datebasetag.java

Tree taglib,生成树的标签库

/*
    Copyright 2004 Jenkov Development

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/



package com.jenkov.prizetags.calendar.impl;

import javax.servlet.jsp.JspException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateBaseTag extends EventBaseTag {

    protected String format = "yyyy-MM-dd HH:mm";

    public String getFormat() {
        return format;
    }

    public void setFormat(String format) {
        this.format = format;
    }

    public void printDate(Date date) throws JspException{
        SimpleDateFormat dateFormatter = new SimpleDateFormat(getFormat());

        write(dateFormatter.format(date));
    }

     public void printDate(long date) throws JspException{
        SimpleDateFormat dateFormatter = new SimpleDateFormat(getFormat());

        write(dateFormatter.format(new Date(date)));
    }

    protected long getCurrentDate() throws JspException{
        CalendarTag calendarTag = (CalendarTag) findAncestorWithClass(this, CalendarTag.class);
        if(calendarTag == null){
            throw new JspException("The current date cannot be found, since this tag is not" +
                    " nested inside a calendar tag.");
        }
        return calendarTag.getCurrentDate();
    }


}