Struts2 将两个<sx:autocompleter/>关联起来
本人最近两天想使用sx：autocpmpleter来实现地区的异步动态更新。《Struts2.1权威指南》中找到示例，结果按照示例的方式去研究怎么弄都无法现实动态更新。最后发现示例代码不全，作者很马虎导致，代码更本不可运行。在网上搜索也没有相关的完整示例代码。花了漫长的2天时间终于搞定了！个人意见仅供参考。
1.jsp代码：
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<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %><%@ taglib prefix="s" uri="/struts-tags" %><%@ taglib prefix="sx" uri="/struts-dojo-tags" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title>自动完成</title> <sx:head/></head><body><h3>将两个sx:autocompleter关联起来</h3><form id="selectForm" >请选择您喜欢的作者：<br /><sx:autocompleter name="author" list="{'1','Rod Johnson' , 'David Flanagan'}" <--list="#request['books']" listKey="id" listValue="name"--><--list="#{'1':'2','2':'3'}" listKey="%{0}" listValue="%{1}" list="#request['books']" listKey="id"<--传递的值--> listValue="name"<--显示的值--> required="id"<--指定传递的参数属性-->--> value="1" notifyTopics="/books" forceValidOption="true"/></form>请选择您喜欢的图书：<br /><sx:autocompleter name="book" href="getBooks.action" cssStyle="width: 240px;" autoComplete="false" formId="selectForm" listenTopics="/books" forceValidOption="true"/></body></html>?2.Action代码
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package lee;import java.util.ArrayList;import java.util.List;import com.opensymphony.xwork2.ActionSupport;public class GetBooksAction extends ActionSupport { private String author; private List<String> books = new ArrayList<String>(); private int num; public int getNum() { return num; } public void setNum(int num) { this.num = num; } //author属性的setter和getter方法 public String getAuthor() { return author; } public void setAuthor(String author) { this.author = HTMLDecoder.decode(author); } //books属性的getter方法 public List<String> getBooks() { return books; } //处理用户请求的execute方法 public String execute() throws Exception { if (author.equals("1")) { books.clear(); books.add("疯狂Java讲义"); books.add("轻量级Java EE企业应用实战"); books.add("疯狂Ajax讲义"); books.add("疯狂XML讲义"); num = 3; } else if (author.equals("Rod Johnson")) { books.clear(); books.add("Expert One-on-One J2EE" + " Design and Development"); books.add("Expert One-on-One J2EE" + " Design and Development"); num = 1; } else if (author.equals("David Flanagan")) { books.clear(); books.add("JavaScript权威指南"); books.add("Expert One-on-One J2EE" + " Design and Development"); num = 1; } System.out.println(books.get(0)); return SUCCESS; }}? 3.异步页面代码 ? ? ? ?<%@ page contentType="text/html;charset=GBK" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>{<s:iterator value="books" var="b" status="bs"> '<s:property/>':'<s:property/>' <s:if test="%{#bs.index<num}"> , </s:if></s:iterator>}