idea 写的哪里出了问题，求解

img

img

img


<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/core" %>
<%--<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/core"%>--%>
<%@ page import="entity.D_Entity" %>
<%@ page import="java.util.List" %><%--
  Created by IntelliJ IDEA.
  User: Lenovo
  Date: 2022/3/31
  Time: 15:34
  To change this template use File | Settings | File Templates.
--%>
<%--<%@ taglib uri="http://java.sun.com/jsp/jstl/core"  prefix="x"%>--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <table border="1" cellpadding="0" cellspacing="0" width="800px">
        <tr>
            <td>编号</td>
            <td>机名</td>
            <td>CPU</td>
            <td>主板</td>
            <td>内存</td>
            <td>显卡</td>
            <td>硬盘</td>
            <td>操作</td>
        </tr>
        

        <x:forEach items="${list}" var="s" >
        <tr>
            <td>${s.D_ID}</td>
            <td>${s.D_NAME}</td>
            <td>${s.D_CPU}</td>
            <td>${s.D_BOARD}</td>
            <td>${s.D_MEMORY}</td>
            <td>${s.D_CARD}</td>
            <td>${s.D_HARBDISK}</td>
            <td > <a href="DelDIY_Servlet?id=${s.D_ID}">删除</a></td>
        </tr>
        </x:forEach>

    </table>

img


后面好像有一个这个

你导入jstl包了没？