javax.el
类 FunctionMapper

java.lang.Object
  javax.el.FunctionMapper

直接已知子类：

FunctionMapperFactory, FunctionMapperImpl, ProtectedFunctionMapper

public abstract class FunctionMapper
extends Object

The interface to a map between EL function names and methods.

A FunctionMapper maps ${prefix:name()} style functions to a static method that can execute that function.

从以下版本开始：

JSP 2.1

构造方法摘要

FunctionMapper()

方法摘要

abstract Method

resolveFunction(String prefix, String localName) Resolves the specified prefix and local name into a java.lang.Method.

从类 java.lang.Object 继承的方法

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造方法详细信息

FunctionMapper

public FunctionMapper()

方法详细信息

resolveFunction

public abstract Method resolveFunction(String prefix,
                                       String localName)

Resolves the specified prefix and local name into a java.lang.Method.

Returns null if no function could be found that matches the given prefix and local name.

参数：

prefix - the prefix of the function, or "" if no prefix. For example, "fn" in ${fn:method()}, or "" in ${method()}.

localName - the short name of the function. For example, "method" in ${fn:method()}.

返回：

the static method to invoke, or null if no match was found.