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<h2 title="Interface HttpServletResponse" class="title">Interface HttpServletResponse</h2>
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<dt>All Superinterfaces:</dt>
<dd><code><a href="../../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</a></code></dd>
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<dt>All Known Implementing Classes:</dt>
<dd><code><a href="../../../javax/servlet/http/HttpServletResponseWrapper.html" title="class in javax.servlet.http">HttpServletResponseWrapper</a></code></dd>
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<pre>public interface <span class="typeNameLabel">HttpServletResponse</span>
extends <a href="../../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</a></pre>
<div class="block">Extends the <a href="../../../javax/servlet/ServletResponse.html" title="interface in javax.servlet"><code>ServletResponse</code></a> interface to provide HTTP-specific
functionality in sending a response. For example, it has methods to access
HTTP headers and cookies.
<p>
The servlet container creates an <code>HttpServletResponse</code> object and
passes it as an argument to the servlet's service methods (<code>doGet</code>, <code>doPost</code>, etc).</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/ServletResponse.html" title="interface in javax.servlet"><code>ServletResponse</code></a></dd>
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<h3>Field Summary</h3>
<table class="memberSummary" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_ACCEPTED">SC_ACCEPTED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (202) indicating that a request was accepted for processing,
but was not completed.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_BAD_GATEWAY">SC_BAD_GATEWAY</a></span></code></th>
<td class="colLast">
<div class="block">Status code (502) indicating that the HTTP server received an invalid
response from a server it consulted when acting as a proxy or gateway.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_BAD_REQUEST">SC_BAD_REQUEST</a></span></code></th>
<td class="colLast">
<div class="block">Status code (400) indicating the request sent by the client was
syntactically incorrect.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_CONFLICT">SC_CONFLICT</a></span></code></th>
<td class="colLast">
<div class="block">Status code (409) indicating that the request could not be completed due
to a conflict with the current state of the resource.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_CONTINUE">SC_CONTINUE</a></span></code></th>
<td class="colLast">
<div class="block">Status code (100) indicating the client can continue.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_CREATED">SC_CREATED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (201) indicating the request succeeded and created a new
resource on the server.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_EXPECTATION_FAILED">SC_EXPECTATION_FAILED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (417) indicating that the server could not meet the
expectation given in the Expect request header.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_FORBIDDEN">SC_FORBIDDEN</a></span></code></th>
<td class="colLast">
<div class="block">Status code (403) indicating the server understood the request but
refused to fulfill it.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_FOUND">SC_FOUND</a></span></code></th>
<td class="colLast">
<div class="block">Status code (302) indicating that the resource reside temporarily under a
different URI.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_GATEWAY_TIMEOUT">SC_GATEWAY_TIMEOUT</a></span></code></th>
<td class="colLast">
<div class="block">Status code (504) indicating that the server did not receive a timely
response from the upstream server while acting as a gateway or proxy.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_GONE">SC_GONE</a></span></code></th>
<td class="colLast">
<div class="block">Status code (410) indicating that the resource is no longer available at
the server and no forwarding address is known.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_HTTP_VERSION_NOT_SUPPORTED">SC_HTTP_VERSION_NOT_SUPPORTED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (505) indicating that the server does not support or refuses
to support the HTTP protocol version that was used in the request
message.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_INTERNAL_SERVER_ERROR">SC_INTERNAL_SERVER_ERROR</a></span></code></th>
<td class="colLast">
<div class="block">Status code (500) indicating an error inside the HTTP server which
prevented it from fulfilling the request.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_LENGTH_REQUIRED">SC_LENGTH_REQUIRED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (411) indicating that the request cannot be handled without a
defined <code><em>Content-Length</em></code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_METHOD_NOT_ALLOWED">SC_METHOD_NOT_ALLOWED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (405) indicating that the method specified in the
<code><em>Request-Line</em></code> is not allowed for the resource
identified by the <code><em>Request-URI</em></code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_MOVED_PERMANENTLY">SC_MOVED_PERMANENTLY</a></span></code></th>
<td class="colLast">
<div class="block">Status code (301) indicating that the resource has permanently moved to a
new location, and that future references should use a new URI with their
requests.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_MOVED_TEMPORARILY">SC_MOVED_TEMPORARILY</a></span></code></th>
<td class="colLast">
<div class="block">Status code (302) indicating that the resource has temporarily moved to
another location, but that future references should still use the
original URI to access the resource.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_MULTIPLE_CHOICES">SC_MULTIPLE_CHOICES</a></span></code></th>
<td class="colLast">
<div class="block">Status code (300) indicating that the requested resource corresponds to
