JSP+JAVABEANS實現的WEB日歷程序

2024-09-05 00:19:03

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一個jsp+javabeans實現的web日歷程序，主要使用了calendar類！

monthbean.java
package test;
import java.text.dateformat;
import java.text.dateformatsymbols;
import java.util.*;

public class monthbean {
public final static int[]daysinmonth={31,28,31,30,31,30,31,31,30,31,30,31};
public string []monthnames=null;
protected dateformatsymbols symbols=null;
protected calendar cal=calendar.getinstance();
protected int today=cal.get(calendar.day_of_month);
protected int month=cal.get(calendar.month);
protected int year=cal.get(calendar.year);

public monthbean() {
symbols=new dateformatsymbols();
monthnames=symbols.getmonths();
}
public void setmonth(int montharg){
   this.month=montharg;
   }
public void setyear(int yeararg) {
   this.year=yeararg;
   }
public void setmonth(string montharg) {
   try{
      int month=integer.parseint(montharg);
      setmonth(month);
     }catch(exception exc){
     }
   }
public void setyear(string yeararg){
   try{
       int year=integer.parseint(yeararg);
       setyear(year); }catch(exception exc){
       }
     }
public string getmonthname() {
      return monthnames[cal.get(calendar.month)];
      }
public int gettoday(){
       return today;
       }
public int getstartcell() {
     calendar beginofmonth=calendar.getinstance();
     beginofmonth.set(year,month,0);
     return beginofmonth.get(calendar.day_of_week);
     }
public int getendcell() {
     cal.set(year,month,1); int endcell=daysinmonth[month]+getstartcell()-1;
     if(month==calendar.february && ((gregoriancalendar)cal).isleapyear(year)){
          endcell++;
           }
     return endcell;
    }
public void update() {
     cal.set(this.year,this.month,1);
    }
public string getdayname(int day,boolean longformat) {
    if(longformat)
       return symbols.getweekdays()[day];
    return symbols.getshortweekdays()[day];
    }
}

month.jsp
<%@ page contenttype="text/html;charset=gb2312" %>
<%@ page import="test.monthbean"%>
<jsp:usebean id="cal" class="test.monthbean" scope="request"/>
<%
   int today=cal.gettoday();
%>
<html>
<head>
<title>
日歷
</title>
</head>
<body bgcolor="silver" ><br><br><br>
<table border="1" align="center" width="40%" height="100"><tr bgcolor="silver" >
<td colspan="7"> <font size="+2">
<%=cal.getmonthname()%>
</font></td></tr>
<tr bgcolor="black" align="center">
<% for(int i=1;i<8;i++) {
   out.print("<td width=/"70/">");
   out.print("<font size/"-1/" color=/"white/">");
   out.print(cal.getdayname(i,true));
out.print("</front> </td>");
} %>
</tr>
<% int startcell=cal.getstartcell();
   int endcell=cal.getendcell();
    for(int cellno=0,day=1;cellno<42;cellno++) {
          if(cellno%7==0) { out.print("<tr>"); }
    out.print("<td valign=top height=57");
           if(cellno<startcell||cellno>endcell) {
               out.print(" bgcolor=/"gray/">"); }
else {
              if(day==today){ //如果為當前日期，背景色設為綠色
                   out.print(" bgcolor=/"green/">");
                        }
              else
                   out.print(">");
%>
<%=day%>
<%
     day++;
}
    out.println("</td>");
            if(cellno+1%7==0) {
                 out.print("</tr>"); }
    }   //end for loop
%>