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<div class="subTitle">jakarta.servlet</div>
<h2 title="Interface RequestDispatcher" class="title">Interface RequestDispatcher</h2>
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<pre>public interface <span class="typeNameLabel">RequestDispatcher</span></pre>
<div class="block">Defines an object that receives requests from the client and sends them to any resource (such as a servlet, HTML
file, or JSP file) on the server. The servlet container creates the <code>RequestDispatcher</code> object, which is
used as a wrapper around a server resource located at a particular path or given by a particular name.
<p>
This interface is intended to wrap servlets, but a servlet container can create <code>RequestDispatcher</code>
objects to wrap any type of resource.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../jakarta/servlet/ServletContext.html#getRequestDispatcher-java.lang.String-"><code>ServletContext.getRequestDispatcher(java.lang.String)</code></a>,
<a href="../../jakarta/servlet/ServletContext.html#getNamedDispatcher-java.lang.String-"><code>ServletContext.getNamedDispatcher(java.lang.String)</code></a>,
<a href="../../jakarta/servlet/ServletRequest.html#getRequestDispatcher-java.lang.String-"><code>ServletRequest.getRequestDispatcher(java.lang.String)</code></a></dd>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#ERROR_EXCEPTION">ERROR_EXCEPTION</a></span></code>
<div class="block">The name of the request attribute under which the exception object is propagated during an error dispatch</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#ERROR_EXCEPTION_TYPE">ERROR_EXCEPTION_TYPE</a></span></code>
<div class="block">The name of the request attribute under which the type of the exception object is propagated during an error dispatch</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#ERROR_MESSAGE">ERROR_MESSAGE</a></span></code>
<div class="block">The name of the request attribute under which the exception message is propagated during an error dispatch</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#ERROR_REQUEST_URI">ERROR_REQUEST_URI</a></span></code>
<div class="block">The name of the request attribute under which the request URI whose processing caused the error is propagated during
an error dispatch</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#ERROR_SERVLET_NAME">ERROR_SERVLET_NAME</a></span></code>
<div class="block">The name of the request attribute under which the name of the servlet in which the error occurred is propagated
during an error dispatch</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#ERROR_STATUS_CODE">ERROR_STATUS_CODE</a></span></code>
<div class="block">The name of the request attribute under which the response status is propagated during an error dispatch</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#FORWARD_CONTEXT_PATH">FORWARD_CONTEXT_PATH</a></span></code>
<div class="block">The name of the request attribute under which the original context path is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#FORWARD_MAPPING">FORWARD_MAPPING</a></span></code>
<div class="block">The name of the request attribute under which the original <a href="../../jakarta/servlet/http/HttpServletMapping.html" title="interface in jakarta.servlet.http"><code>HttpServletMapping</code></a> is made
available to the target of a <a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#FORWARD_PATH_INFO">FORWARD_PATH_INFO</a></span></code>
<div class="block">The name of the request attribute under which the original path info is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#FORWARD_QUERY_STRING">FORWARD_QUERY_STRING</a></span></code>
<div class="block">The name of the request attribute under which the original query string is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#FORWARD_REQUEST_URI">FORWARD_REQUEST_URI</a></span></code>
<div class="block">The name of the request attribute under which the original request URI is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#FORWARD_SERVLET_PATH">FORWARD_SERVLET_PATH</a></span></code>
<div class="block">The name of the request attribute under which the original servlet path is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#INCLUDE_CONTEXT_PATH">INCLUDE_CONTEXT_PATH</a></span></code>
<div class="block">The name of the request attribute under which the context path of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#INCLUDE_MAPPING">INCLUDE_MAPPING</a></span></code>
<div class="block">The name of the request attribute under which the <a href="../../jakarta/servlet/http/HttpServletMapping.html" title="interface in jakarta.servlet.http"><code>HttpServletMapping</code></a> of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#INCLUDE_PATH_INFO">INCLUDE_PATH_INFO</a></span></code>
<div class="block">The name of the request attribute under which the path info of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#INCLUDE_QUERY_STRING">INCLUDE_QUERY_STRING</a></span></code>
<div class="block">The name of the request attribute under which the query string of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#INCLUDE_REQUEST_URI">INCLUDE_REQUEST_URI</a></span></code>
<div class="block">The name of the request attribute under which the request URI of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#INCLUDE_SERVLET_PATH">INCLUDE_SERVLET_PATH</a></span></code>
<div class="block">The name of the request attribute under which the servlet path of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
</td>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-">forward</a></span>(<a href="../../jakarta/servlet/ServletRequest.html" title="interface in jakarta.servlet">ServletRequest</a>&nbsp;request,
<a href="../../jakarta/servlet/ServletResponse.html" title="interface in jakarta.servlet">ServletResponse</a>&nbsp;response)</code>
<div class="block">Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-">include</a></span>(<a href="../../jakarta/servlet/ServletRequest.html" title="interface in jakarta.servlet">ServletRequest</a>&nbsp;request,
<a href="../../jakarta/servlet/ServletResponse.html" title="interface in jakarta.servlet">ServletResponse</a>&nbsp;response)</code>
<div class="block">Includes the content of a resource (servlet, JSP page, HTML file) in the response.</div>
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<h4>FORWARD_REQUEST_URI</h4>
<pre>static final&nbsp;java.lang.String FORWARD_REQUEST_URI</pre>
<div class="block">The name of the request attribute under which the original request URI is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.FORWARD_REQUEST_URI">Constant Field Values</a></dd>
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<pre>static final&nbsp;java.lang.String FORWARD_CONTEXT_PATH</pre>
<div class="block">The name of the request attribute under which the original context path is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.FORWARD_CONTEXT_PATH">Constant Field Values</a></dd>