any one of a set of representations, each with its own specific location.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_NO_CONTENT">SC_NO_CONTENT</a></span></code></th>
<td class="colLast">
<div class="block">Status code (204) indicating that the request succeeded but that there
was no new information to return.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_NON_AUTHORITATIVE_INFORMATION">SC_NON_AUTHORITATIVE_INFORMATION</a></span></code></th>
<td class="colLast">
<div class="block">Status code (203) indicating that the meta information presented by the
client did not originate from the server.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_NOT_ACCEPTABLE">SC_NOT_ACCEPTABLE</a></span></code></th>
<td class="colLast">
<div class="block">Status code (406) indicating that the resource identified by the request
is only capable of generating response entities which have content
characteristics not acceptable according to the accept headers sent in
the request.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_NOT_FOUND">SC_NOT_FOUND</a></span></code></th>
<td class="colLast">
<div class="block">Status code (404) indicating that the requested resource is not
available.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_NOT_IMPLEMENTED">SC_NOT_IMPLEMENTED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (501) indicating the HTTP server does not support the
functionality needed to fulfill the request.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_NOT_MODIFIED">SC_NOT_MODIFIED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (304) indicating that a conditional GET operation found that
the resource was available and not modified.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_OK">SC_OK</a></span></code></th>
<td class="colLast">
<div class="block">Status code (200) indicating the request succeeded normally.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_PARTIAL_CONTENT">SC_PARTIAL_CONTENT</a></span></code></th>
<td class="colLast">
<div class="block">Status code (206) indicating that the server has fulfilled the partial
GET request for the resource.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_PAYMENT_REQUIRED">SC_PAYMENT_REQUIRED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (402) reserved for future use.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_PRECONDITION_FAILED">SC_PRECONDITION_FAILED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (412) indicating that the precondition given in one or more
of the request-header fields evaluated to false when it was tested on the
server.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_PROXY_AUTHENTICATION_REQUIRED">SC_PROXY_AUTHENTICATION_REQUIRED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (407) indicating that the client <em>MUST</em> first
authenticate itself with the proxy.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_REQUEST_ENTITY_TOO_LARGE">SC_REQUEST_ENTITY_TOO_LARGE</a></span></code></th>
<td class="colLast">
<div class="block">Status code (413) indicating that the server is refusing to process the
request because the request entity is larger than the server is willing
or able to process.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_REQUEST_TIMEOUT">SC_REQUEST_TIMEOUT</a></span></code></th>
<td class="colLast">
<div class="block">Status code (408) indicating that the client did not produce a request
within the time that the server was prepared to wait.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_REQUEST_URI_TOO_LONG">SC_REQUEST_URI_TOO_LONG</a></span></code></th>
<td class="colLast">
<div class="block">Status code (414) indicating that the server is refusing to service the
request because the <code><em>Request-URI</em></code> is longer than the
server is willing to interpret.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_REQUESTED_RANGE_NOT_SATISFIABLE">SC_REQUESTED_RANGE_NOT_SATISFIABLE</a></span></code></th>
<td class="colLast">
<div class="block">Status code (416) indicating that the server cannot serve the requested
byte range.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_RESET_CONTENT">SC_RESET_CONTENT</a></span></code></th>
<td class="colLast">
<div class="block">Status code (205) indicating that the agent <em>SHOULD</em> reset the
document view which caused the request to be sent.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_SEE_OTHER">SC_SEE_OTHER</a></span></code></th>
<td class="colLast">
<div class="block">Status code (303) indicating that the response to the request can be
found under a different URI.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_SERVICE_UNAVAILABLE">SC_SERVICE_UNAVAILABLE</a></span></code></th>
<td class="colLast">
<div class="block">Status code (503) indicating that the HTTP server is temporarily
overloaded, and unable to handle the request.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_SWITCHING_PROTOCOLS">SC_SWITCHING_PROTOCOLS</a></span></code></th>
<td class="colLast">
<div class="block">Status code (101) indicating the server is switching protocols according
to Upgrade header.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_TEMPORARY_REDIRECT">SC_TEMPORARY_REDIRECT</a></span></code></th>
<td class="colLast">
<div class="block">Status code (307) indicating that the requested resource resides
temporarily under a different URI.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_UNAUTHORIZED">SC_UNAUTHORIZED</a></span></code></th>
<td class="colLast">
<div class="block">Status code (401) indicating that the request requires HTTP
authentication.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_UNSUPPORTED_MEDIA_TYPE">SC_UNSUPPORTED_MEDIA_TYPE</a></span></code></th>
<td class="colLast">
<div class="block">Status code (415) indicating that the server is refusing to service the
request because the entity of the request is in a format not supported by
the requested resource for the requested method.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#SC_USE_PROXY">SC_USE_PROXY</a></span></code></th>
<td class="colLast">
<div class="block">Status code (305) indicating that the requested resource <em>MUST</em> be
accessed through the proxy given by the <code><em>Location</em></code>
