我正在编写一个程序，当有一个日期更改时，会创建一个表。但问题是，首先在选择日期时创建表，但是当我开始更改日期时，表不会被创建，并且控制台中没有错误。以下是我的代码。
table.jsp
<html>
<head>
<link rel="stylesheet"
href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<script src="jbPivot.min.js"></script>
<link rel="stylesheet" href="jbPivot.css">
</head>
<body>
<marquee>
<h1>This is an example of ajax</h1>
</marquee>
<p>
Date: <input type="text" id="startDatePicker">
</p>
<p>
Date: <input type="text" id="endDatePicker">
</p>
<span id="somediv"> <span id="err">Select Correct Dates</span>
</span>
<script type="text/javascript" src="tableGenerator.js"></script>
</body>
</html>
tableGenerator.js
var startDate = $("#startDatePicker").datepicker({
dateFormat : 'yy-mm-dd',
onClose : function(selectedDate) {
$("#endDatePicker").datepicker("option", "minDate", selectedDate);
}
});
var endDate = $("#endDatePicker").datepicker({
dateFormat : 'yy-mm-dd',
onClose : function(selectedDate) {
$("#startDatePicker").datepicker("option", "maxDate", selectedDate);
}
});
$(document).on('change', '#startDatePicker,#endDatePicker', function() {
$('#somediv > table').remove();
$.getJSON('Controller', {
'startDate' : startDate.val(),
'endDate' : endDate.val()
}, function(searchList) {
console.log(JSON.stringify(searchList));
if (searchList.length < 1) {
$('#err').show();
$('#err').text("No Records found in Specified Dates");
} else {
$("#somediv").jbPivot({
fields : {
caseOwner : {
field : 'caseOwner',
sort : "asc",
showAll : true,
agregateType : "distinct"
},
finalStatus : {
field : 'finalStatus',
sort : "asc",
showAll : false,
agregateType : "distinct"
},
status : {
field : 'status',
sort : "asc",
showAll : false,
agregateType : "distinct"
},
Count : {
agregateType : "count",
groupType : "none"
},
},
xfields : [ "caseOwner" ],
yfields : [ "finalStatus" ],
statfields : [ "status" ],
zfields : [ "Count" ],
data : searchList
});
}
});
});
控制器
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.bean.UserBean;
import com.dao.DataDao;
import com.google.gson.Gson;
@WebServlet("/Controller")
public class Controller extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
/* Date Start */
String startDateStr = request.getParameter("startDate");
String endDateStr = request.getParameter("endDate");
System.out.println("Start date got is " + startDateStr + " and end date is " + endDateStr);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat print = new SimpleDateFormat("yyyy-MM-dd");
Date startParsedDate = null, endParsedDate = null;
String startDate = null, endDate = null;
if (startDateStr != null && !startDateStr.equals("")) {
startParsedDate = sdf.parse(startDateStr);
startDate = print.format(startParsedDate);
}
if (endDateStr != null && !endDateStr.equals("")) {
endParsedDate = sdf.parse(endDateStr);
endDate = print.format(endParsedDate);
}
System.out.println(startDate + " value and " + endDate);
/* Date End */
DataDao dataDao = new DataDao();
ArrayList<UserBean> list = dataDao.getFrameWork(startDate, endDate);
String searchList = new Gson().toJson(list);
response.setContentType("application/json");
response.setCharacterEncoding("UTF-8");
response.getWriter().write(searchList);
System.out.println("servlet Done");
} catch (Exception e) {
System.err.println(e.getMessage() + " servlet Errotr");
}
}
}
DataDAO.java
package com.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import org.bean.UserBean;
public class DataDao {
private Connection connection;
public DataDao() throws Exception {
connection = DBUtility.getConnection();
}
public ArrayList<UserBean> getFrameWork(String startDate, String endDate) throws SQLException {
String startDateFromController = startDate;
String endDateFromController = endDate;
System.out.println("DAO VAlues are " + startDateFromController + " and " + endDateFromController);
ArrayList<UserBean> list = new ArrayList<UserBean>();
PreparedStatement ps = null;
try {
String query;
if (!(startDateFromController == null) && endDateFromController == null) {
System.out.println("first block imvoked");
query = "select * from StatusTable where convert(date, [Start Time]) >= ?";
ps = connection.prepareStatement(query);
ps.setString(1, startDateFromController);
} else if (startDateFromController == null && !(endDateFromController == null)) {
System.out.println("end date is " + endDateFromController);
System.out.println("second");
query = "select * from StatusTable where convert(date, [Start Time]) <= ?";
ps = connection.prepareStatement(query);
ps.setString(1, endDateFromController);
} else if (startDateFromController == null && endDateFromController == null) {
System.out.println("Thuird block");
query = "select * from StatusTable where [Start Time] Is NOT NULL";
ps = connection.prepareStatement(query);
} else {
System.out.println("Forth block");
query = "select * from StatusTable where convert(date, [Start Time]) between ? and ?";
ps = connection.prepareStatement(query);
ps.setString(1, startDate);
ps.setString(2, endDate);
}
ResultSet rs = ps.executeQuery();
if (!rs.next()) {
System.out.println("No records found");
} else {
do {
UserBean userBean = new UserBean();
userBean.setCaseNumber(rs.getString("Case Number"));
userBean.setCaseOwner(rs.getString("Case Owner"));
userBean.setStatus(rs.getString("Status"));
userBean.setIssue(rs.getString("Issue"));
userBean.setReason(rs.getString("Reason"));
userBean.setDateOpened(rs.getString("Date/Time Opened"));
userBean.setAge(rs.getInt("Age"));
userBean.setFinalStatus(rs.getString("Final Status"));
list.add(userBean);
} while (rs.next());
}
} catch (Exception e) {
System.out.println(e + " DAO Error");
}
return list;
}
}
请让我知道我该怎么做。我应该在不刷新页面的情况下获取数据。即一旦我更改日期，更改应该反映出来。
由于