Javaweb table表格在第二行开始消失

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8" import="check.DBUtil,java.sql.* " %>
<!DOCTYPE html>
<html>
<style>
    table{
        text-align:center;
    }
    td{
        word-break : break-all;
    }
</style>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%    
    String f_week = "";
    String s_week = "";
    String f_time = "";
    String s_time = "";
    DBUtil db = new DBUtil();
    db.getConn();
    ResultSet rs = db.getResult("select * from course");
    //String username = (String)session.getAttribute("username");
    
%>
<table width="1000" border="1" >
    <tr>
        <td>课程编号</td>
        <td>课程名称</td>
        <td>授课教师</td>
        <td>总学分</td>
        <td>上课时间</td>
        <td>上课地点</td>
        <td>限制人数</td>
        <td>已选人数</td>
        <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td>
    </tr>
<%
    while(rs.next()){
         if(rs.getString(5).equals("1"))
        {
            f_week = "星期一";
        }else if(rs.getString(5).equals("2"))
        {
            f_week = "星期二";
        }else if(rs.getString(5).equals("3"))
        {
            f_week = "星期三";
        }else if(rs.getString(5).equals("4"))
        {
            f_week = "星期四";
        }else if(rs.getString(5).equals("5"))
        {
            f_week = "星期五";
        }
         
         if(rs.getString(6).equals("1"))
         {
             f_time = "8:05~9:50";
         }else if(rs.getString(6).equals("2"))
         {
             f_time = "10:15~12:00";
         }
         else if(rs.getString(6).equals("3"))
         {
             f_time = "13:35~15:20";
         }
         else if(rs.getString(6).equals("4"))
         {
             f_time = "15:45~17:30";
         }
         else if(rs.getString(6).equals("5"))
         {
             f_time = "18:30~20:45";
         }
         
         if(rs.getString(7).equals("1"))
        {
            s_week = "星期一";
        }else if(rs.getString(7).equals("2"))
        {
            s_week = "星期二";
        }else if(rs.getString(7).equals("3"))
        {
            s_week = "星期三";
        }else if(rs.getString(7).equals("4"))
        {
            s_week = "星期四";
        }else if(rs.getString(7).equals("5"))
        {
            s_week = "星期五";
        }
         
         if(rs.getString(8).equals("1"))
         {
             s_time = "8:05~9:50";
         }else if(rs.getString(8).equals("2"))
         {
             s_time = "10:15~12:00";
         }
         else if(rs.getString(8).equals("3"))
         {
             s_time = "13:35~15:20";
         }
         else if(rs.getString(8).equals("4"))
         {
             s_time = "15:45~17:30";
         }
         else if(rs.getString(8).equals("5"))
         {
             s_time = "18:30~20:45";
         }
%>
    <tr>
        <td><%=rs.getString(1) %></td>
        <td><%=rs.getString(2) %></td>
        <td><%=rs.getString(3) %></td>
        <td><%=rs.getString(4) %></td>
        <td><%=f_week %>:<%=f_time%><br><%=s_week %>:<%=s_time%></td>
        <td><%=rs.getString(9) %></td>
        <td><%=rs.getString(10) %></td>
<%
        ResultSet rs_1 = db.getResult("select count(course_id) from elective where course_id="+rs.getString(1)+"");
        while(rs_1.next())
        {
                    
%>            
        <td><%=rs_1.getString(1)%></td>        
        
<%
    session.setAttribute("choosed",rs_1.getString(1));
    }
%>
        <td><a href="checkNumber?course_id=<%=rs.getString(1)%>"><button>选课</button></a></td>
        </tr>
</table>

<%session.setAttribute("limited", rs.getString(10));}%>

</body>

</html>

img

把放下面

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