编写一个showCalendar.tag，该Tag文件负责显示日历，编写一个jsp页面giveYearMonth.jsp，该jsp页面使用Tag标记调用ShowCalendar.tag文件，并且向ShowCalendar.tag文件传递年份和月份。

运行效果：

jsp日历 bestcoder编程学习网

giveYearMonth.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib tagdir="/WEB-INF/tags" prefix="rili" %>

<title>Insert title here</title> </head> <body> <p>调用Tag文件来显示日历</p> <rili:ShowCalendar year="2015" month="10" /> </body> </html>

ShowCalendar.tag

<%@ tag language="java" pageEncoding="UTF-8"%> <%@ tag import="java.util.*"%> <%@ attribute name="year" required="true"%> <%@ attribute name="month" required="true"%>


<%

int y = 1991;

int m = 1;

String[] day = new String[42];

try {

y = Integer.parseInt(year);

m = Integer.parseInt(month);

Calendar rili = Calendar.getInstance();

rili.set(y, m - 1, 1);

int data = rili.get(Calendar.DAY_OF_WEEK) - 1;

int dayAmount = 0;

if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12)

dayAmount = 31;

if (m == 2 || m == 4 || m == 6 || m == 9 || m == 11)

dayAmount = 30;

if (m == 2)

if (((y % 4 == 0) && (y % 100 != 0)) || (y % 400 == 0))

dayAmount = 29;

else

dayAmount = 28;

for (int i = 0; i < data; i++)

day[i] = "--";

for (int i = data, n = 1; i < data + dayAmount; i++) {

day[i] = String.valueOf(n);

n++;

}

for (int i = data + dayAmount; i < 42; i++)

day[i] = "--";

} catch (Exception e) {

out.println("年份或月份不合理。");
}

%>
<h3><%=year%>年<%=month%>月的日历：

</h3>

<table border=1>

<tr>

<th>星期日</th>

<th>星期一</th>

<th>星期二</th>

<th>星期三</th>

<th>星期四</th>

<th>星期五</th>

<th>星期六</th>

</tr>