String time = request.getParameter("leaveDate");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");//yyyy-mm-dd, 会出现时间不对, 因为小写的mm是代表: 秒
Date utilDate = sdf.parse(time);
attendanceDate = new java.sql.Date(utilDate.getTime());//比如说:

前端:

<tr>
<td style="text-align:right"><label for="fillInTime">填表时间:</label></td>
<td><input class="easyui-datebox" name="fillInTime" id="fillInTime" data-options="required:true,editable:false" style="width:150px">
<!-- <input class="easyui-datetimebox" name="fillInTime" id="fillInTime" data-options="required:true,editable:false" style="width:150px">-->
</td>
</tr>
<tr>
<td style="text-align:right"><label for="cause">请假事由:</label></td>
<td><input class="easyui-textbox" id="cause" name="cause" data-options="required:true,multiline:true" style="width:300px;height:50px;">
</td>
</tr>
<tr>
<td style="text-align:right"><label for="startDate">请假起始时间:</label></td>
<td><input id="startDate" name="startDate" type="text" class="easyui-datebox" data-options="required:true,editable:false"/>
<select id="startTime" class="easyui-combobox" name="startTime" style="width:200px;" data-options="editable:false">
<option value="上午">上午</option>
<option value="下午">下午</option>
</select>
</td>
</tr>

后台:

String fillInTime = request.getParameter("fillInTime");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");//yyyy-mm-dd, 会出现时间不对, 因为小写的mm是代表: 秒
Date utilDate = sdf.parse(fillInTime);
utilDate = new java.sql.Date(utilDate.getTime());//
System.out.println(utilDate+"+++++");
String startDate = request.getParameter("startDate");
Date sdate = sdf.parse(startDate);
sdate = new java.sql.Date(sdate.getTime());//
System.out.println(sdate+"+++++");
String endDate = request.getParameter("endDate");
Date enddate = sdf.parse(endDate);
enddate = new java.sql.Date(enddate.getTime());//
System.out.println(enddate+"+++++");

输出结果为:

Edit
2015-08-01+++++
2015-08-02+++++
2019-08-04+++++