</dl>
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<h4>FORWARD_MAPPING</h4>
<pre>static final&nbsp;java.lang.String FORWARD_MAPPING</pre>
<div class="block">The name of the request attribute under which the original <a href="../../jakarta/servlet/http/HttpServletMapping.html" title="interface in jakarta.servlet.http"><code>HttpServletMapping</code></a> is made
available to the target of a <a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>4.0</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.FORWARD_MAPPING">Constant Field Values</a></dd>
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<h4>FORWARD_PATH_INFO</h4>
<pre>static final&nbsp;java.lang.String FORWARD_PATH_INFO</pre>
<div class="block">The name of the request attribute under which the original path info is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.FORWARD_PATH_INFO">Constant Field Values</a></dd>
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<pre>static final&nbsp;java.lang.String FORWARD_SERVLET_PATH</pre>
<div class="block">The name of the request attribute under which the original servlet path is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.FORWARD_SERVLET_PATH">Constant Field Values</a></dd>
</dl>
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<pre>static final&nbsp;java.lang.String FORWARD_QUERY_STRING</pre>
<div class="block">The name of the request attribute under which the original query string is made available to the target of a
<a href="../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>forward</code></a></div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.FORWARD_QUERY_STRING">Constant Field Values</a></dd>
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<pre>static final&nbsp;java.lang.String INCLUDE_REQUEST_URI</pre>
<div class="block">The name of the request attribute under which the request URI of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.INCLUDE_REQUEST_URI">Constant Field Values</a></dd>
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<pre>static final&nbsp;java.lang.String INCLUDE_CONTEXT_PATH</pre>
<div class="block">The name of the request attribute under which the context path of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.INCLUDE_CONTEXT_PATH">Constant Field Values</a></dd>
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<pre>static final&nbsp;java.lang.String INCLUDE_PATH_INFO</pre>
<div class="block">The name of the request attribute under which the path info of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.INCLUDE_PATH_INFO">Constant Field Values</a></dd>
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<pre>static final&nbsp;java.lang.String INCLUDE_MAPPING</pre>
<div class="block">The name of the request attribute under which the <a href="../../jakarta/servlet/http/HttpServletMapping.html" title="interface in jakarta.servlet.http"><code>HttpServletMapping</code></a> of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.INCLUDE_MAPPING">Constant Field Values</a></dd>
</dl>
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<pre>static final&nbsp;java.lang.String INCLUDE_SERVLET_PATH</pre>
<div class="block">The name of the request attribute under which the servlet path of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.INCLUDE_SERVLET_PATH">Constant Field Values</a></dd>
</dl>
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<pre>static final&nbsp;java.lang.String INCLUDE_QUERY_STRING</pre>
<div class="block">The name of the request attribute under which the query string of the target of an
<a href="../../jakarta/servlet/RequestDispatcher.html#include-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>include</code></a> is stored</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.INCLUDE_QUERY_STRING">Constant Field Values</a></dd>
</dl>
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<h4>ERROR_EXCEPTION</h4>
<pre>static final&nbsp;java.lang.String ERROR_EXCEPTION</pre>
<div class="block">The name of the request attribute under which the exception object is propagated during an error dispatch</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.ERROR_EXCEPTION">Constant Field Values</a></dd>
</dl>
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<h4>ERROR_EXCEPTION_TYPE</h4>
<pre>static final&nbsp;java.lang.String ERROR_EXCEPTION_TYPE</pre>
<div class="block">The name of the request attribute under which the type of the exception object is propagated during an error dispatch</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.ERROR_EXCEPTION_TYPE">Constant Field Values</a></dd>
</dl>
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<h4>ERROR_MESSAGE</h4>
<pre>static final&nbsp;java.lang.String ERROR_MESSAGE</pre>
<div class="block">The name of the request attribute under which the exception message is propagated during an error dispatch</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.ERROR_MESSAGE">Constant Field Values</a></dd>
</dl>
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<h4>ERROR_REQUEST_URI</h4>
<pre>static final&nbsp;java.lang.String ERROR_REQUEST_URI</pre>
<div class="block">The name of the request attribute under which the request URI whose processing caused the error is propagated during
an error dispatch</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.ERROR_REQUEST_URI">Constant Field Values</a></dd>
</dl>
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<h4>ERROR_SERVLET_NAME</h4>
<pre>static final&nbsp;java.lang.String ERROR_SERVLET_NAME</pre>
<div class="block">The name of the request attribute under which the name of the servlet in which the error occurred is propagated
during an error dispatch</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.ERROR_SERVLET_NAME">Constant Field Values</a></dd>
</dl>
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<pre>static final&nbsp;java.lang.String ERROR_STATUS_CODE</pre>
<div class="block">The name of the request attribute under which the response status is propagated during an error dispatch</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../constant-values.html#jakarta.servlet.RequestDispatcher.ERROR_STATUS_CODE">Constant Field Values</a></dd>
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<h4>forward</h4>
<pre>void&nbsp;forward(<a href="../../jakarta/servlet/ServletRequest.html" title="interface in jakarta.servlet">ServletRequest</a>&nbsp;request,
<a href="../../jakarta/servlet/ServletResponse.html" title="interface in jakarta.servlet">ServletResponse</a>&nbsp;response)
throws <a href="../../jakarta/servlet/ServletException.html" title="class in jakarta.servlet">ServletException</a>,
java.io.IOException</pre>
<div class="block">Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. This method
allows one servlet to do preliminary processing of a request and another resource to generate the response.
