struts2标签实现下拉列表级联操作
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@taglib prefix="s" uri="/struts-tags" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><body>请选择城市：<s:form name="cityform"> <s:set name="citys" value="#{ '河南省':{'郑州市','濮阳市','开封市'}, '湖北省':{'武汉市','武昌市','汉口市'}, '山东省':{'济南市','淄博市','青岛市'}}"></s:set> <s:doubleselect label="选择你所在城市：" name="province" list="#citys.keySet()" doubleName="city" doubleList="#citys[top]"></s:doubleselect></s:form></body></html>