You can use this, which means that the Java code is written in it. The other definitions are the same as the Java code.
For example, define a string type array
<% String[] datas = new String[5]; %>
However, if you want to define a list, you need to add
Similar to the java code in the jsp page Import the referenced class
<% List list = new ArrayList(); %>
It is best not to add a generic
Case: Traversing the LIST list in JSP
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%
List<String> list = new ArrayList<String>();
list.add("简单是可靠的先决条件");
list.add("兴趣是最好的老师");
list.add("知识上的投资总能得到最好的回报");
request.setAttribute("list", list);
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>Jsp使用c:forEach遍历List集合</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">
</head>
<body>
<b>遍历List集合的全部元素：</b>
<br>
<c:forEach items="${requestScope.list}" var="keyword" varStatus="id">
${id.index} ${keyword}<br>
</c:forEach>
<br>
<b>遍历List集合中第一个元素以后的元素（不包括第一个元素）：</b>
<br>
<c:forEach items="${requestScope.list}" var="keyword" varStatus="id" begin="1">
${id.index} ${keyword}<br>
</c:forEach>
</body>
</html>The above is the detailed content of How to create a list in jsp. For more information, please follow other related articles on the PHP Chinese website!
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