我在 jsp 文件中遇到日期选择器问题。
当我单击 Allmeters.jsp 文件中的超链接时，它将打开meteridinfo.jsp。在这个文件中，我有一个名为meterid 的标签。我从 allmeters.jsp 中获得了这个 Meterid 值，而且我有两个字段，分别称为 fromdate 和 todate。通过使用这些日期，我从 mysql 表中获取数据，但问题是当我选择 fromdate 作为 2012-05-1 和 todate 作为 2012-05-11 时，它没有检索数据，但是当我将 todate 更改为 2012-05-31然后它显示来自 mysql 表的数据，这意味着当我选择一个月中的最后一个日期作为今天时，只有它来了。请帮助我。
AllMeters.jsp 的编码如下：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@page import="java.sql.*"%>
<html>
<head>
<title>All Meter's</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style>
td{FONT: 13px Arial,sans-serif;}
th{FONT:bold 13px Arial,sans-serif;color:white;background-color:#3366ff}
input{FONT: 13px Arial,sans-serif;border: solid 1;}
select{font: 13px Arial,sans-serif}
#button{cursor:hand}
A:hover {COLOR: red}</style>
<script type="text/javascript">
window.history.forward();
function noback() { window.history.forward(); }
</script>
</head>
<body>
<table border=1 style="" width="100%" align="center" cellpadding="5" cellspacing="0">
<tr>
<th>S No</th>
<th>Meter ID</th>
<th>Consumer ID</th>
<th>Consumer Name</th>
<th>Reading</th>
<th> Date</th>
<th>Time</th>
<th>Status</th>
<th>Sub Zone</th>
<th>Zone</th></tr>
<%
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/suwatermeter","root","sumith");
Statement st=con.createStatement();
int mid;
int SNo=1;
ResultSet rs=st.executeQuery("select * from Meter_List");
while(rs.next()){
%>
<tr><td align="center" bgcolor="#ededed"><%=SNo%></td><td align="center" bgcolor="#ededed"><a href="meteridinfo.jsp?mid=<%=rs.getInt("meterid")%>"><%=rs.getInt("Meterid")%></a></td><td align="center" bgcolor="#ededed"><%=rs.getInt("Consumerid")%></td><td bgcolor="#ededed"><%=rs.getString("Consumername")%></td><td align="center" bgcolor="#ededed"><%=rs.getInt("LastReading")%></td><td align="center" bgcolor="#ededed"><%=rs.getDate("Date")%></td><td align="center" bgcolor="#ededed"><%=rs.getTime("Time")%></td><td align="center" bgcolor="#ededed"><%=rs.getString("Status")%></td><td align="center" bgcolor="#ededed"><%=rs.getString("Subzone")%></td><td align="center" bgcolor="#ededed"><%=rs.getString("zone")%></td></tr>
<%
SNo++;
}
rs.close();
st.close();
con.close();
}
catch(Exception e){}
%>
</tbody>
<form action="" method="POST" name="frm_pages">
<table style="width: 100%;" align="center" border="0">
</table>
</body>
</html>
code of file meteridinfo.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@page import="java.sql.*"%>
<%@page import="java.util.Date"%>
<%@page import="java.text.SimpleDateFormat"%>
<%
Connection con;
String sqlQuery="";
Statement st;
ResultSet rs=null;
%>
<html>
<head>
<title>Meterid Information
</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link rel="stylesheet" type="text/css" href="style.css" />
<style>
td{FONT: 13px Arial,sans-serif;}
th{FONT:bold 13px Arial,sans-serif;color:white;background-color:#3366ff}
input{FONT: 13px Arial,sans-serif;border: solid 1;}
select{font: 13px Arial,sans-serif}
#button{cursor:hand}
A:hover {COLOR: red}</style>
<link rel="stylesheet" type="text/css" media="all" href="jsDatePick_ltr.min.css" />
<script type="text/javascript" src="jquery.1.4.2.js"></script>
<script type="text/javascript" src="jsDatePick.jquery.min.1.3.js"></script>
<script type="text/javascript">
function calendarSetup() {pick("inputField1");pick("inputField2");} //initialize calendar on each date input field
function pick(inputField){new JsDatePick({useMode:2,target:inputField,dateFormat:"%d-%m-%Y"});} //display calendar for a given date input field
</script>
</head>
<body onload=calendarSetup()>
<body onload=calendarSetup()>
<form action="./meteridinfon.jsp" method="get" name="search">
<table width="500px;"align="center" border="0" cellpadding="4" cellspacing="3" bgcolor="#cccccc" bordercolor="#000000">
<tbody><tr>
<th colspan="3" align="middle"><strong>Meter ID Readings</strong></th></tr>
<tr><td>
<input type=hidden name="mid" value="<%=request.getParameter("mid")%>">
<label name="name" value="<%=request.getParameter("mid")%>"><font size="4">Meter ID : <%=request.getParameter("mid")%></font></label></td>
</tr>
<tr><td class="options1" colspan="3">
<font size="4">From</font>
<input type="text" size="20" maxlength="10" id="inputField1" name="fromDate">
<font size="4">To</font>
<input type="text" size="20" id="inputField2" name="toDate">
</font>
</td></tr>
<tr><td style="height: 30px;" colspan="4" align="center">
<input name="Search" value="Search" style= "HEIGHT:30px" style="width: 90px; border: 1px solid rgb(13, 31, 78);" type="submit">
</td></tr>
<%
try
{
int mid=Integer.parseInt(request.getParameter("mid"));
out.println("mid ===> +"+mid);
String fromDate=request.getParameter("fromDate");
String toDate=request.getParameter("toDate");
out.println("fromDate ===> +"+fromDate);
out.println("toDate ===> +"+toDate);
String query="select LastReading,Date,Time from Meter_List where Date between str_to_date('"+fromDate+"', '%Y-%m-%d') and str_to_date('"+toDate+"', '%Y-%m-%d') and Meterid="+mid;
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/suwatermeter","root","sumith");
st=con.createStatement();
if(fromDate !=null){
rs=st.executeQuery(query);
}
//ResultSet rs=st.executeQuery("select LastReading,Date,Time from Meter_List where Meterid="+meterid);
while(rs.next()){
%>
<table width="65%" align="center">
<tr bgcolor="lightblue">
<td>Reading</td>
<td bgcolor="lightblue"><%=rs.getInt("LastReading")%></td>
</tr>
<tr bgcolor="lightblue">
<td>Installation Date</td>
<td bgcolor="lightblue"><%=rs.getDate("Date")%></td>
</tr>
<tr bgcolor="lightblue">
<td>Inastallation Time</td>
<td bgcolor="lightblue"><%=rs.getTime("Time")%></td>
</tr>
<%
}
rs.close();
st.close();
con.close();
}
catch(Exception e){
e.printStackTrace();
}
%>
</table>
</tbody>
</table>
</div>
</body>
</html>
在 mysql 表中，我的日期值如下：2012-05-10、2012-03-04、2012-03-04、2012-09-12、2012-09-12、2012-09-12、2012-09 -12。