• 不用EL表达式---实现product页面显示


    产品页面显示 静态页面如下:

    <%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ page import="java.util.*" %>
    <%@ page import="cn.itcast.domain.*" %>
    <!DOCTYPE html>
    <html>
    <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>会员登录</title>
    <link rel="stylesheet" href="css/bootstrap.min.css" type="text/css" />
    <script src="js/jquery-1.11.3.min.js" type="text/javascript"></script>
    <script src="js/bootstrap.min.js" type="text/javascript"></script>
    <!-- 引入自定义css文件 style.css -->
    <link rel="stylesheet" href="css/style.css" type="text/css" />

    <style>
    body {
    margin-top: 20px;
    margin: 0 auto;
    100%;
    }

    .carousel-inner .item img {
    100%;
    height: 300px;
    }
    </style>
    </head>

    <body>


    <!-- 引入头部 -->
    <jsp:include page="/header.jsp"></jsp:include>


    <div class="row" style=" 1210px; margin: 0 auto;">
    <div class="col-md-12">
    <ol class="breadcrumb">
    <li><a href="#">首页</a></li>
    </ol>
    </div>


    <%


    //获得集合List<Product>
    List<Product> productList = (List<Product>)request.getAttribute("productList");
    if(productList!=null){
    for(Product product : productList){
    out.write("<div class='col-md-2' style='height:250px'>");
    out.write("<a href='product_info.htm'>");
    out.write("<img src='"+product.getPimage()+"' width='170' height='170' style='display: inline-block;'>");
    out.write("</a>");
    out.write("<p><a href='product_info.html' style='color: green'>"+product.getPname()+"</a></p>");
    out.write("<p><font color='#FF0000'>商城价:&yen;"+product.getShop_price()+"</font></p>");
    out.write("</div>");
    }
    }


    %>

    </div>


    <!--商品浏览记录-->
    <div
    style=" 1210px; margin: 0 auto; padding: 0 9px; border: 1px solid #ddd; border-top: 2px solid #999; height: 246px;">

    <h4 style=" 50%; float: left; font: 14px/30px 微软雅黑">浏览记录</h4>
    <div style=" 50%; float: right; text-align: right;">
    <a href="">more</a>
    </div>
    <div style="clear: both;"></div>

    <div style="overflow: hidden;">

    <ul style="list-style: none;">
    <li
    style=" 150px; height: 216; float: left; margin: 0 8px 0 0; padding: 0 18px 15px; text-align: center;"><img
    src="products/1/cs10001.jpg" width="130px" height="130px" /></li>
    </ul>

    </div>
    </div>


    <!-- 引入footer.jsp -->
    <jsp:include page="/footer.jsp"></jsp:include>

    </body>

    </html>

    对应的servlet 如下

    package cn.lijun.Demo

    import java.io.IOException;
    import java.sql.SQLException;
    import java.util.List;

    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;

    import org.apache.commons.dbutils.QueryRunner;
    import org.apache.commons.dbutils.handlers.BeanListHandler;

    import cn.itcast.domain.Product;
    import cn.itcast.utils.DataSourceUtils;

    public class ProductListServlet extends HttpServlet {

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {

    //准备对应的所有商品的数据 ---- List<Product>
    QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
    String sql = "select * from product";
    List<Product> productList = null;
    try {
    productList = runner.query(sql, new BeanListHandler<Product>(Product.class));
    } catch (SQLException e) {
    e.printStackTrace();
    }

    //商品的集合准备好
    //将数据存到request域 转发给product_list.js进行显示
    request.setAttribute("productList", productList);
    request.getRequestDispatcher("/product_list.jsp").forward(request, response);

    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    doGet(request, response);
    }
    }

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  • 原文地址:https://www.cnblogs.com/lijun6/p/10492913.html
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