Struts I18 TAG的封装

package com.sf.framework.taglib.i18n;import org.apache.struts2.ServletActionContext;import org.apache.struts2.views.jsp.TagUtils;import com.opensymphony.xwork2.util.ValueStack;public class I18nEl {    public static  String i18n(String key) {ValueStack valueStack=TagUtils.getStack(ServletActionContext.getPageContext());return (String)valueStack.findValue("getText(\""+key+"\")", String.class, false);}}