以前用PHP時(shí)寫了一個(gè)簡(jiǎn)單的class，功能主要是解決，大量頁面上需要顯示下拉列表框選擇年/月/日/周之類的。希望對(duì)大家學(xué)習(xí)PHP和java能有幫助。

php的實(shí)現(xiàn)如下：
getCurrentDate.class.php
<?php
/*
* 功能：生成下拉列表（年/月/日/周為當(dāng)前值）
* 程序員：xiangli
* 日期：2003-01-19
*/

#---------------------------------------------------#
# 修改：2003-03-18#
# 修改原因：添加了周的生成#
#-------------------------------------------------#

class getCurrentDate{
var$Years = 2002;
var$Months = 12;
var$Days = 31;
var$Weeks = 52;

/*獲得年的下拉列表*/
function getCurrentYear()
{
for ($i = Date('Y'); $i >= $this->Years; $i--)
{
echo "<option value='$i'>{$i}年</option>\n";
}
}

/*獲得月的下拉列表*/
function getCurrentMonth()
{
for ($i = 1; $i <= $this->Months; $i++)
{
($i<10)?($m="0".$i):($m=$i);
if($i == date('m'))
echo "<option value='$m' selected>{$m}月</option>\n";
else
echo "<option value='$m'>{$m}月</option>\n";
}
}

/*獲得日的下拉列表*/
function getCurrentDay()
{
for ($i = 1; $i <= $this->Days; $i++){
if($i == date('d'))
echo "<option value='$i' selected>{$i}日</option>\n";
else
echo "<option value='$i'>{$i}日</option>\n";
}
}

/*獲得周的下拉列表*/
function getCurrentWeek()
{
for ($i = 1; $i <= $this->Weeks; $i++){
if($i == date('W'))
echo "<option value='$i' selected>{$i}周</option>\n";
else
echo "<option value='$i'>{$i}周</option>\n";
}
}
}
?>

調(diào)用如下：
includ("../public/getCurrentDate.class.php");
$getCurrentDate = net getCurrentDate();
<select name ="xxxxx">
<?=$getCurrentDate->getCurrentYear()?>
</select>
//////////////////////////////////////////////////////////


java的實(shí)現(xiàn)方法：
getCurrentDate.java
/*
* 功能：生成下拉列表（年/月/日/周為當(dāng)前值）
* 程序員：xiangli
* 日期：2003-01-19
*/

// #---------------------------------------------------#
// # 修改：2003-03-18 #
// # 修改原因：添加了周的生成 #
// #-------------------------------------------------#

import java.io.*;
import java.util.*;
import java.text.*;

public class getCurrentDate {
public int Years = 2002;
public int Months = 12;
public int Days = 31;
public int Weeks = 52;
Date myDate = new Date();
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd w");

/*獲得年的下拉列表*/
public String getCurrentYear()
{
String Content = "";
for (int i =Integer.parseInt(formatter.format(myDate).toString().substring(0, 4)); i >= Years; i--)
{
Content += "<option value='" + i + "'>" + i + "年</option>\n";
 
}
return Content;
}

/*獲得月的下拉列表*/
public String getCurrentMonth()
{
String m;
String Content = "";

for (int i = 1; i <= Months; i++)
{
m=i<10?("0" + i):Integer.toString(i);
if(i == Integer.parseInt(formatter.format(myDate).toString().substring(5, 7)))
Content += "<option value='" + m + "' selected>" + m + "月</option>\n";
else
Content += "<option value='" + m + "'>" + m + "月</option>\n";
}
return Content;
}

/*獲得日的下拉列表*/
public String getCurrentDay()
{
String Content = "";
String m;

for (int i = 1; i <= Days; i++){
m=i<10?("0" + i):Integer.toString(i);
if(i == Integer.parseInt(formatter.format(myDate).toString().substring(8, 10)))
Content += "<option value='" + m + "' selected>" + m + "日</option>\n";
else
Content += "<option value='" + m + "'>" + m + "日</option>\n";
}
return Content;
}

/*獲得周的下拉列表*/
public String getCurrentWeek()
{
String Content = "";
String m;

for (int i = 1; i <= Weeks; i++){
m=i<10?("0" + i):Integer.toString(i);
if(i == Integer.parseInt(formatter.format(myDate).toString().substring(11)))
Content += "<option value='" + m + "' selected>" + m + "周</option>\n";
else
Content += "<option value='" + m + "'>" + m + "周</option>\n";
}
return Content;
}
}


調(diào)用方法：
<jsp:useBean id="getCurrentDate" scope="session" class="getCurrentDate" />
<select name="Years">
<%=getCurrentDate.getCurrentYear()%>
</select>
<select name="Months">
<%=getCurrentDate.getCurrentMonth()%>
</select>
<select name="Days">
<%=getCurrentDate.getCurrentDay()%>
</select>
<select name="Weeks">
<%=getCurrentDate.getCurrentWeek()%>
</select>