判断输入日期是否为当前日期

2018-08-18 本文已影响0人神坛下的我

StringUtil.java

import java.util.Calendar;


public class StringUtil {
    private String dateStr;//用户输入的日期
    private boolean today;//判断是否为今天
    private String cue;//提示信息
    public StringUtil(){}
    public String getDateStr() {
        return dateStr;
    }
    public void setDateStr(String dateStr) {
        dateStr=dateStr.replaceAll(" ", "");//替换日期中的空格为""
        this.dateStr = dateStr;
    }
    public boolean isToday() {
        String dateArr[]=dateStr.split("-");//将日期字符串分解成数组
        int year=Integer.parseInt(dateArr[0]);
        int month=Integer.parseInt(dateArr[1]);
        int date=Integer.parseInt(dateArr[2]);
        Calendar now=Calendar.getInstance();
        int nowYear=now.get(now.YEAR);
        int nowMonth=now.get(now.MONTH)+1;
        int nowDate=now.get(now.DAY_OF_MONTH);
        if(year==nowYear&&month==nowMonth&&date==nowDate){
            cue="输入的日期为当前日期！";
            today=true;
        }
        else {
            cue="输入的日期不是当前日期！";
            today=false;
        }
        return today;
    }
    public void setToday(boolean today) {
        this.today = today;
    }
    public String getCue() {
        return cue;
    }
    public void setCue(String cue) {
        this.cue = cue;
    }
    
}

index.jsp

<body>
    <form action="result.jsp" method="post">
        <table>
            <tr>
                <td align="right">请输入日期：</td>
                <td><input type="text" name="datestr" /><font>格式为：2012-12-12</font></td>
            </tr>
            <tr>
                <td colspan="2" align="center"><input type="submit" value="检查"/></td>
            </tr>
        </table>
    </form>
</body>

result.jsp

<body>
    <%
        request.setCharacterEncoding("utf-8");
        String datestr= request.getParameter("datestr");
    %>
    <jsp:useBean id="strBean" class="com.count.StringUtil"></jsp:useBean>
    <jsp:setProperty property="dateStr" name="strBean" value="<%=datestr %>"/>
    
    <table>
        <tr>
            <td>输入的日期：</td>
            <td align="left">
                <jsp:getProperty property="dateStr" name="strBean"/>
            </td>
        </tr>
        <tr>
            <td>是否为当前日期：</td>
            <td align="center">
                <jsp:getProperty property="today" name="strBean"/>
            </td>
        </tr>
        <tr>
            <td>提示信息：</td>
            <td align="right">
                <jsp:getProperty property="cue" name="strBean"/>
            </td>
        </tr>
    </table>
</body>

6.PNG

7.PNG

判断输入日期是否为当前日期

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