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<h2 title="Class HttpUtils" class="title">Class HttpUtils</h2>
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<li>java.lang.Object</li>
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<li>javax.servlet.http.HttpUtils</li>
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<pre>public class <span class="typeNameLabel">HttpUtils</span>
extends java.lang.Object</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">As of Java(tm) Servlet API 2.3.
These methods were only useful
with the default encoding and have been moved
to the request interfaces.</div>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpUtils.html#HttpUtils--">HttpUtils</a></span>()</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Constructs an empty <code>HttpUtils</code> object.</div>
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<td class="colFirst"><code>static java.lang.StringBuffer</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpUtils.html#getRequestURL-javax.servlet.http.HttpServletRequest-">getRequestURL</a></span>​(<a href="../../../javax/servlet/http/HttpServletRequest.html" title="interface in javax.servlet.http">HttpServletRequest</a> req)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Reconstructs the URL the client used to make the request,
using information in the <code>HttpServletRequest</code> object.</div>
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<td class="colFirst"><code>static java.util.Hashtable<java.lang.String,java.lang.String[]></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpUtils.html#parsePostData-int-javax.servlet.ServletInputStream-">parsePostData</a></span>​(int len,
<a href="../../../javax/servlet/ServletInputStream.html" title="class in javax.servlet">ServletInputStream</a> in)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Parses data from an HTML form that the client sends to
the server using the HTTP POST method and the
<i>application/x-www-form-urlencoded</i> MIME type.</div>
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<td class="colFirst"><code>static java.util.Hashtable<java.lang.String,java.lang.String[]></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../javax/servlet/http/HttpUtils.html#parseQueryString-java.lang.String-">parseQueryString</a></span>​(java.lang.String s)</code></th>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Parses a query string passed from the client to the
server and builds a <code>HashTable</code> object
with key-value pairs.</div>
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<h4>HttpUtils</h4>
<pre>public HttpUtils()</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Constructs an empty <code>HttpUtils</code> object.</div>
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<h4>parseQueryString</h4>
<pre>public static java.util.Hashtable<java.lang.String,java.lang.String[]> parseQueryString​(java.lang.String s)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Parses a query string passed from the client to the
server and builds a <code>HashTable</code> object
with key-value pairs.
The query string should be in the form of a string
packaged by the GET or POST method, that is, it
should have key-value pairs in the form <i>key=value</i>,
with each pair separated from the next by a & character.
<p>A key can appear more than once in the query string
with different values. However, the key appears only once in
the hashtable, with its value being
an array of strings containing the multiple values sent
by the query string.
<p>The keys and values in the hashtable are stored in their
decoded form, so
any + characters are converted to spaces, and characters
sent in hexadecimal notation (like <i>%xx</i>) are
converted to ASCII characters.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>s</code> - a string containing the query to be parsed</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <code>HashTable</code> object built
from the parsed key-value pairs</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.lang.IllegalArgumentException</code> - if the query string
is invalid</dd>
</dl>
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<h4>parsePostData</h4>
<pre>public static java.util.Hashtable<java.lang.String,java.lang.String[]> parsePostData​(int len,
<a href="../../../javax/servlet/ServletInputStream.html" title="class in javax.servlet">ServletInputStream</a> in)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Parses data from an HTML form that the client sends to
the server using the HTTP POST method and the
<i>application/x-www-form-urlencoded</i> MIME type.
<p>The data sent by the POST method contains key-value
pairs. A key can appear more than once in the POST data
with different values. However, the key appears only once in
the hashtable, with its value being
an array of strings containing the multiple values sent
by the POST method.
<p>The keys and values in the hashtable are stored in their
decoded form, so
any + characters are converted to spaces, and characters
sent in hexadecimal notation (like <i>%xx</i>) are
converted to ASCII characters.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>len</code> - an integer specifying the length,
in characters, of the
<code>ServletInputStream</code>
object that is also passed to this
method</dd>
<dd><code>in</code> - the <code>ServletInputStream</code>
object that contains the data sent
from the client</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <code>HashTable</code> object built
from the parsed key-value pairs</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.lang.IllegalArgumentException</code> - if the data
sent by the POST method is invalid</dd>
</dl>
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<h4>getRequestURL</h4>
<pre>public static java.lang.StringBuffer getRequestURL​(<a href="../../../javax/servlet/http/HttpServletRequest.html" title="interface in javax.servlet.http">HttpServletRequest</a> req)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Reconstructs the URL the client used to make the request,
using information in the <code>HttpServletRequest</code> object.
The returned URL contains a protocol, server name, port
number, and server path, but it does not include query
string parameters.
<p>Because this method returns a <code>StringBuffer</code>,
not a string, you can modify the URL easily, for example,
to append query parameters.
<p>This method is useful for creating redirect messages
and for reporting errors.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>req</code> - a <code>HttpServletRequest</code> object
containing the client's request</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <code>StringBuffer</code> object containing
the reconstructed URL</dd>
</dl>
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