%@ 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(duì)于 Request傳過(guò)來(lái)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(gè)值輸出 
  數(shù)據(jù)通過(guò)JAVABean里傳過(guò)來(lái)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(gè)Person的類(lèi)和一個(gè)Adddress的類(lèi)
  Person中私有屬性：private Adddress address;
  要獲取他的地址可以如下的方式來(lái)完成
  數(shù)據(jù)復(fù)雜的bean里面帶過(guò)來(lái)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(guò)來(lái)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(guò)來(lái)的怎么獲取數(shù)據(jù)呢？
   map集合的數(shù)據(jù)存放的時(shí)候id一般不要用數(shù)字:會(huì)出現(xiàn)500錯(cuò)誤
   但是用數(shù)字的話獲取方式如第二條
   .號(hào)取不出來(lái)就用中括號(hào)[]
 -->
 ${map.b.name}
 ${map['1'].name }
 br/>
 !-- 獲取當(dāng)前的web項(xiàng)目名 -->
 ${pageContext.request.contextPath}
  a href="${pageContext.request.contextPath}/demo1.jsp" >點(diǎn)/a>
 /body>
/html>