youys
/
ant

<!DOCTYPE html>
<!--
   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       https://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-->
<html lang="en">
<head>
<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
<title>LoadProperties Task</title>
</head>

<body>


<h2 id="loadproperties">LoadProperties</h2>
<h3>Description</h3>
<p>Load a file's contents as Apache Ant properties.  This is equivalent to <code>&lt;property
file|resource=<q>...</q>/&gt;</code> except that it supports nested <code>&lt;filterchain&gt;</code>
elements.  Also if the file is missing, the build is halted with an error, rather than a warning
being printed.</p>

<p><strong>Note</strong>: the default value of this task's <var>prefixValues</var> attribute is
different from the default value of the same attribute in
the <a href="property.html"><code>&lt;property&gt;</code></a> task.</p>

<h3>Parameters</h3>
<table class="attr">
  <tr>
    <th scope="col">Attribute</th>
    <th scope="col">Description</th>
    <th scope="col">Required</th>
  </tr>
  <tr>
    <td>srcFile</td>
    <td>source file</td>
    <td rowspan="2">One of these or a nested resource</td>
  </tr>
  <tr>
    <td>resource</td>
    <td class="left">the resource name of the property file</td>
  </tr>
  <tr>
    <td>encoding</td>
    <td>encoding to use when loading the file</td>
    <td>No</td>
  </tr>
  <tr>
    <td>classpath</td>
    <td>the classpath to use when looking up a resource.</td>
    <td>No</td>
  </tr>
  <tr>
    <td>classpathref</td>
    <td>the classpath to use when looking up a resource, given
      as <a href="../using.html#references">reference</a> to a <code>&lt;path&gt;</code> defined
      elsewhere.</td>
    <td>No</td>
  </tr>
  <tr>
    <td>prefix</td>
    <td>Prefix to apply to loaded properties. <em>Since Ant 1.8.1</em></td>
    <td>No; default is <q>.</q></td>
  </tr>
  <tr>
    <td>prefixValues</td>
    <td>Whether to apply the prefix when expanding the right hand side of the properties.  <em>Since
      Ant 1.8.2</em></td>
    <td>No; default is <q>true</q></td>
  </tr>
</table>

<h3>Parameters specified as nested elements</h3>

<h4>any <a href="../Types/resources.html">resource</a> or single element
resource collection</h4>

<p><em>Since Ant 1.7</em></p>

<p>The specified resource will be used as <var>srcFile</var> or <var>resource</var>.</p>

<h4><a href="../Types/filterchain.html">FilterChain</a></h4>

<h4>classpath</h4>

<p>for use with the <var>resource</var> attribute.</p>

<h3>Examples</h3>

<p>Load contents of <samp>file.properties</samp> as Ant properties.</p>
<pre>&lt;loadproperties srcFile="file.properties"/&gt;</pre>
<p>or</p>
<pre>
&lt;loadproperties&gt;
    &lt;file file="file.properties"/&gt;
&lt;/loadproperties&gt;</pre>

<p>Read the lines that contain the string <q>import.</q> from the file <samp>file.properties</samp>
and load them as Ant properties.</p>
<pre>
&lt;loadproperties srcFile="file.properties"&gt;
    &lt;filterchain&gt;
        &lt;<a href="../Types/filterchain.html#linecontains">linecontains</a>&gt;
            &lt;contains value=&quot;import.&quot;/&gt;
        &lt;/linecontains&gt;
    &lt;/filterchain&gt;
&lt;/loadproperties&gt;</pre>

<p>Load contents of <samp>https://example.org/url.properties.gz</samp>, uncompress it on the fly and
load the contents as Ant properties.</p>
<pre>
&lt;loadproperties&gt;
    &lt;<a href="../Types/resources.html#gzipresource">gzipresource</a>&gt;
        &lt;<a href="../Types/resources.html#url">url</a> url="https://example.org/url.properties.gz"/&gt;
    &lt;/gzipresource&gt;
&lt;/loadproperties&gt;</pre>

</body>
</html>