javascript 如何访问 action或者controller 传给 jsp 页面的值

时间：2022-04-08 19:49:07
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>

<%@ page import="com.alibaba.fastjson.JSONObject"%>

<%

    JSONObject jo = null;

    String openid = null;

    if(request.getSession().getAttribute("openidAndAccessToken") != null){

        jo = (JSONObject)request.getSession().getAttribute("openidAndAccessToken");

        if(jo != null)

            openid = jo.getString("openid");

    }

    String accessToken = null;

    if(request.getAttribute("access_token") != null){

        accessToken = request.getAttribute("access_token");

    }

%>

<!DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title><%=openid %></title>

<script type="text/javascript">

var openid = "<%=openid %>";

var accessToken = "<%=accessToken %>";

....
</script>

</head>

<body>

<p>openid:<%=openid %></p>

<p>openid:<%=accessToken %></p>

</body>

</html>

如上述代码所示，js访问 jsp 页面的值，需要使用双引号：var openid = "<%=openid %>"

而在页面显示则不需要使用引号：<p>openid:<%=openid %></p>

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