首页 > Java > java教程 > 正文

您应该选择哪种 JSP 内容包含方法:指令、操作还是标记文件?

DDD
发布: 2024-11-13 11:28:02
原创
775 人浏览过

Which JSP Content Inclusion Method Should You Choose: Directive, Action, or Tag Files?

Including Content in JSP: Directive vs. Action vs. Tag Files

When templating with JSP, there are several methods to include external content:

1. JSP Include Directive

<%@ include file="foo.html" %>
登录后复制

This directive statically includes content from a file during translation time, rendering it suitable for static layout templates like headers.

2. JSP Include Action

<jsp:include page="foo.html" />
登录后复制

Unlike the directive, this action dynamically includes content at request time. It is designed for dynamic content originating from JSPs.

3. JSP Tag Files

Tag files provide an indirect method for content reuse through custom tags. They are source files containing JSP code that can be called as reusable tags. They:

  • Allow customization through attributes
  • Pass variables back to the calling page
  • Access JSP objects
  • Communicate with each other

Edit: Comparison to Includes

The example provided in your edit may seem similar to using an include. However, custom tags have additional features, including:

  • Nesting and communication via private variables

When to Use Each Method

  • Use tag files for encapsulating reusable content.
  • Use the include directive for static content that rarely changes.
  • Use the include action for dynamic content that changes often when the main page is requested.

以上是您应该选择哪种 JSP 内容包含方法:指令、操作还是标记文件?的详细内容。更多信息请关注PHP中文网其他相关文章!

来源:php.cn
本站声明
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn
热门教程
更多>
最新下载
更多>
网站特效
网站源码
网站素材
前端模板