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ref_directive_compress.html
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<!doctype html>
<html lang="en" class="page-type-section">
<head prefix="og: http://ogp.me/ns#">
<meta charset="utf-8">
<title>compress - FreeMarker 手册</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="format-detection" content="telephone=no">
<meta property="og:site_name" content="FreeMarker 手册">
<meta property="og:title" content="compress">
<meta property="og:locale" content="en_US">
<meta property="og:url" content="http://freemarker.org/docs/ref_directive_compress.html">
<link rel="canoical" href="http://freemarker.org/docs/ref_directive_compress.html">
<link rel="icon" href="favicon.png" type="image/png">
<link rel="stylesheet" type="text/css" href="docgen-resources/docgen.min.css">
</head>
<body itemscope itemtype="https://schema.org/Code">
<meta itemprop="url" content="http://freemarker.org/docs/">
<meta itemprop="name" content="FreeMarker 手册">
<!--[if lte IE 9]>
<div style="background-color: #C00; color: #fff; padding: 12px 24px;">Please use a modern browser to view this website.</div>
<![endif]--><div class="header-top-bg"><div class="site-width header-top"><a class="logo" href="http://freemarker.org" role="banner"> <img itemprop="image" src="logo.png" alt="FreeMarker">
</a><ul class="tabs"><li><a href="http://freemarker.org/">Home</a></li><li class="current"><a href="index.html">Manual</a></li><li><a class="external" href="http://freemarker.org/docs/api/index.html">Java API</a></li></ul><ul class="secondary-tabs"><li><a class="tab icon-heart" href="http://freemarker.org/contribute.html" title="Contribute"><span>Contribute</span></a></li><li><a class="tab icon-bug" href="https://sourceforge.net/p/freemarker/bugs/new/" title="Report a Bug"><span>Report a Bug</span></a></li><li><a class="tab icon-download" href="http://freemarker.org/freemarkerdownload.html" title="Download"><span>Download</span></a></li></ul></div></div><div class="header-bottom-bg"><div class="site-width search-row"><a href="toc.html" class="navigation-header">Manual</a><div class="navigation-header"></div></div><div class="site-width breadcrumb-row"><ul class="breadcrumb" itemscope itemtype="http://schema.org/BreadcrumbList"><li class="step-0" itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"><a class="label" itemprop="item" href="toc.html"><span itemprop="name">FreeMarker 手册</span></a></li><li class="step-1" itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"><a class="label" itemprop="item" href="ref.html"><span itemprop="name">模板语言参考 </span></a></li><li class="step-2" itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"><a class="label" itemprop="item" href="ref_directives.html"><span itemprop="name">指令参考</span></a></li><li class="step-3" itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"><a class="label" itemprop="item" href="ref_directive_compress.html"><span itemprop="name">compress</span></a></li></ul><div class="bookmarks" title="Bookmarks"><span class="sr-only">Bookmarks:</span><ul class="bookmark-list"><li><a href="alphaidx.html">Alpha. index</a></li><li><a href="gloss.html">Glossary</a></li><li><a href="dgui_template_exp.html#exp_cheatsheet">Expressions</a></li><li><a href="ref_builtins_alphaidx.html">?builtins</a></li><li><a href="ref_directive_alphaidx.html">#directives</a></li><li><a href="ref_specvar.html">.spec_vars</a></li><li><a href="app_faq.html">FAQ</a></li></ul></div></div></div> <div class="main-content site-width">
<div class="content-wrapper">
<div id="table-of-contents-wrapper" class="col-left">
<script>var breadcrumb = ["FreeMarker 手册","模板语言参考 ","指令参考","compress"];</script>
<script src="toc.js"></script>
<script src="docgen-resources/main.min.js"></script>
</div>
<div class="col-right"><div class="page-content"><div class="page-title"><div class="pagers top"><a class="paging-arrow previous" href="ref_directive_attempt.html"><span>Previous</span></a><a class="paging-arrow next" href="ref_directive_escape.html"><span>Next</span></a></div><div class="title-wrapper">
<h1 class="content-header header-section1" id="ref_directive_compress" itemprop="headline">compress</h1>
</div></div><div class="page-menu">
<div class="page-menu-title">Page Contents</div>
<ul><li><a class="page-menu-link" href="#autoid_73" data-menu-target="autoid_73">概要</a></li><li><a class="page-menu-link" href="#autoid_74" data-menu-target="autoid_74">描述</a></li></ul> </div><a name="ref.directive.compress"></a>
<h2 class="content-header header-section2" id="autoid_73">概要</h2>
<pre class="metaTemplate">
<code class="inline-code"><#compress>
<em class="code-color">...</em>
</#compress></code>
</pre>
<h2 class="content-header header-section2" id="autoid_74">描述</h2>
<p>当你使用了对空白不敏感的格式(比如HTML或XML)
时压缩指令对于移除多余的 <a href="gloss.html#gloss.whiteSpace">空白</a>
是很有用的。它捕捉在指令体(也就是在开始标签和结束标签中)中生成的内容，
然后缩小所有不间断的空白序列到一个单独的空白字符。
如果被替代的序列包含换行符或是一段空间，那么被插入的字符也会是一个 <a href="gloss.html#gloss.lineBreak">换行符</a>。
开头和结尾的不间断的空白序列将会完全被移除。</p>
<div class="code-wrapper"><pre class="code-block code-template"><#assign x = " moo \n\n ">
(<#compress>
1 2 3 4 5
${moo}
test only
I said, test only
</#compress>)</pre></div>
<p>将会输出：</p>
<div class="code-wrapper"><pre class="code-block code-output">(1 2 3 4 5
moo
test only
I said, test only)</pre></div>
<div class="bottom-pagers-wrapper"><div class="pagers bottom"><a class="paging-arrow previous" href="ref_directive_attempt.html"><span>Previous</span></a><a class="paging-arrow next" href="ref_directive_escape.html"><span>Next</span></a></div></div></div></div> </div>
</div>
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<time itemprop="dateModified" datetime="2015-09-18T14:38:51Z" title="Friday, September 18, 2015 2:38:51 PM GMT">2015-09-18 14:38:51 GMT</time></span></p> <p class="copyright">
© <span itemprop="copyrightYear">1999</span>–2015
<a itemtype="http://schema.org/Organization" itemprop="copyrightHolder" href="http://freemarker.org">The FreeMarker Project</a>. All rights reserved. </p>
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