struts2自定义类型转换(一)基于DefaultTypeConverter

struts2自定义类型转换(1)基于DefaultTypeConverter

User.java

package com.org;public class User {private String username;private String password;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}}
UserAction.javapackage com.org;import com.opensymphony.xwork2.ActionSupport;public class UserAction extends ActionSupport {private User user;public void setUser(User user) {this.user = user;}public User getUser() {return user;}@Overridepublic String execute()throws Exception{System.out.println("username: "+getUser().getUsername());System.out.println("password: "+getUser().getPassword());return SUCCESS;}}
编写类型转换器 UserConvert.javapackage com.org;import java.util.Map;import java.util.StringTokenizer;import ognl.DefaultTypeConverter;public class UserConvert extends DefaultTypeConverter {@Overridepublic Object convertValue(Map context, Object value, Class toType) {// TODO Auto-generated method stub//从前台转后台if(User.class == toType){ String str[] = (String[])value; String v = str[0]; //取出字符串 StringTokenizer st = new StringTokenizer(v,";"); String username = st.nextToken(); String password = st.nextToken(); User user = new User(); user.setUsername(username); user.setPassword(password); return user; }else if(String.class == toType){ //从后台转到前台 User user = (User)value; String username = user.getUsername(); String password = user.getPassword(); return "Username: "+username+",Password: "+password;}return null;}}
UserAction-conversion.properties配置文件

user=com.org.UserConvert

info.jsp

<body> 请输入用户名和密码中间以分号隔开：<br> <form action="userAction" method="post">  <input type="text" name="user"><br> <input type="submit" value="提交"/> </form> </body>

success.jsp

用struts2标签取出数据

<body> SUCCESS!!!<s:property value="user"/> </body>
struts.xml配置文件

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"><struts> <constant name="struts.enable.DynamicMethodInvocation" value="false" /> <constant name="struts.devMode" value="false" /> <package name="default" extends="struts-default"> <action name="userAction" src="/img/2012/09/14/1548123611.png"></p><p>?</p><p><img alt="struts2自定义类型转换(一)基于DefaultTypeConverter" style="max-width: 100%;height: auto;width: auto\9;" src="//img.reader8.net/uploadfile/jiaocheng/20140140/2726/2014012719260019110.gif"></p> </p></div><div style="margin:0 auto;width:300px;height:250px;position:relative;"> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-6147101717324856" data-ad-slot="1958144088" data-ad-format="auto"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script></div> <div class="subn-nav"><a href="//m.reader8.net">读书人网</a> ><a href="//m.reader8.net/jiaocheng/biancheng/">编程</a></div><div class="sp-jctu"><h3><span> 热点推荐 </span></h3><ul><li><p><a href="//m.reader8.net/jiaocheng/20150822/2672277.html">JAVA基础-java中ET的差异</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140726/2508209.html">ByteBuffer跟String的互相转换</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140726/2508208.html">vim 编辑器的三种模式怎么切换</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140725/2505463.html">电脑编码</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140725/2505462.html">地图reduce编程模型介绍</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140724/2502708.html">Java基础java缓存读写资料小例子</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140724/2502707.html">学习jar下令创建和解压jar文件包</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140723/2499938.html">java生成随机数、四舍五入、当前时间的</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140723/2499937.html">[猖獗Java讲义精粹] 第十一章|多线程</a></p></li> <li><p><a href="//m.reader8.net/jiaocheng/20140722/2497120.html">Java Thread 小结</a></p></li> </ul></div><div style="display:none;"> <script> var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "//hm.baidu.com/hm.js?d6151f323a57d16696165e47eee86d53"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); </script></div> <div class="footer"><p>触屏版 | <a href="//www.reader8.net/jiaocheng/20120920/1832761.html#fromapp">电脑版</a></p><p>读书人网 m.reader8.net</p></div> <script language="javascript"> function clickme(sad){ var divobjdiv = document.getElementById("divobjdiv" + sad); if(divobjdiv.style.display =="none"){ divobjdiv.style.display ="block"; }else{ divobjdiv.style.display ="none"; } var wenzi = document.getElementById('divobjimg' + sad); if(wenzi.innerText == "收起"){ wenzi.innerText = "查看更多"; }else{ wenzi.innerText = "收起"; } } </script> <div id="back-top"><a href="#top"><span></span></a></div> </body> </html>