jsp中js里怎么接收后台传来的数据值？

2024-12-25 18:31:52

推荐回答（1个）

回答1：

先将数据库的数据获取，用session将数据存起来。

HttpSession session = request.getSession();
session.setAttribute("userDetail", userDetailDao.userDetail());

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public class UserDetailAction extends HttpServlet {
private static final long serialVersionUID = 1L;
public UserDetailAction() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
UserDetailDao userDetailDao = new UserDetailDao();
HttpSession session = request.getSession();
session.setAttribute("userDetail", userDetailDao.userDetail());
response.sendRedirect("managerForUserDetail.jsp");
}

用jstl先导入两个jar包（standard.jar和jstl.jar），放在lib文件夹下并add build path

在web.xml配置（来自菜鸟）

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在jsp中引用核心标签库的语法引用核心标签库的语法

注释部分是没有使用jstl时，在jsp页面添加Java代码，

使用jstl的c:forEach是迭代一个集合中的对象，var表示变量名，items是将被循环的集合。

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<%@ page language="java" contentType="text/html; charset=GBK"
import="java.util.*,com.qingzheng.entity.User,com.qingzheng.servlet.UserDetailAction，
com.qingzheng.dao.UserDetailDao"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
Insert title here
User Infomation
UserAccount
User name
Password
Sex
Telephone Number
Operation
<%
/* ArrayList users = (ArrayList) session.getAttribute("userDetail");
for(User user:users){
int userid = user.getUserid();
String username = user.getUsername();
String password= user.getPassword();
String sex = user.getSex();
String tel = user.getTel();*/
%>
value="${user.userid}">
详情
修改
删除
<%
// }
%>

User Infomation