Struts学习之局部类型转换器以及全局类型转换器
HelloWorld:
package cn.com.user;import java.util.Date;public class HelloWorld {private String message;private String savePath;private Date birthday;public Date getBirthday() {return birthday;}public void setBirthday(Date birthday) {System.out.println(birthday);this.birthday = birthday;}public String getSavePath() {return savePath;}public void setSavePath(String savePath) {this.savePath = savePath;}public String getMessage() {return message;}public void setMessage(String message) {this.message = message;}public String execute(){message="我的第一个struts应用！";return "success";}}
过滤器：
package cn.com.user;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Map;public class DefaultTypeConverter extendscom.opensymphony.xwork2.conversion.impl.DefaultTypeConverter {@Overridepublic Object convertValue(Map<String, Object> context, Object value,Class toType) {SimpleDateFormat dateFormat=new SimpleDateFormat("yyyyMMdd");try{if(toType==Date.class){String[] params=(String[])value;return dateFormat.parse(params[0]);}else if(toType==String.class){Date date=(Date)value;return dateFormat.format(date);}}catch(ParseException e){}return null;}}
局部过滤器配置文件（名为HelloWorld-conversion.properties）：
birthday=cn.com.user.DefaultTypeConverter
全局过滤器配置文件（名为xwork-conversion.properties）：
java.util.Date=cn.com.user.DefaultTypeConverter
JSP界面：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@taglib prefix="s" uri="/struts-tags"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>Struts</title> </head> <body> <!-- 调用的是getMessage()方法 --> ${message} <br/> ${savePath} <br/> ${birthday} </body></html>
struts配置xml文件：
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts><!-- 设定访问的后缀名<constant name="struts.action.extension" value="do,action"></constant>--><package name="struts" namespace="/test" extends="struts-default"><action name="helloworld" class="cn.com.user.HelloWorld" method="execute"><param name="savePath">/image</param><!-- 这是为了action的属性注入值 --><result name="success">/WEB-INF/userOK.jsp</result></action></package></struts>