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<h2 title="Interface FilterChain" class="title">Interface FilterChain</h2>
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<pre>public interface <span class="typeNameLabel">FilterChain</span></pre>
<div class="block">A FilterChain is an object provided by the servlet container to the developer
giving a view into the invocation chain of a filtered request for a resource.
Filters use the FilterChain to invoke the next filter in the chain, or if the
calling filter is the last filter in the chain, to invoke the resource at the
end of the chain.</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>Servlet 2.3</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../javax/servlet/Filter.html" title="interface in javax.servlet"><code>Filter</code></a></dd>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../javax/servlet/FilterChain.html#doFilter-javax.servlet.ServletRequest-javax.servlet.ServletResponse-">doFilter</a></span>​(<a href="../../javax/servlet/ServletRequest.html" title="interface in javax.servlet">ServletRequest</a> request,
<a href="../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</a> response)</code></th>
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<div class="block">Causes the next filter in the chain to be invoked, or if the calling
filter is the last filter in the chain, causes the resource at the end of
the chain to be invoked.</div>
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<h4>doFilter</h4>
<pre>void doFilter​(<a href="../../javax/servlet/ServletRequest.html" title="interface in javax.servlet">ServletRequest</a> request,
<a href="../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</a> response)
throws java.io.IOException,
<a href="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</a></pre>
<div class="block">Causes the next filter in the chain to be invoked, or if the calling
filter is the last filter in the chain, causes the resource at the end of
the chain to be invoked.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>request</code> - the request to pass along the chain.</dd>
<dd><code>response</code> - the response to pass along the chain.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - if an I/O error occurs during the processing of the
request</dd>
<dd><code><a href="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</a></code> - if the processing fails for any other reason</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.3</dd>
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