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JSP的包含指令实战
阅读量:180 次
发布时间:2019-02-28

本文共 635 字,大约阅读时间需要 2 分钟。

JSP 包含指令实战指南

一、静态包含

静态包含采用 <%@include file="要包含的文件"%> 格式,特点是包含操作先于页面编译。这种方式适用于静态页面资源的加载,页面开发完成后即可完成资源整合。

二、动态包含

动态包含采用 <jsp:include page="要包含的文件"></jsp:include> 格式,包含操作会在页面编译后进行。这种方式适用于动态资源加载,支持参数传递和条件判断。

三、动态包含的实战应用

1. testInclude.jsp 代码

<%@ page pageEncoding="UTF-8" contentType="text/html" %>JSP 包含指令的使用
<% String msg = "WORLD" ; %>

2. include_param.jsp

<%@ page pageEncoding="UTF-8" contentType="text/html" %>JSP 包含指令

我是有参数的包含

<% request.getParameter("var1")%>
<% request.getParameter("var2")%>

3. 运行结果

通过运行 testInclude.jsp,页面会分别显示以下内容:

  • "HELLO"
  • "WORLD"

这种方式可以有效地实现页面资源的动态加载和参数传递,适用于灵活的页面组合需求。

转载地址:http://yzwn.baihongyu.com/

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