field.</div>
</td>
</tr>
</table>
</li>
</ul>
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<li class="blockList"><a name="method.summary">
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</a>
<h3>Method Summary</h3>
<table class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd"> </span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#addCookie-javax.servlet.http.Cookie-">addCookie</a></span>​(<a href="../../../javax/servlet/http/Cookie.html" title="class in javax.servlet.http">Cookie</a> cookie)</code></th>
<td class="colLast">
<div class="block">Adds the specified cookie to the response.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#addDateHeader-java.lang.String-long-">addDateHeader</a></span>​(java.lang.String name,
long date)</code></th>
<td class="colLast">
<div class="block">Adds a response header with the given name and date-value.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#addHeader-java.lang.String-java.lang.String-">addHeader</a></span>​(java.lang.String name,
java.lang.String value)</code></th>
<td class="colLast">
<div class="block">Adds a response header with the given name and value.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#addIntHeader-java.lang.String-int-">addIntHeader</a></span>​(java.lang.String name,
int value)</code></th>
<td class="colLast">
<div class="block">Adds a response header with the given name and integer value.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#containsHeader-java.lang.String-">containsHeader</a></span>​(java.lang.String name)</code></th>
<td class="colLast">
<div class="block">Returns a boolean indicating whether the named response header has
already been set.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#encodeRedirectUrl-java.lang.String-">encodeRedirectUrl</a></span>​(java.lang.String url)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">As of version 2.1, use encodeRedirectURL(String url) instead</div>
</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#encodeRedirectURL-java.lang.String-">encodeRedirectURL</a></span>​(java.lang.String url)</code></th>
<td class="colLast">
<div class="block">Encodes the specified URL for use in the <code>sendRedirect</code> method
or, if encoding is not needed, returns the URL unchanged.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#encodeUrl-java.lang.String-">encodeUrl</a></span>​(java.lang.String url)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">As of version 2.1, use encodeURL(String url) instead</div>
</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#encodeURL-java.lang.String-">encodeURL</a></span>​(java.lang.String url)</code></th>
<td class="colLast">
<div class="block">Encodes the specified URL by including the session ID in it, or, if
encoding is not needed, returns the URL unchanged.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#getHeader-java.lang.String-">getHeader</a></span>​(java.lang.String name)</code></th>
<td class="colLast">
<div class="block">Return the value for the specified header, or <code>null</code> if this
header has not been set.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>java.util.Collection<java.lang.String></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#getHeaderNames--">getHeaderNames</a></span>()</code></th>
<td class="colLast">
<div class="block">Get the header names set for this HTTP response.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>java.util.Collection<java.lang.String></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#getHeaders-java.lang.String-">getHeaders</a></span>​(java.lang.String name)</code></th>
<td class="colLast">
<div class="block">Return a Collection of all the header values associated with the
specified header name.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#getStatus--">getStatus</a></span>()</code></th>
<td class="colLast">
<div class="block">Get the HTTP status code for this Response.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#sendError-int-">sendError</a></span>​(int sc)</code></th>
<td class="colLast">
<div class="block">Sends an error response to the client using the specified status code and
clears the buffer.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#sendError-int-java.lang.String-">sendError</a></span>​(int sc,
java.lang.String msg)</code></th>
<td class="colLast">
<div class="block">Sends an error response to the client using the specified status code and
clears the output buffer.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#sendRedirect-java.lang.String-">sendRedirect</a></span>​(java.lang.String location)</code></th>
<td class="colLast">
<div class="block">Sends a temporary redirect response to the client using the specified
redirect location URL.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#setDateHeader-java.lang.String-long-">setDateHeader</a></span>​(java.lang.String name,
long date)</code></th>
<td class="colLast">
<div class="block">Sets a response header with the given name and date-value.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#setHeader-java.lang.String-java.lang.String-">setHeader</a></span>​(java.lang.String name,
java.lang.String value)</code></th>
<td class="colLast">
<div class="block">Sets a response header with the given name and value.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#setIntHeader-java.lang.String-int-">setIntHeader</a></span>​(java.lang.String name,
int value)</code></th>
<td class="colLast">
<div class="block">Sets a response header with the given name and integer value.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#setStatus-int-">setStatus</a></span>​(int sc)</code></th>
<td class="colLast">
<div class="block">Sets the status code for this response.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpServletResponse.html#setStatus-int-java.lang.String-">setStatus</a></span>​(int sc,
java.lang.String sm)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">As of version 2.1, due to ambiguous meaning of the message
parameter.</div>
</div>
</td>
</tr>
</table>
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<h3>Methods inherited from interface javax.servlet.<a href="../../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</a></h3>
