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<%@page contentType="text/html;charset=gb2312" language="java" import="java.util.*"%>
<%!
String year;
String month;
%>
<%
month = request.getParameter("month");
year = request.getParameter("year");
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>月历</title>
<script type="text/javascript">
function changeMonth()
{
var mm = "yueli.jsp?month=" + document.sm.elements[0].selectedIndex + "&year=" + <%=year%>;
window.open(mm,"_self");
}
</script>
</head>
<%! String days[]; %>
<%
//一个月的一个月的日历最多占6行,每一行都是1周(即7天),共有6 * 7个位置
days = new String[42];
for(int i = 0; i < 42; i++)
{
days[i] = "";
}
%>
<%
Calendar thisMonth = Calendar.getInstance();
if(month != null && (!month.equals("null")))
thisMonth.set(Calendar.MONTH,Integer.parseInt(month));
if(year != null && (!year.equals("null")))
thisMonth.set(Calendar.YEAR,Integer.parseInt(year));
//如果链接中不带参数,则获得当前月历
year = String.valueOf(thisMonth.get(Calendar.YEAR));
month = String.valueOf(thisMonth.get(Calendar.MONTH));
thisMonth.setFirstDayOfWeek(Calendar.SUNDAY);
thisMonth.set(Calendar.DAY_OF_MONTH,1);
int firstIndex = thisMonth.get(Calendar.DAY_OF_WEEK) - 1;
int maxIndex = thisMonth.getActualMaximum(Calendar.DAY_OF_MONTH);
for(int i = 0; i < maxIndex; i++)
{
days[firstIndex + i] = String.valueOf(i + 1);
}
%>
<body>
<center>
<font size="5" color="#0000FF">月历</font>
</center>
<br><hr><br>
<center>
<form name="sm" method="post" action="yueli.jsp">
<%=year%>年 <%=Integer.parseInt(month) + 1 %>月
<table border="0" width="168" height="81">
<div align="center">
<tr>
<th width="25" height="16" bgcolor="#FFFF00"><font color="#FF0000">日</font></th>
<th width="25" height="16" bgcolor="#FFFF00">一</th>
<th width="25" height="16" bgcolor="#FFFF00">二</th>
<th width="25" height="16" bgcolor="#FFFF00">三</th>
<th width="25" height="16" bgcolor="#FFFF00">四</th>
<th width="25" height="16" bgcolor="#FFFF00">五</th>
<th width="25" height="16" bgcolor="#FFFF00"><font color="#00FF00">六</font></th>
</tr>
<% for(int j = 0; j < 6; j++) //一个月的日历最多占6行,j表示处理第几行
{
%>
<tr>
<%
for(int i = j * 7; i < (j + 1) * 7; i++) //每一行都处理一周的日期
{
%>
<td width="15%" height="16" bgcolor="#C0C0C0" valign="middle" align="center">
<font color="#0000FF"><%=days[i]%></font>
</td>
<%
}
%>
</tr>
<%
}
%>
</div>
</table>
<table border="0" width="168" height="20">
<tr>
<td width="30%">
<select name="month" size="1" onChange="changeMonth()">
<option value="0">一月</option>
<option value="1">二月</option>
<option value="2">三月</option>
<option value="3">四月</option>
<option value="4">五月</option>
<option value="5">六月</option>
<option value="6">七月</option>
<option value="7">八月</option>
<option value="8">九月</option>
<option value="9">十月</option>
<option value="10">十一月</option>
<option value="11">十二月</option>
</select>
</td>
<td width="28%">
<input type="text" name="year" value="<%=year%>" size="4" maxlength="4">
</td>
<td>年</td>
<td width="28%">
<input type="submit" value="提交">
</td>
</tr>
</table>
</form>
</center>
<script language="javascript">
<!--
document.sm.month.options.selectedIndex=<%=month%>;
-->
</script>
</body>
</html>