if没有else
<%@ page import="java.util.ArrayList" %><%-- Created by IntelliJ IDEA. User: 联想 Date: 2020/10/4 Time: 20:14 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <html> <head> <title>Title</title> </head> <body> <c:if test="true"> 我是真 </c:if> <% request.setAttribute("num",5); %> <c:choose> <c:when test="${num == 5}">测试</c:when> <c:otherwise>输入有误</c:otherwise> </c:choose> <c:forEach begin="0" end="10" step="2" var="i" varStatus="n"> ${i} ${n.index} ${n.count} </c:forEach> <% ArrayList arrayList = new ArrayList(); arrayList.add("aaa"); arrayList.add(1); arrayList.add(5); request.setAttribute("list",arrayList); %> <br> <c:forEach items="${list}" var="t"> ${t} </c:forEach> </body> </html>
