JavaServer Pages, 3rd Edition

Name

<c:set>

Synopsis

The <c:set> action sets a scoped variable or a property of a target object to the value of an expression evaluation result. The target object must be a java.util.Map or a bean with a matching property setter method.

If the evaluation result is null, the variable is removed or the property is reset (removed or set to null, depending on the type of target). Otherwise, when setting a variable or a Map entry, the type of the value is the type of the expression evaluation value. When setting a bean property, the expression evaluation value is coerced to the property type according to the rules described in Appendix C.

Syntax 1: Setting a variable, without a body

<c:set value="expression" var="var"
  [scope="page|request|session|application"] />

Syntax 2: Setting a variable, with a body

<c:set var="var" [scope="page|request|session|application"]>
  JSP elements
</c:set>

Syntax 3: Setting a property, without a body

<c:set value="expression" target="beanOrMap" property="propertyName" />

Syntax 4: Setting a property, with a body

<c:set target="beanOrMap" property="propertyName">
  JSP elements
</c:set>

Attributes

Attribute name	Java type	Dynamic value accepted	Description
value	Object	Yes	The expression to use as the value.
var	String	No	The name of the variable.
scope	String	No	Scope for the variable.
target	Object	Yes	The target object, either a java.util.Map or a bean with a setter method for property.
property	String	Yes	The target object’s property name. ...