<code><a href="../../../javax/servlet/ServletResponse.html#flushBuffer--">flushBuffer</a>, <a href="../../../javax/servlet/ServletResponse.html#getBufferSize--">getBufferSize</a>, <a href="../../../javax/servlet/ServletResponse.html#getCharacterEncoding--">getCharacterEncoding</a>, <a href="../../../javax/servlet/ServletResponse.html#getContentType--">getContentType</a>, <a href="../../../javax/servlet/ServletResponse.html#getLocale--">getLocale</a>, <a href="../../../javax/servlet/ServletResponse.html#getOutputStream--">getOutputStream</a>, <a href="../../../javax/servlet/ServletResponse.html#getWriter--">getWriter</a>, <a href="../../../javax/servlet/ServletResponse.html#isCommitted--">isCommitted</a>, <a href="../../../javax/servlet/ServletResponse.html#reset--">reset</a>, <a href="../../../javax/servlet/ServletResponse.html#resetBuffer--">resetBuffer</a>, <a href="../../../javax/servlet/ServletResponse.html#setBufferSize-int-">setBufferSize</a>, <a href="../../../javax/servlet/ServletResponse.html#setCharacterEncoding-java.lang.String-">setCharacterEncoding</a>, <a href="../../../javax/servlet/ServletResponse.html#setContentLength-int-">setContentLength</a>, <a href="../../../javax/servlet/ServletResponse.html#setContentLengthLong-long-">setContentLengthLong</a>, <a href="../../../javax/servlet/ServletResponse.html#setContentType-java.lang.String-">setContentType</a>, <a href="../../../javax/servlet/ServletResponse.html#setLocale-java.util.Locale-">setLocale</a></code></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
<div class="details">
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<h3>Field Detail</h3>
<a name="SC_CONTINUE">
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<ul class="blockList">
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<h4>SC_CONTINUE</h4>
<pre>static final int SC_CONTINUE</pre>
<div class="block">Status code (100) indicating the client can continue.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_CONTINUE">Constant Field Values</a></dd>
</dl>
</li>
</ul>
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<h4>SC_SWITCHING_PROTOCOLS</h4>
<pre>static final int SC_SWITCHING_PROTOCOLS</pre>
<div class="block">Status code (101) indicating the server is switching protocols according
to Upgrade header.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_SWITCHING_PROTOCOLS">Constant Field Values</a></dd>
</dl>
</li>
</ul>
<a name="SC_OK">
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<h4>SC_OK</h4>
<pre>static final int SC_OK</pre>
<div class="block">Status code (200) indicating the request succeeded normally.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_OK">Constant Field Values</a></dd>
</dl>
</li>
</ul>
<a name="SC_CREATED">
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<h4>SC_CREATED</h4>
<pre>static final int SC_CREATED</pre>
<div class="block">Status code (201) indicating the request succeeded and created a new
resource on the server.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
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<pre>static final int SC_ACCEPTED</pre>
<div class="block">Status code (202) indicating that a request was accepted for processing,
but was not completed.</div>
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<pre>static final int SC_NON_AUTHORITATIVE_INFORMATION</pre>
<div class="block">Status code (203) indicating that the meta information presented by the
client did not originate from the server.</div>
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<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_NON_AUTHORITATIVE_INFORMATION">Constant Field Values</a></dd>
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<pre>static final int SC_NO_CONTENT</pre>
<div class="block">Status code (204) indicating that the request succeeded but that there
was no new information to return.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_NO_CONTENT">Constant Field Values</a></dd>
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<pre>static final int SC_RESET_CONTENT</pre>
<div class="block">Status code (205) indicating that the agent <em>SHOULD</em> reset the
document view which caused the request to be sent.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_RESET_CONTENT">Constant Field Values</a></dd>
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<pre>static final int SC_PARTIAL_CONTENT</pre>
<div class="block">Status code (206) indicating that the server has fulfilled the partial
GET request for the resource.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_PARTIAL_CONTENT">Constant Field Values</a></dd>
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<pre>static final int SC_MULTIPLE_CHOICES</pre>
<div class="block">Status code (300) indicating that the requested resource corresponds to
any one of a set of representations, each with its own specific location.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_MULTIPLE_CHOICES">Constant Field Values</a></dd>
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<pre>static final int SC_MOVED_PERMANENTLY</pre>
<div class="block">Status code (301) indicating that the resource has permanently moved to a
new location, and that future references should use a new URI with their
requests.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_MOVED_PERMANENTLY">Constant Field Values</a></dd>
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<pre>static final int SC_MOVED_TEMPORARILY</pre>
<div class="block">Status code (302) indicating that the resource has temporarily moved to
another location, but that future references should still use the
original URI to access the resource. This definition is being retained
for backwards compatibility. SC_FOUND is now the preferred definition.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_MOVED_TEMPORARILY">Constant Field Values</a></dd>
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<pre>static final int SC_FOUND</pre>
<div class="block">Status code (302) indicating that the resource reside temporarily under a
