<%--
Created by IntelliJ IDEA.
User: admin
Date: 2023/6/29
Time: 16:29
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%--
c:if :来完成逻辑判断，替换Java if else
--%>
<%-- <c:if test="true">
<h1>true</h1>
</c:if>
<c:if test="false">
<h1>false</h1>
</c:if>--%>
<c:if test="${status == 1}">
启用
</c:if>
<c:if test="${status == 0}">
禁用
</c:if>
</body>
</html>
package com.itheima.web;
import com.itheima.pojo.Brand;
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 java.io.IOException;
import java.util.ArrayList;
import java.util.List;
@WebServlet("/Demo1")
public class ServletDemo1 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//1. 准备数据
List<Brand> brands = new ArrayList<Brand>();
brands.add(new Brand(1,"三只松鼠","三只松鼠",100,"三只松鼠，好吃不上火",1));
brands.add(new Brand(2,"优衣库","优衣库",200,"优衣库，服适人生",0));
brands.add(new Brand(3,"小米","小米科技有限公司",1000,"为发烧而生",1));
//2. 存储到request域中
request.setAttribute("brand",brands);
request.setAttribute("status",1);
//3. 转发到 el-demo.jsp
// request.getRequestDispatcher("/el-demo.jsp").forward(request,response);
request.getRequestDispatcher("/jst-if.jsp").forward(request,response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request,response);
}
}
标签：request,response,JSTL,brands,import,servlet,javax From： https://www.cnblogs.com/Karl-hut/p/17514590.html