set - Set variable

<set>

Set new variable

Introduce

Set new variable to variable value in context or session,
you can use the Ognl expression to get the properties and methods of variable
value in context or session.

Attribute

var(required)
Set new variable

setScope(optional)
Set the scope of the variable

Property
context:Set variable to context(default)
session:Set variable to session

value(required)
Get variable value, can also get the Ognl values of the variable

Optional value
"str":String
{"e1","e2","e3"}:List
#{"key1":"value1","key2":"value2"}:Map

valueScope(optional)
The scope of the variable

Property
context:Get variable from context(default)
session:Get variable from session

Example:

• demo/tag/tag.jmr.xml - common/set

Set rule

Set new variable in var, the value get from context or session.

Process equivalent to: Object value = context.getVariable(key)
Object value = context.getSessionVariable(key) Then the set new variable stores the values:
context.setVariable(newKey, value)
context.setSessionVariable(newKey, value)

Example:
In template or action, set 2 variables, id and name

Set new variable id_1 and name_1 to store the id and name,
and use get tag to output id_1 and name_1. 

Result

You can also set to session and get through scope from session

Result

Custom value

As long as the value that conforms to Ognl can be set to new variable.

1.String
2.Numbers, Ognl can convert to Java type
3.List:{"e1","e2","e3"}
4.Map:#{"key1":"value1","key2":"value2"}
5.Ognl expression, for example 1 == 1, the value is true

All of the "" can be replaced by ''

Example:
1.String: The value of a and B are str， if outside is '', inside is "", 
if inside is "", outside is ''.
2.Numbers: c's value is 1, Ognl convert to Integer; d's value is 1.1，
Ognl convert to Double.
3.List: Writing is {"e1","e2","e3"}.
4.Map: Writing is #{"key1":"value1","key2":"value2"}.
5.Ognl expression: 1 == 1 the value is Boolean type.

Use get tag to get them

Result

Usage example

Set new variable value can also get the chain field or method

The above example

new variable e, get string uppercase;
new variable f, The result of a multiplication formula;
new variable g, get the list size;
new variable h, get the value of the Map key key2.

Result