接口 javax.servlet.jsp.el.FunctionMapper
的使用

使用 FunctionMapper 的软件包

javax.servlet.jsp.el	Provides the ELResolver classes that define the object resolution rules that must be supported by a JSP container with the new unified Expression Language.
org.apache.jasper.runtime

javax.servlet.jsp.el 中 FunctionMapper 的使用

参数类型为 FunctionMapper 的 javax.servlet.jsp.el 中的方法

abstract Object	ExpressionEvaluator.evaluate(String expression, Class expectedType, VariableResolver vResolver, FunctionMapper fMapper) 已过时。 Evaluates an expression.
abstract Expression	ExpressionEvaluator.parseExpression(String expression, Class expectedType, FunctionMapper fMapper) 已过时。 Prepare an expression for later evaluation.

org.apache.jasper.runtime 中 FunctionMapper 的使用

参数类型为 FunctionMapper 的 org.apache.jasper.runtime 中的方法

Object	ExpressionEvaluatorImpl.evaluate(String expression, Class expectedType, VariableResolver vResolver, FunctionMapper fMapper)
Expression	ExpressionEvaluatorImpl.parseExpression(String expression, Class expectedType, FunctionMapper fMapper)