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jsp学习之--一个很好的日历代码

2010-06-24 17:18 585 查看

CalendarBean.java

package red.star;

import java.util.*;

public class CalendarBean
{
String calendar = null;
int year = 1,month = -1;

public void setYear(int year)
{
this.year = year;
}
public int getYear()
{
return year;
}
public void setMonth(int month)
{
this.month = month;
}
public int getMonth()
{
return month;
}
public String getCalendar()
{
StringBuffer buffer = new StringBuffer();
Calendar rili = Calendar.getInstance();
rili.set(year,month-1,1);//將日曆翻到year年month月1日，注意0表示一月，以此類推11表示12月
//獲取1日是星期幾(get方法返回的值是1表示星期日，返回的值是7表示星期六)
int 星期幾 = rili.get(Calendar.DAY_OF_WEEK)-1;
int day = 0;
if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
{
day = 31;
}
if(month==4||month==6||month==9||month==11)
{
day = 30;
}
if(month==2)
{
if(((year%4==0)&&(year%100!=0))||(year%400==0))
{
day = 29;
}
else
{
day = 28;
}
}
String a [] = new String[42];
for(int i=0;i<星期幾;i++)
{
a[i] = "**";
}
for(int i=星期幾,n=1;i<星期幾+day;i++)
{
a[i] = String.valueOf(n);
n++;
}
for(int i=星期幾+day;i<42;i++)
{
a[i] = "**";
}
//用表格顯示數組
buffer.append("<table border=1>");
buffer.append("<tr>");
String weekday [] = {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
for(int k=0;k<7;k++)
{
buffer.append("<td>"+weekday[k]+"</td>");
}
buffer.append("</tr>");
for(int k=0;k<42;k=k+7)
{
buffer.append("<tr>");
for(int j=k;j<Math.min(7+k, 42);j++)
{
buffer.append("<td align=center>"+a[j]+"</td>");
}
buffer.append("</tr>");
}
buffer.append("</table>");
calendar = new String(buffer);
return calendar;
}
}

showCalendar.jsp

<%@ page language="java" import="java.util.*" pageEncoding="BIG5"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'showCalendar.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css" mce_href="styles.css">
-->

</head>

<body>
<jsp:useBean id="rili" class="red.star.CalendarBean" scope="request" />
<jsp:setProperty name="rili" property="*"/>
<form action="" method="post" name="form">
<!-- 輸入日曆的年份:<input type="text" value="2008" name="year" size=5>-->
輸入日曆的年份:
<select name="year">
<%
for(int i=1900;i<2500;i++)
{
if(i==2010)
{
%>
<option value=<%=i%> selected><%=i%>年</option>
<%
}
else
{
%>
<option value=<%=i%>><%=i%>年</option>
<%
}
}
%>
</select>
選擇日曆的月份:
<select name="month">
<%
for(int i=1;i<13;i++)
{
%>
<option value=<%=i%>><%=i%>月</option>
<%
}
%>
</select>
<br/><input type="submit" value="提交" name="submit">
</form>
<font color="blue"><jsp:getProperty name="rili" property="year"/></font>年
<font color="green"><jsp:getProperty name="rili" property="month"/></font>月的日曆
<jsp:getProperty name="rili" property="calendar" />
</body>
</html>

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