布局页中的特殊情况(比如说只有某页有的banner)

仅作代码记录之用

/WEB-INF/tags/section.tag

1 <%@ tag language="java" import="java.util.*,java.io.StringWriter" pageEncoding="UTF-8"%>
2 <%@ attribute name="name" type="java.lang.String" required="true" %>
3 <%-- <%
4     StringWriter writer = new StringWriter();
5     getJspBody().invoke(writer);    // 渲染标签体
6     String html = writer.toString();
7     request.setAttribute(name, html);
8 %> --%>

layout.jsp

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Document</title>
 6 </head>
 7 <body>
 8     ${section_welcomeImage }
 9 </body>
10 </html>

test.jsp

1 <my:section name="section_welcomeImage">
2 2 <div id="welcomeImage">
3 3     <img width="100%" height="150" src="<c:url value="/images/banner.jpg" />" alt="welcome">
4 4 </div>
5 5 </my:section>