<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@page import="myFirstWeb_4.DTO"%>

<%@page import="myFirstWeb_4.DAO"%>

<%@page import="java.util.ArrayList"%>


<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title>mainPage</title>

</head>


<style>

.th_postNo {

width: 50px;

}


.th_title {

width: 500px;

}


.th_writer {

width: 100px;

}


.th_date {

width: 100px;

}

</style>

<body>

<%

DAO dao = new DAO();

ArrayList<DTO> list = new ArrayList<DTO>();

%>

<table class="table" border="1">

<th class="th_postNo">Post #</th>

<th class="th_title">Title</th>

<th class="th_writer">Writer</th>

<th class="th_date">Date</th>

<%

list = dao.selectAll();

for (int i = 0; i < 20; i++) {

%>

<tr>

<td class="td_postNo"><%=list.get(i).getId()%></td>

<td class="td_title"><%=list.get(i).getTitle()%></td>

<td class="td_writer"><%=list.get(i).getWriter()%></td>

<td class="td_date"><%=list.get(i).getDate()%></td>

</tr>

<%}%>

</body>

</html>

<td class="td_postNo"><%=list.get(i).getId()%></td> 여기서 자꾸 에러나는데 원인을 모루게쏘요