首先创建日期的处理MBirthday类
package com.dhyj.utils;
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class MBirthday {
public static String age(java.util.Date brithday ) throws Exception {
if (brithday==null){
return "无";
}
Calendar cal = Calendar.getInstance();
cal.setTime(brithday);
int year = cal.get(Calendar.YEAR);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(new java.util.Date());
int year2 = cal2.get(Calendar.YEAR);
year2=year2-year;
return String.valueOf(year2);
}
public static String ageex(String brithday ) throws Exception {
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");//小写的mm表示的是分钟
java.util.Date date=sdf.parse(brithday);
return age(date);
}
}
在自己的web下面创建tld文件夹加入FenDate.tld写入一下内容
<?xml version="1.0" encoding="UTF-8"?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/webjsptaglibrary_2_0.xsd"
version="2.0">
<description>functions library by feng, 2012-08-11</description>
<display-name>functions of feng</display-name>
<tlib-version>1.0</tlib-version>
<short-name>fen</short-name>
<uri>http://www.kingmed.com.cn</uri>
<function>
<name>age</name>
<function-class>com.dhyj.utils.MBirthday</function-class> 这里写你刚才创建类的全路径
<function-signature>java.lang.String age(java.util.Date)</function-signature>
</function>
<function>
<name>ageex</name>
<function-class>com.dhyj.utils.MBirthday</function-class> 这里写你刚才创建类的全路径
<function-signature>java.lang.String ageex(java.lang.String )</function-signature>
</function>
</taglib>
在jsp界面中引入一下
<%@ taglib prefix="fen" uri="http://www.kingmed.com.cn"%>
${fen:ageex(变量)}岁 如 ${fen:ageex('1993-01-02')}岁 ${fen:ageex(info.birthDay)}岁 ${fen:ageex('1993-01-02 12:12:12')}岁
都是可以计算的。