps a parameter name to a string array of all of the values for that parameter.
requestScope:
This is a Map that contains all reqeust-scoped variables. The Map is keyed on the name of the variable.
sessionScope:
This is a Map that contains all session-scoped variables. The Map is keyed on the name of the variable.