different URI. Since the redirection might be altered on occasion, the
client should continue to use the Request-URI for future
requests.(HTTP/1.1) To represent the status code (302), it is recommended
to use this variable.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_FOUND">Constant Field Values</a></dd>
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<pre>static final int SC_SEE_OTHER</pre>
<div class="block">Status code (303) indicating that the response to the request can be
found under a different URI.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_SEE_OTHER">Constant Field Values</a></dd>
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<pre>static final int SC_NOT_MODIFIED</pre>
<div class="block">Status code (304) indicating that a conditional GET operation found that
the resource was available and not modified.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_NOT_MODIFIED">Constant Field Values</a></dd>
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<pre>static final int SC_USE_PROXY</pre>
<div class="block">Status code (305) indicating that the requested resource <em>MUST</em> be
accessed through the proxy given by the <code><em>Location</em></code>
field.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_USE_PROXY">Constant Field Values</a></dd>
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<pre>static final int SC_TEMPORARY_REDIRECT</pre>
<div class="block">Status code (307) indicating that the requested resource resides
temporarily under a different URI. The temporary URI <em>SHOULD</em> be
given by the <code><em>Location</em></code> field in the response.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_TEMPORARY_REDIRECT">Constant Field Values</a></dd>
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<pre>static final int SC_BAD_REQUEST</pre>
<div class="block">Status code (400) indicating the request sent by the client was
syntactically incorrect.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_BAD_REQUEST">Constant Field Values</a></dd>
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<pre>static final int SC_UNAUTHORIZED</pre>
<div class="block">Status code (401) indicating that the request requires HTTP
authentication.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_UNAUTHORIZED">Constant Field Values</a></dd>
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<pre>static final int SC_PAYMENT_REQUIRED</pre>
<div class="block">Status code (402) reserved for future use.</div>
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<pre>static final int SC_FORBIDDEN</pre>
<div class="block">Status code (403) indicating the server understood the request but
refused to fulfill it.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_FORBIDDEN">Constant Field Values</a></dd>
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<pre>static final int SC_NOT_FOUND</pre>
<div class="block">Status code (404) indicating that the requested resource is not
available.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_NOT_FOUND">Constant Field Values</a></dd>
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<pre>static final int SC_METHOD_NOT_ALLOWED</pre>
<div class="block">Status code (405) indicating that the method specified in the
<code><em>Request-Line</em></code> is not allowed for the resource
identified by the <code><em>Request-URI</em></code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_METHOD_NOT_ALLOWED">Constant Field Values</a></dd>
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<pre>static final int SC_NOT_ACCEPTABLE</pre>
<div class="block">Status code (406) indicating that the resource identified by the request
is only capable of generating response entities which have content
characteristics not acceptable according to the accept headers sent in
the request.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_NOT_ACCEPTABLE">Constant Field Values</a></dd>
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<pre>static final int SC_PROXY_AUTHENTICATION_REQUIRED</pre>
<div class="block">Status code (407) indicating that the client <em>MUST</em> first
authenticate itself with the proxy.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_PROXY_AUTHENTICATION_REQUIRED">Constant Field Values</a></dd>
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<pre>static final int SC_REQUEST_TIMEOUT</pre>
<div class="block">Status code (408) indicating that the client did not produce a request
within the time that the server was prepared to wait.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_REQUEST_TIMEOUT">Constant Field Values</a></dd>
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<pre>static final int SC_CONFLICT</pre>
<div class="block">Status code (409) indicating that the request could not be completed due
to a conflict with the current state of the resource.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_CONFLICT">Constant Field Values</a></dd>
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<pre>static final int SC_GONE</pre>
<div class="block">Status code (410) indicating that the resource is no longer available at
the server and no forwarding address is known. This condition
<em>SHOULD</em> be considered permanent.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_GONE">Constant Field Values</a></dd>
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<pre>static final int SC_LENGTH_REQUIRED</pre>
<div class="block">Status code (411) indicating that the request cannot be handled without a
defined <code><em>Content-Length</em></code>.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_LENGTH_REQUIRED">Constant Field Values</a></dd>
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<pre>static final int SC_PRECONDITION_FAILED</pre>
<div class="block">Status code (412) indicating that the precondition given in one or more
of the request-header fields evaluated to false when it was tested on the
server.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_PRECONDITION_FAILED">Constant Field Values</a></dd>
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<pre>static final int SC_REQUEST_ENTITY_TOO_LARGE</pre>
