This article describes the usage of regular expressions in JSP. Share it for your reference, as follows:
<%@ page language="java" import=".*,," pageEncoding="UTF-8"%>
<%
String path = ();
String basePath = ()+"://"+()+":"+()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My 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="">
-->
</head>
<body>
<%
String data="assd";
("data", data);
%>
<!-- Regular expressions，for RequestThe data transmitted can be displayed directly as follows
Equivalent to：("data");
This is the general way
-->
${data }
<br/>
<%
Person p=new Person();
("name");
("person", p);
%>
<!-- reflectionnameAttribute to get this value output
Data passedJAVABeanThe following are sent from：
-->
${}
<br/>
<%
Person p2=new Person();
Adddress add=new Adddress();
("NewYork");
(add);
("p2", p2);
%>
<!-- The following is to define aPersonclass and oneAdddressClass of
PersonPrivate attributes：private Adddress address;
To obtain his address, you can complete it in the following way
The data is complexbeanThe following are brought in：
-->
${}
<br/>
<%
ArrayList list=new ArrayList();
(new Person("wy"));
(new Person("wyy"));
(new Person("wyyy"));
("list", list);
%>
<!-- How to get data from the collection？ -->
${list[1].name }
<br/>
<%
Map map=new HashMap();
("1", new Person("aaaa"));
("b", new Person("bbbb"));
("c", new Person("cccc"));
("d", new Person("dddd"));
("map", map);
%>
<!--
MapHow to get data from the collection？
mapWhen the collection of data is storedidDo not use numbers generally:Will appear500mistake
But if you use numbers, you can get it in the second
.If you can't get the number out, use brackets[]
-->
${}
${map['1'].name }
<br/>
<!-- Get the current onewebProject name -->
${}
<a href="${}/" >point</a>
</body>
</html>
PS: Here are two very convenient regular expression tools for your reference:
JavaScript regular expression online testing tool:
http://tools./regex/javascript
Regular expression online generation tool:
http://tools./regex/create_reg
I hope this article will be helpful to everyone's JSP programming.