Struts2自定义转换器输入生日日期输出年、月、日、年龄

BirthAction.java

package com.action;

import java.util.Calendar;

import java.util.Map;

import com.bean.Birth;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class BirthAction extends ActionSupport {

    private Birth bir;

    public Birth getBir() {

        return bir;

    }

    public void setBir(Birth bir) {

        this.bir = bir;

    }

    public String execute() throws Exception {

        Calendar cal = Calendar.getInstance();

        int yearNow = cal.get(Calendar.YEAR);

        int monthNow = cal.get(Calendar.MONTH)+1;

        int dayNow = cal.get(Calendar.DAY_OF_MONTH);

        int yearBirth=Integer.parseInt(bir.getYear());

        int monthBirth=Integer.parseInt(bir.getMonth());

        int dayBirth=Integer.parseInt(bir.getDay());

        int age=yearNow-yearBirth;

        if(monthNow<=monthBirth){

            if(monthNow == monthBirth){

                if (dayNow < dayBirth) age--;

            }

            else{

                age--;

            }

        }

        Map session = ActionContext.getContext().getSession();

        session.put("age", age);

        return SUCCESS;

    }

}

BirthConverter.java:

package com.action;

import java.util.Map;

import org.apache.struts2.util.StrutsTypeConverter;

import com.bean.Birth;

public class BirthConverter extends StrutsTypeConverter {

    @Override

    public Object convertFromString(Map arg0, String[] arg1, Class arg2) {

        Birth bir = new Birth();

        String[] str = arg1[0].split("-");

        bir.setYear(str[0]);

        bir.setMonth(str[1]);

        bir.setDay(str[2]);

        return bir;

    }

    @Override

    public String convertToString(Map arg0, Object arg1) {

        Birth bir = (Birth)arg1;

        return "[" + bir.getYear() + "-" + bir.getMonth() + "-" + bir.getDay() + "]";

    }

}

BirthAction-conversion.properties：

bir=com.action.BirthConverter

　　Birth.java:

package com.bean;

public class Birth {

    private String year;

    private String month;

    private String day;

    public String getYear() {

        return year;

    }

    public void setYear(String year) {

        this.year = year;

    }

    public String getMonth() {

        return month;

    }

    public void setMonth(String month) {

        this.month = month;

    }

    public String getDay() {

        return day;

    }

    public void setDay(String day) {

        this.day = day;

    }

}

struts.xml

<?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>

    <package name="default" extends="struts-default">

        <action name="myBirth" class="com.action.BirthAction">

            <result name="success">/show.jsp</result>

        </action>

    </package>

</struts>

index.jsp

<%@taglib uri="/struts-tags" prefix="s" %>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>Date界面</title>

  </head>

  <body>

  <s:form action="myBirth" method="post">

    <s:textfield name="bir" label="请输入生日"></s:textfield>

    <s:submit value="提交"></s:submit>

  </s:form>

  </body>

</html>

show.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%@taglib  uri="/struts-tags" prefix="s"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>Date界面</title>

  </head>

  <body>

  生日：<s:property value="bir"/><br>

   年：<s:property value="bir.year"/><br>

   月：<s:property value="bir.month"/><br>

   日：<s:property value="bir.day"/><br>

   年龄：<%=session.getValue("age") %>

  </body>

</html>