<p>
For a <code>RequestDispatcher</code> obtained via <code>getRequestDispatcher()</code>, the
<code>ServletRequest</code> object has its path elements and parameters adjusted to match the path of the target
resource.
<p>
<code>forward</code> should be called before the response has been committed to the client (before response body
output has been flushed). If the response already has been committed, this method throws an
<code>IllegalStateException</code>. Uncommitted output in the response buffer is automatically cleared before the
forward.
<p>
The request and response parameters must be either the same objects as were passed to the calling servlet's service
method or be subclasses of the <a href="../../jakarta/servlet/ServletRequestWrapper.html" title="class in jakarta.servlet"><code>ServletRequestWrapper</code></a> or <a href="../../jakarta/servlet/ServletResponseWrapper.html" title="class in jakarta.servlet"><code>ServletResponseWrapper</code></a> classes that wrap
them.
<p>
This method sets the dispatcher type of the given request to <code>DispatcherType.FORWARD</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>request</code> - a <a href="../../jakarta/servlet/ServletRequest.html" title="interface in jakarta.servlet"><code>ServletRequest</code></a> object that represents the request the client makes of the servlet</dd>
<dd><code>response</code> - a <a href="../../jakarta/servlet/ServletResponse.html" title="interface in jakarta.servlet"><code>ServletResponse</code></a> object that represents the response the servlet returns to the client</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../jakarta/servlet/ServletException.html" title="class in jakarta.servlet">ServletException</a></code> - if the target resource throws this exception</dd>
<dd><code>java.io.IOException</code> - if the target resource throws this exception</dd>
<dd><code>java.lang.IllegalStateException</code> - if the response was already committed</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../jakarta/servlet/ServletRequest.html#getDispatcherType--"><code>ServletRequest.getDispatcherType()</code></a></dd>
</dl>
</li>
</ul>
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<h4>include</h4>
<pre>void&nbsp;include(<a href="../../jakarta/servlet/ServletRequest.html" title="interface in jakarta.servlet">ServletRequest</a>&nbsp;request,
<a href="../../jakarta/servlet/ServletResponse.html" title="interface in jakarta.servlet">ServletResponse</a>&nbsp;response)
throws <a href="../../jakarta/servlet/ServletException.html" title="class in jakarta.servlet">ServletException</a>,
java.io.IOException</pre>
<div class="block">Includes the content of a resource (servlet, JSP page, HTML file) in the response. In essence, this method enables
programmatic server-side includes.
<p>
The <a href="../../jakarta/servlet/ServletResponse.html" title="interface in jakarta.servlet"><code>ServletResponse</code></a> object has its path elements and parameters remain unchanged from the caller's. The
included servlet cannot change the response status code or set headers; any attempt to make a change is ignored.
<p>
The request and response parameters must be either the same objects as were passed to the calling servlet's service
method or be subclasses of the <a href="../../jakarta/servlet/ServletRequestWrapper.html" title="class in jakarta.servlet"><code>ServletRequestWrapper</code></a> or <a href="../../jakarta/servlet/ServletResponseWrapper.html" title="class in jakarta.servlet"><code>ServletResponseWrapper</code></a> classes that wrap
them.
<p>
This method sets the dispatcher type of the given request to <code>DispatcherType.INCLUDE</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>request</code> - a <a href="../../jakarta/servlet/ServletRequest.html" title="interface in jakarta.servlet"><code>ServletRequest</code></a> object that contains the client's request</dd>
<dd><code>response</code> - a <a href="../../jakarta/servlet/ServletResponse.html" title="interface in jakarta.servlet"><code>ServletResponse</code></a> object that contains the servlet's response</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../jakarta/servlet/ServletException.html" title="class in jakarta.servlet">ServletException</a></code> - if the included resource throws this exception</dd>
<dd><code>java.io.IOException</code> - if the included resource throws this exception</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../jakarta/servlet/ServletRequest.html#getDispatcherType--"><code>ServletRequest.getDispatcherType()</code></a></dd>
</dl>
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