%@ page language="java" import="java.util.*,cn.com.Person,cn.com.Adddress" pageEncoding="UTF-8"%>
%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
html>
head>
base href="%=basePath%>">
title>My JSP 'El.jsp' starting page/title>
meta http-equiv="pragma" content="no-cache">
meta http-equiv="cache-control" content="no-cache">
meta http-equiv="expires" content="0">
meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
meta http-equiv="description" content="This is my page">
!--
link rel="stylesheet" type="text/css" href="styles.css">
-->
/head>
body>
%
String data="assd";
request.setAttribute("data", data);
%>
!-- 正則表達(dá)式,對于 Request傳過來的數(shù)據(jù)可以直接如下顯示
相當(dāng)于:pageContext.findAttribute("data");
這是一般的方式
-->
${data }
br/>
%
Person p=new Person();
p.setName("name");
request.setAttribute("person", p);
%>
!-- 反射name屬性獲取這個值輸出
數(shù)據(jù)通過JAVABean里傳過來的如下:
-->
${person.name}
br/>
%
Person p2=new Person();
Adddress add=new Adddress();
add.setCity("NewYork");
p2.setAddress(add);
request.setAttribute("p2", p2);
%>
!-- 下面的是定義一個Person的類和一個Adddress的類
Person中私有屬性:private Adddress address;
要獲取他的地址可以如下的方式來完成
數(shù)據(jù)復(fù)雜的bean里面帶過來的如下:
-->
${p2.address.city}
br/>
%
ArrayList list=new ArrayList();
list.add(new Person("wy"));
list.add(new Person("wyy"));
list.add(new Person("wyyy"));
request.setAttribute("list", list);
%>
!-- 集合帶過來的怎么獲取數(shù)據(jù)呢? -->
${list[1].name }
br/>
%
Map map=new HashMap();
map.put("1", new Person("aaaa"));
map.put("b", new Person("bbbb"));
map.put("c", new Person("cccc"));
map.put("d", new Person("dddd"));
request.setAttribute("map", map);
%>
!--
Map集合帶過來的怎么獲取數(shù)據(jù)呢?
map集合的數(shù)據(jù)存放的時候id一般不要用數(shù)字:會出現(xiàn)500錯誤
但是用數(shù)字的話獲取方式如第二條
.號取不出來就用中括號[]
-->
${map.b.name}
${map['1'].name }
br/>
!-- 獲取當(dāng)前的web項目名 -->
${pageContext.request.contextPath}
a href="${pageContext.request.contextPath}/demo1.jsp" >點/a>
/body>
/html>