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<title>Apache Velocity Tools - VelocityViewTag Library</title>
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<tspan y="72.094482" x="356" id="tspan3418">Apache Velocity Project</tspan>
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visibility: hidden;
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<p class="note">This page is still unfinished. For details on configuring the VelocityViewTag, you can follow most of the instructions for the <a href="view-servlet.html">VelocityViewServlet</a> and of course on the <a href="configuration.html">configuration pages</a>. <a href="index.html#Contribution">Help finishing this is welcome!</a>
</p>
<p>This is a JSP tag that allows you to use Velocity and VelocityTools from within a JSP page or tag. There are many ways to use this tag. This simplest is to have it process an external template using the current page context. Assuming you have a template called "foo.vm" that can be found by your resource loader(s) that looks like this:</p>
<div class="codehilite"><pre><span class="x">Hello </span><span class="p">$</span><span class="x">!bodyContent World!</span>
</pre></div>
<p>This tag can process that template by doing:</p>
<div class="codehilite"><pre><span class="k">&lt;%@</span><span class="n">taglib</span> <span class="n">prefix</span><span class="o">=</span><span class="s">&quot;velocity&quot;</span> <span class="n">uri</span><span class="o">=</span><span class="s">&quot;http://velocity.apache.org/velocity-view&quot;</span> <span class="k">%&gt;</span>
<span class="nt">&lt;velocity:view</span> <span class="na">template=</span><span class="s">&quot;foo.vm&quot;</span><span class="nt">/&gt;</span>
</pre></div>
<p>VTL in the body of the tag:</p>
<div class="codehilite"><pre><span class="k">&lt;%@</span><span class="n">taglib</span> <span class="n">prefix</span><span class="o">=</span><span class="s">&quot;velocity&quot;</span> <span class="n">uri</span><span class="o">=</span><span class="s">&quot;http://velocity.apache.org/velocity-view&quot;</span> <span class="k">%&gt;</span>
<span class="nt">&lt;velocity:view&gt;</span>
#if( $date.E eq &#39;Friday&#39; )
Happy
#else
Sad
#end
<span class="nt">&lt;/velocity:view&gt;</span>
</pre></div>
<p>or combine both by first processing the body of the tag, then inserting the results of that into the context for the separate template as $bodyContent:</p>
<div class="codehilite"><pre><span class="k">&lt;%@</span><span class="n">taglib</span> <span class="n">prefix</span><span class="o">=</span><span class="s">&quot;velocity&quot;</span> <span class="n">uri</span><span class="o">=</span><span class="s">&quot;http://velocity.apache.org/velocity-view&quot;</span> <span class="k">%&gt;</span>
<span class="nt">&lt;velocity:view</span> <span class="na">template=</span><span class="s">&quot;foo.vm&quot;</span><span class="nt">&gt;</span>
#if( $date.E eq &#39;Friday&#39; )
Happy
#else
Sad
#end
<span class="nt">&lt;/velocity:view&gt;</span>
</pre></div>
<p>You can also store the results of any of the options above into a variable of any name and scope (default scope is "page"):</p>
<div class="codehilite"><pre><span class="k">&lt;%@</span><span class="n">taglib</span> <span class="n">prefix</span><span class="o">=</span><span class="s">&quot;velocity&quot;</span> <span class="n">uri</span><span class="o">=</span><span class="s">&quot;http://velocity.apache.org/velocity-view&quot;</span> <span class="k">%&gt;</span>
<span class="nt">&lt;velocity:view</span> <span class="na">var=</span><span class="s">&quot;foo&quot;</span> <span class="na">scope=</span><span class="s">&quot;request&quot;</span> <span class="na">template=</span><span class="s">&quot;foo.vm&quot;</span><span class="nt">&gt;</span>
#if( $date.E eq &#39;Friday&#39; )
Happy
#else
Sad
#end
<span class="nt">&lt;/velocity:view&gt;</span>
</pre></div>
<p>For more details, see the <a href="apidocs/org/apache/velocity/tools/view/jsp/VelocityViewTag.html">Javadoc</a> or the <a href="http://svn.apache.org/repos/asf/velocity/tools/trunk/src/main/resources/META-INF/velocity-view.tld">TLD</a>.</p></div></div>
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