JSP页面中获取并显示从后端得到的值（不使用EL标签）

缺乏、安全感 2024-04-18 16:45 12阅读 0赞

**输出一表格，表格中有5个学生的信息，表格包含学号，姓名，年龄，性别，地址的信息。这里的学生对象及集合对象，在Servlet中创建，转发给jsp显示。（注意：Servlet使用的是Request域传值，所以跳转方式为转发形式，JSP使用的是"原生态"语法，没有使用EL表达式，直接与Html拼接而成）**  
**后端代码：**

package com.atguigu.servlet;
    
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.List;
    
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import com.atguigu.bean.Student;
    
    public class StudetServlet extends HttpServlet { 
    	private static final long serialVersionUID = 1L;
    
    	protected void doGet(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException { 
    		List<Student> list = new ArrayList<>();
    		list.add(new Student(1, "章登", 22, "男", "河北保定"));
    		list.add(new Student(2, "朱一龙", 23, "男", "河南郑州"));
    		list.add(new Student(3, "孙悟空", 500, "公", "花果山"));
    		list.add(new Student(4, "王靖雯", 23, "女", "哈尔滨"));
    		list.add(new Student(5, "猪八戒", 1500, "公", "高老庄"));
    		request.setAttribute("list", list);
    		request.getRequestDispatcher("Student.jsp").forward(request, response);
    	}
    
    	protected void doPost(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException { 
    		doGet(request, response);
    	}
    
    }

**JSP代码：**

<%@page import="java.util.List"%>
    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ page import="com.atguigu.bean.Student" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Insert title here</title>
    <style type="text/css"> table{ width: 500px; border: 1px solid red; border-collapse: collapse; } th , td{ border: 1px solid red; } </style>
    </head>
    <body>
    	<h1>request域取值</h1>
    		<% List<Student> list = (List)request.getAttribute("list");%>
    	<table>
    		<tr>
    			<th>学号</th>
    			<th>姓名</th>
    			<th>年龄</th>
    			<th>性别</th>
    			<th>地址</th>
    		</tr>
    		<% for(Student student:list){ %>
    		<%="<tr>" %>
    			<%="<td>"+student.getStuNo()+"</td>"%>
    			<%="<td>"+student.getStuName()+"</td>"%>
    			<%="<td>"+student.getStuAge()+"</td>"%>
    			<%="<td>"+student.getStuSex()+"</td>"%>
    			<%="<td>"+student.getAddress()+"</td>"%>
    		<%="</tr>" %>
    		<% } %>
    	</table>
    </body>
    </html>

**结果：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW4xMzMzMzMzNjY3Nw_size_16_color_FFFFFF_t_70]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW4xMzMzMzMzNjY3Nw_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/2a8ff891ff9f45bc8a288b14784c0acf.png