<div class="block">Status code (413) indicating that the server is refusing to process the
request because the request entity is larger than the server is willing
or able to process.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_REQUEST_ENTITY_TOO_LARGE">Constant Field Values</a></dd>
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<pre>static final int SC_REQUEST_URI_TOO_LONG</pre>
<div class="block">Status code (414) indicating that the server is refusing to service the
request because the <code><em>Request-URI</em></code> is longer than the
server is willing to interpret.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_REQUEST_URI_TOO_LONG">Constant Field Values</a></dd>
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<pre>static final int SC_UNSUPPORTED_MEDIA_TYPE</pre>
<div class="block">Status code (415) indicating that the server is refusing to service the
request because the entity of the request is in a format not supported by
the requested resource for the requested method.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE">Constant Field Values</a></dd>
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<pre>static final int SC_REQUESTED_RANGE_NOT_SATISFIABLE</pre>
<div class="block">Status code (416) indicating that the server cannot serve the requested
byte range.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE">Constant Field Values</a></dd>
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<pre>static final int SC_EXPECTATION_FAILED</pre>
<div class="block">Status code (417) indicating that the server could not meet the
expectation given in the Expect request header.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_EXPECTATION_FAILED">Constant Field Values</a></dd>
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<pre>static final int SC_INTERNAL_SERVER_ERROR</pre>
<div class="block">Status code (500) indicating an error inside the HTTP server which
prevented it from fulfilling the request.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_INTERNAL_SERVER_ERROR">Constant Field Values</a></dd>
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<pre>static final int SC_NOT_IMPLEMENTED</pre>
<div class="block">Status code (501) indicating the HTTP server does not support the
functionality needed to fulfill the request.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_NOT_IMPLEMENTED">Constant Field Values</a></dd>
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<pre>static final int SC_BAD_GATEWAY</pre>
<div class="block">Status code (502) indicating that the HTTP server received an invalid
response from a server it consulted when acting as a proxy or gateway.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_BAD_GATEWAY">Constant Field Values</a></dd>
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<pre>static final int SC_SERVICE_UNAVAILABLE</pre>
<div class="block">Status code (503) indicating that the HTTP server is temporarily
overloaded, and unable to handle the request.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_SERVICE_UNAVAILABLE">Constant Field Values</a></dd>
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<pre>static final int SC_GATEWAY_TIMEOUT</pre>
<div class="block">Status code (504) indicating that the server did not receive a timely
response from the upstream server while acting as a gateway or proxy.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_GATEWAY_TIMEOUT">Constant Field Values</a></dd>
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<pre>static final int SC_HTTP_VERSION_NOT_SUPPORTED</pre>
<div class="block">Status code (505) indicating that the server does not support or refuses
to support the HTTP protocol version that was used in the request
message.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.http.HttpServletResponse.SC_HTTP_VERSION_NOT_SUPPORTED">Constant Field Values</a></dd>
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<pre>void addCookie​(<a href="../../../javax/servlet/http/Cookie.html" title="class in javax.servlet.http">Cookie</a> cookie)</pre>
<div class="block">Adds the specified cookie to the response. This method can be called
multiple times to set more than one cookie.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cookie</code> - the Cookie to return to the client</dd>
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<pre>boolean containsHeader​(java.lang.String name)</pre>
<div class="block">Returns a boolean indicating whether the named response header has
already been set.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the header name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if the named response header has already been
set; <code>false</code> otherwise</dd>
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<pre>java.lang.String encodeURL​(java.lang.String url)</pre>
<div class="block">Encodes the specified URL by including the session ID in it, or, if
encoding is not needed, returns the URL unchanged. The implementation of
this method includes the logic to determine whether the session ID needs
to be encoded in the URL. For example, if the browser supports cookies,
or session tracking is turned off, URL encoding is unnecessary.
<p>
For robust session tracking, all URLs emitted by a servlet should be run
through this method. Otherwise, URL rewriting cannot be used with
browsers which do not support cookies.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>url</code> - the url to be encoded.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the encoded URL if encoding is needed; the unchanged URL
otherwise.</dd>
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<h4>encodeRedirectURL</h4>
<pre>java.lang.String encodeRedirectURL​(java.lang.String url)</pre>
<div class="block">Encodes the specified URL for use in the <code>sendRedirect</code> method
or, if encoding is not needed, returns the URL unchanged. The
implementation of this method includes the logic to determine whether the
session ID needs to be encoded in the URL. Because the rules for making
this determination can differ from those used to decide whether to encode
a normal link, this method is separated from the <code>encodeURL</code>
method.
