关于jsp动态引入servlet数据的方法

有时候我们jsp需要展示的页面是从数据库里动态引入的
所以需要先链接到一个servlet，再跳转到jsp页面
那么要怎么做呢
首先使用jsp的动态引入

url的链接就是servlet的链接
然后在servlet中获取数据中使用req的跳转

 protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        resp.setContentType("text/html;charset=utf-8");

        BookService bs = new BookServiceImpl();
        List lb = bs.ShowAllBooks();
        req.setAttribute("books",lb);
        req.getRequestDispatcher("FontMain/bookright.jsp").include(req,resp);
    }

注意是include不是reforword
最后显示的bookright页面就是我们所要的页面了

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
  Created by IntelliJ IDEA.
  User: sz101
  Date: 2019/11/10
  Time: 9:52
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    
    
    




    

        

            
            
${book.image_id}
        
        

            

                
${book.name}
                
${book.author}
                
${book.description}
                
${book.price}