JSP自定义日历标签
1.配置文件：
将jstl.jar和standard.jar两jar包配置到WEB－INF下的lib目录或是根目录下的lib目录下。
2.配置tld文件
calendar.tld －－－>文件名任意
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | < ?xml version="1.0" encoding="UTF-8"?> < !DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd"> <taglib> <tlib -version>1.0</tlib> <jsp -version>2.0</jsp> <short -name>jr</short> <uri>calendar@huaiyu.com</uri> <tag> <name>calendar</name> </tag><tag -class> com.kettas.servlet.TagCalendar </tag> <body -content>empty</body> </taglib> |
name指定标签名
tag -class标签名于相应的类对应
3.类文件 ：TagCalendar.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | package com.kettas.servlet; import java.io.IOException; import java.util.Calendar; import java.util.GregorianCalendar; import javax.servlet.jsp.JspException; import javax.servlet.jsp.tagext.TagSupport; import javax.servlet.jsp.JspWriter; public class TagCalendar extends TagSupport { private static final long serialVersionUID = -7677534442361565504L; @Override public int doStartTag() throws JspException { JspWriter out = pageContext.getOut(); StringBuffer sCalendar = new StringBuffer(); GregorianCalendar gc = new GregorianCalendar(); int today = gc.get(Calendar.DAY_OF_MONTH); int month = gc.get(Calendar.MONTH); int year = gc.get(Calendar.YEAR); String days[] = new String[42]; for (int i = 0; i < 42; i++) { days[i] = ""; } Calendar cal = Calendar.getInstance(); cal.clear(); cal.set(Calendar.MONTH, month); // 设置当月 cal.set(Calendar.YEAR, year); // 设置当年 cal.setFirstDayOfWeek(Calendar.SUNDAY);// 设置星期天开始 cal.set(Calendar.DAY_OF_MONTH, 1); // 设置1号 int firstIndex = cal.get(Calendar.DAY_OF_WEEK) - 1; // 取得当月1号所在的星期数 int maxIndex = cal.getActualMaximum(Calendar.DAY_OF_MONTH); // 取得当月的最大天数 for (int i = 0; i < maxIndex; i++) { days[firstIndex + i] = String.valueOf(i + 1); } try { sCalendar.append(" <table border='0' width='168' height='81'>"); sCalendar.append(" <tr> <td colspan='7' align='center'>"+year + "年" + (month + 1) + "月" + today+"日</td> </tr> "); sCalendar.append(" <tr> <th width='25' height='16'><font color='red'>日</font></th> "); sCalendar.append(" <th width='25' height='16'>一</th> <th width='25' height='16'>二</th> "); sCalendar.append(" <th width='25' height='16'>三</th> <th width='25' height='16'>四</th> "); sCalendar.append(" <th width='25' height='16'>五</th> <th width='25' height='16'><font color='red'> 六</font></th> </tr> "); for(int i=0;i<6;i++){ sCalendar.append(" <tr>"); for(int j=i*7;j< (i+1)*7;j++){ sCalendar.append(" <td width='15%' height='16' valign='middle' align='center'>"); if((j-firstIndex+1)==today){ sCalendar.append("<font color='red'>"+days[j]+"</font>"); }else{ sCalendar.append(days[j]); } sCalendar.append(""); } sCalendar.append("</tr> "); } sCalendar.append(""); out.print(sCalendar.toString()); } catch (IOException e) { e.printStackTrace(); } return TagSupport.SKIP_BODY; } } |
4.jsp文件：calendar.jsp
1 2 3 4 5 6 7 8 9 10 11 12 13 | < %@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
< %@ taglib prefix="jr" uri="calendar@huaiyu.com"%>
< !DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</meta></head>
<body>
<jr :calendar/>
</body>
</html> |
－－－－－>注意jsp文件中的uri与tld中的uri相一致，不然找不到tld文件
留言。。