<p>
All URLs sent to the <code>HttpServletResponse.sendRedirect</code> method
should be run through this method. Otherwise, URL rewriting cannot be
used with browsers which do not support cookies.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>url</code> - the url to be encoded.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the encoded URL if encoding is needed; the unchanged URL
otherwise.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#sendRedirect-java.lang.String-"><code>sendRedirect(java.lang.String)</code></a>,
<a href="../../../javax/servlet/http/HttpServletResponse.html#encodeUrl-java.lang.String-"><code>encodeUrl(java.lang.String)</code></a></dd>
</dl>
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<pre>java.lang.String encodeUrl​(java.lang.String url)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">As of version 2.1, use encodeURL(String url) instead</div>
</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>url</code> - the url to be encoded.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the encoded URL if encoding is needed; the unchanged URL
otherwise.</dd>
</dl>
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</ul>
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<pre>java.lang.String encodeRedirectUrl​(java.lang.String url)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">As of version 2.1, use encodeRedirectURL(String url) instead</div>
</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>url</code> - the url to be encoded.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the encoded URL if encoding is needed; the unchanged URL
otherwise.</dd>
</dl>
</li>
</ul>
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<h4>sendError</h4>
<pre>void sendError​(int sc,
java.lang.String msg)
throws java.io.IOException</pre>
<div class="block">Sends an error response to the client using the specified status code and
clears the output buffer. The server defaults to creating the response to
look like an HTML-formatted server error page containing the specified
message, setting the content type to "text/html", leaving cookies and
other headers unmodified. If an error-page declaration has been made for
the web application corresponding to the status code passed in, it will
be served back in preference to the suggested msg parameter.
<p>
If the response has already been committed, this method throws an
IllegalStateException. After using this method, the response should be
considered to be committed and should not be written to.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sc</code> - the error status code</dd>
<dd><code>msg</code> - the descriptive message</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an input or output exception occurs</dd>
<dd><code>java.lang.IllegalStateException</code> - If the response was committed</dd>
</dl>
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<h4>sendError</h4>
<pre>void sendError​(int sc)
throws java.io.IOException</pre>
<div class="block">Sends an error response to the client using the specified status code and
clears the buffer. This is equivalent to calling <a href="../../../javax/servlet/http/HttpServletResponse.html#sendError-int-java.lang.String-"><code>sendError(int,
String)</code></a> with the same status code and <code>null</code> for the message.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sc</code> - the error status code</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an input or output exception occurs</dd>
<dd><code>java.lang.IllegalStateException</code> - If the response was committed before this method call</dd>
</dl>
</li>
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<h4>sendRedirect</h4>
<pre>void sendRedirect​(java.lang.String location)
throws java.io.IOException</pre>
<div class="block">Sends a temporary redirect response to the client using the specified
redirect location URL. This method can accept relative URLs; the servlet
container must convert the relative URL to an absolute URL before sending
the response to the client. If the location is relative without a leading
'/' the container interprets it as relative to the current request URI.
If the location is relative with a leading '/' the container interprets
it as relative to the servlet container root.
<p>
If the response has already been committed, this method throws an
IllegalStateException. After using this method, the response should be
considered to be committed and should not be written to.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>location</code> - the redirect location URL</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an input or output exception occurs</dd>
<dd><code>java.lang.IllegalStateException</code> - If the response was committed or if a partial URL is given
and cannot be converted into a valid URL</dd>
</dl>
</li>
</ul>
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<h4>setDateHeader</h4>
<pre>void setDateHeader​(java.lang.String name,
long date)</pre>
<div class="block">Sets a response header with the given name and date-value. The date is
specified in terms of milliseconds since the epoch. If the header had
already been set, the new value overwrites the previous one. The
<code>containsHeader</code> method can be used to test for the presence
of a header before setting its value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the header to set</dd>
<dd><code>date</code> - the assigned date value</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#containsHeader-java.lang.String-"><code>containsHeader(java.lang.String)</code></a>,
<a href="../../../javax/servlet/http/HttpServletResponse.html#addDateHeader-java.lang.String-long-"><code>addDateHeader(java.lang.String, long)</code></a></dd>
</dl>
</li>
</ul>
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<h4>addDateHeader</h4>
<pre>void addDateHeader​(java.lang.String name,
long date)</pre>
<div class="block">Adds a response header with the given name and date-value. The date is
specified in terms of milliseconds since the epoch. This method allows
response headers to have multiple values.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the header to set</dd>
<dd><code>date</code> - the additional date value</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#setDateHeader-java.lang.String-long-"><code>setDateHeader(java.lang.String, long)</code></a></dd>
</dl>
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<h4>setHeader</h4>
<pre>void setHeader​(java.lang.String name,
java.lang.String value)</pre>
<div class="block">Sets a response header with the given name and value. If the header had
already been set, the new value overwrites the previous one. The
<code>containsHeader</code> method can be used to test for the presence
of a header before setting its value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the header</dd>
<dd><code>value</code> - the header value If it contains octet string, it should be
encoded according to RFC 2047
(http://www.ietf.org/rfc/rfc2047.txt)</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#containsHeader-java.lang.String-"><code>containsHeader(java.lang.String)</code></a>,
<a href="../../../javax/servlet/http/HttpServletResponse.html#addHeader-java.lang.String-java.lang.String-"><code>addHeader(java.lang.String, java.lang.String)</code></a></dd>
</dl>
</li>
</ul>
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<h4>addHeader</h4>
<pre>void addHeader​(java.lang.String name,
java.lang.String value)</pre>
<div class="block">Adds a response header with the given name and value. This method allows
response headers to have multiple values.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the header</dd>
<dd><code>value</code> - the additional header value If it contains octet string, it
should be encoded according to RFC 2047
(http://www.ietf.org/rfc/rfc2047.txt)</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#setHeader-java.lang.String-java.lang.String-"><code>setHeader(java.lang.String, java.lang.String)</code></a></dd>
</dl>
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<h4>setIntHeader</h4>
<pre>void setIntHeader​(java.lang.String name,
int value)</pre>
<div class="block">Sets a response header with the given name and integer value. If the
header had already been set, the new value overwrites the previous one.
