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<html><head><title></title></head><body bgcolor=#ffffff> <a href="tags.html">[Top]</a> <a href="syntaxref.fm5.html">[Prev]</a> <a href="syntaxref.fm7.html">[Next]</a> <a href="Copyright.fm.html">[Bottom]</a><hr><br> <a name="8772"> </a><h2 align="center"> Include Directive</h2><p><a name="8777"> </a>Includes a file of text or code in the JSP source file.</p><a name="8778"> </a><h4> JSP Syntax</h4><blockquote><pre><code><%@ include file="</code><em>relativeURL</em><code>" %></code></pre></blockquote><a name="16745"> </a><h4> Examples</h4><blockquote><pre><b><i>include.jsp:</i></b><html><head><title>An Include Test</title></head><body bgcolor="white"><font color="blue">The current date and time are<%@ include file="date.jsp" %></font></body></html><p><b><i>date.jsp:</i></b><%@ page import="java.util.*" %><%= (new java.util.Date() ).toLocaleString() %>Displays in the page:The current date and time areAug 30, 1999 2:38:40</pre></blockquote><a name="16747"> </a><h4> Description</h4><p><a name="10550"> </a>The <code>include</code> directive inserts a file of text or code in a JSP file at translation time, when the JSP file is compiled. The include process is <strong>static</strong>.<strong> </strong>A static include means that the text of the included file is added to the JSP file. The included file can be a JSP file, HTML file, or text file. If the included file is a JSP file, its JSP tags are parsed and their results included (along with any other text) in the JSP file. </p><p><a name="16735"> </a>You can only use <code>include</code> to include static files. This means that the parsed result of the included file is added to the JSP file where the <code>include</code> directive is placed. Once the included file is parsed and included, processing resumes with the next line of the calling JSP file.</p><p><a name="16847"> </a>The included file can be an HTML file, a JSP file, a text file, or a code file written in the Java programming language. Be careful, though, that the included file does not contain <code><html></code>, <code></html></code>, <code><body></code>, or <code></body></code> tags. Because the entire content of the included file is added at that location in the JSP file, these tags would conflict with similar tags in the JSP file.</p><p><a name="10671"> </a>Some of the behaviors of the <code>include</code> directive depend on the JSP engine, for example:</p><ul><a name="16820"> </a><li>The included file may be open and available to all requests, or it may have security restrictions.<a name="16822"> </a><li>The JSP page may be recompiled if the included file changes.</ul><a name="10538"> </a><h4> Attributes</h4><ul><a name="16836"> </a><li><code>file="</code><em>relativeURL</em><code>"</code><p><a name="16113"> </a>The pathname to the included file, which can contain any text or code that is valid in a JSP file. The value of <code>file</code> is always a relative URL. Simply put, a relative URL is just the path segment of an URL, without the protocol, port, or domain:</p><p><a name="10541"> </a><code>"error.jsp""/templates/onlinestore.html""/beans/calendar.jsp"</code></p><p><a name="10584"> </a>If the relative URL starts with /, the path is relative to the JSP application's context, which is a <code>javax.servlet.ServletContext</code> object that is in turn stored in the <code>application</code> object. If the relative URL starts with a directory or file name, the path is relative to the JSP file.</p></ul><a name="10636"> </a><h4> Tip</h4><ul><a name="10637"> </a><li>If you are including a text file and do not want the text to be displayed in the JSP page, place comment tags around the text in the text file.</ul><a name="8975"> </a><h4> See Also</h4><ul><a name="8979"> </a><li><code><a href="syntaxref.fm11.html#8828"><jsp:include></a></code><a name="8999"> </a><li><code><a href="syntaxref.fm9.html#15694"><jsp:forward></a></code></ul><hr><br> <a href="tags.html">[Top]</a> <a href="syntaxref.fm5.html">[Prev]</a> <a href="syntaxref.fm7.html">[Next]</a> <a href="Copyright.fm.html">[Bottom]</a><hr><br><i>Copyright © 1999, Sun Microsystems, Inc. All rightsreserved.</i></body></html>⌨️ 快捷键说明
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