session的取值与传值

服务器设置session后,前台获取代码的方法有3种:《session的取值与传值》

第一种是直接用el表达式,

第二种是用JSP表达式。

第三种是网上说的,用jquerySession取值。但是测试中无法取到,我的判断是,jquery无法直接通过服务器获取session,需要服务器先将session传到客户端前台,然后jquerySession才能取值。

——————————————————————————————————————————————————————————————-

至于在客户端前台中 直接保存session是不允许的,需要通过服务器操作。

——————————————————————————————————————————————————————————————-

controller中代码

	@RequestMapping(value = "/demo")
    public String Demo(HttpSession session){
		session.setAttribute("adminAccount","username=admin;password=123456");
		System.out.println("adminAccount: " + session.getAttribute("adminAccount"));
		System.out.println("test1: " + session.getAttribute("test1"));
		System.out.println("test2: " + session.getAttribute("test2"));
		System.out.println("test3: " + session.getAttribute("test3"));
        return "demo";
    }

前台代码

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page isELIgnored="false" %> 
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path;
%>
<% Object sessionValues=session.getAttribute("adminAccount"); %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html lang="zh-CN">
<head>
	<title>登陆</title>
	<link href="<%=basePath%>/resources/css/bootstrap.min.css" rel="stylesheet">
	<link href="<%=basePath%>/resources/css/bootstrap-theme.min.css" rel="stylesheet">
	<%-- <link href="<%=basePath%>/resources/css/login.css" rel="stylesheet"> --%>
	<script src="<%=basePath%>/resources/js/jquery-1.11.3.min.js"></script>
	<script src="<%=basePath%>/resources/js/bootstrap.min.js"></script>
	<script src="<%=basePath%>/resources/js/jquery.cookie.js"></script> 
	<script src="<%=basePath%>/resources/js/jquerySession.js"></script> 
	<script>
	$(document).ready(function(){
		$.session.set("test1","testcontent");
		var session = $.session.get('adminAccount');
		var session2 = "${adminAccount}";
		var test1 = $.session.get('test1');
		<% session.setAttribute("test2", "this is test2");
		%>
		
		$("button:eq(0)").click(function(){
			alert(session);
			alert(session2);
			alert(test1);
			<% session.setAttribute("test3", "this is test3");
			%>
			$("ol").append("<li>show session by el:adminAccount = ${adminAccount}</li>")
			$("ol").append("<li>show session by el:test1 = ${test1}</li>")
			$("ol").append("<li>show session by jq:test1 = " + test1 +"</li>")
			return null;
		});
		
	});
	</script>
</head>
<body>

<button>show session</button>
<ol>
<li>show session by asp:adminAccount = <%=sessionValues %></li>
<li>show session by el:adminAccount = ${adminAccount}</li>
</ol>
</body>
</html>



    原文作者:雨降
    原文地址: https://blog.csdn.net/u011848397/article/details/52200936
    本文转自网络文章,转载此文章仅为分享知识,如有侵权,请联系博主进行删除。
点赞