The <code>containsHeader</code> method can be used to test for the
presence of a header before setting its value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the header</dd>
<dd><code>value</code> - the assigned integer value</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#containsHeader-java.lang.String-"><code>containsHeader(java.lang.String)</code></a>,
<a href="../../../javax/servlet/http/HttpServletResponse.html#addIntHeader-java.lang.String-int-"><code>addIntHeader(java.lang.String, int)</code></a></dd>
</dl>
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<pre>void addIntHeader​(java.lang.String name,
int value)</pre>
<div class="block">Adds a response header with the given name and integer value. This method
allows response headers to have multiple values.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the header</dd>
<dd><code>value</code> - the assigned integer value</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#setIntHeader-java.lang.String-int-"><code>setIntHeader(java.lang.String, int)</code></a></dd>
</dl>
</li>
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<h4>setStatus</h4>
<pre>void setStatus​(int sc)</pre>
<div class="block">Sets the status code for this response. This method is used to set the
return status code when there is no error (for example, for the status
codes SC_OK or SC_MOVED_TEMPORARILY). If there is an error, and the
caller wishes to invoke an error-page defined in the web application, the
<code>sendError</code> method should be used instead.
<p>
The container clears the buffer and sets the Location header, preserving
cookies and other headers.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sc</code> - the status code</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/http/HttpServletResponse.html#sendError-int-java.lang.String-"><code>sendError(int, java.lang.String)</code></a></dd>
</dl>
</li>
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<h4>setStatus</h4>
<pre>void setStatus​(int sc,
java.lang.String sm)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">As of version 2.1, due to ambiguous meaning of the message
parameter. To set a status code use
<code>setStatus(int)</code>, to send an error with a
description use <code>sendError(int, String)</code>.</div>
</div>
<div class="block">Sets the status code and message for this response.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sc</code> - the status code</dd>
<dd><code>sm</code> - the status message</dd>
</dl>
</li>
</ul>
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<h4>getStatus</h4>
<pre>int getStatus()</pre>
<div class="block">Get the HTTP status code for this Response.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The HTTP status code for this Response</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>Servlet 3.0</dd>
</dl>
</li>
</ul>
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<h4>getHeader</h4>
<pre>java.lang.String getHeader​(java.lang.String name)</pre>
<div class="block">Return the value for the specified header, or <code>null</code> if this
header has not been set. If more than one value was added for this
name, only the first is returned; use <a href="../../../javax/servlet/http/HttpServletResponse.html#getHeaders-java.lang.String-"><code>getHeaders(String)</code></a> to
retrieve all of them.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - Header name to look up</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The first value for the specified header. This is the raw value
so if multiple values are specified in the first header then they
will be returned as a single header value .</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>Servlet 3.0</dd>
</dl>
</li>
</ul>
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<h4>getHeaders</h4>
<pre>java.util.Collection<java.lang.String> getHeaders​(java.lang.String name)</pre>
<div class="block">Return a Collection of all the header values associated with the
specified header name.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - Header name to look up</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The values for the specified header. These are the raw values so
if multiple values are specified in a single header that will be
returned as a single header value.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>Servlet 3.0</dd>
</dl>
</li>
</ul>
<a name="getHeaderNames--">
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<li class="blockList">
<h4>getHeaderNames</h4>
<pre>java.util.Collection<java.lang.String> getHeaderNames()</pre>
<div class="block">Get the header names set for this HTTP response.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The header names set for this HTTP response.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>Servlet 3.0</dd>
</dl>
</li>
</ul>
</li>
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