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JSP EL表达式 param、paramValues的使用

JSP EL表达式 param、paramValues的使用：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
    pageContext.setAttribute("pca", "pageContextAttribute");
    //session.setAttribute("s", "session");
%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>008index</title>
</head>
<body>
    <form action="index018.jsp" method="post" >
        <input type="text" name = "name" value="inputName">
        <input type="text" name = "age" value="28">
        <input type="text" name = "food" value="apple">
        <input type="text" name = "food" value="orange">
        <input type="submit" value="submit" >
    </form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
    pageContext.setAttribute("pca", "pageContextAttribute");
    //session.setAttribute("s", "session");
%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>008index</title>
</head>
<body>
    <p>param.name is : ${param.name }</p>
    <p>param.age is : ${param.age }</p>
    <p>param.food is : ${param.food }</p>
    <p>paramValues.food is : ${paramValues.food }</p>
    <p>paramValues.food[0] is : ${paramValues.food[0] }</p>
    <p>paramValues.food[1] is : ${paramValues.food[1] }</p>
    <p>使用paramValues得到的就是数组，即使提交的是单个信息也会得到数组</p>
    <p>paramValues.name is : ${paramValues.name }</p>
    <p>paramValues.name[0] is : ${paramValues.name[0] }</p>
    <p>直接访问页面的header.Referer为空，其他页面提交过来的不为空</p>
    <p>header.Referer is : ${header.Referer }</p>
    <p>header["Referer"] is : ${header["Referer"] }</p>
    <p>header["Content-Type"] is : ${header["Content-Type"] }</p>
</body>
</html>

 

posted @ 2015-10-30 16:12  stono  阅读(1484)  评论(0)  编辑  收藏  举报