src/site/assets/static/1.2.2/apidocs/org/apache/shiro/web/util/WebUtils.html - shiro-site - Git at Google

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 <h2 title="Class WebUtils" class="title">Class WebUtils</h2>
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 <pre>public class <a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.50">WebUtils</a>
 extends <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
 <div class="block">Simple utility class for operations used across multiple class hierarchies in the web framework code.
  <p/>
  Some methods in this class were copied from the Spring Framework so we didn't have to re-invent the wheel,
  and in these cases, we have retained all license, copyright and author information.</div>
 <dl><dt><span class="strong">Since:</span></dt>
   <dd>0.9</dd></dl>
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 <h3>Field Summary</h3>
 <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
 <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 <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#DEFAULT_CHARACTER_ENCODING">DEFAULT_CHARACTER_ENCODING</a></strong></code>
 <div class="block">Default character encoding to use when <code>request.getCharacterEncoding</code>
  returns <code>null</code>, according to the Servlet spec.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#FORWARD_CONTEXT_PATH_ATTRIBUTE">FORWARD_CONTEXT_PATH_ATTRIBUTE</a></strong></code>&nbsp;</td>
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 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#FORWARD_PATH_INFO_ATTRIBUTE">FORWARD_PATH_INFO_ATTRIBUTE</a></strong></code>&nbsp;</td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#FORWARD_QUERY_STRING_ATTRIBUTE">FORWARD_QUERY_STRING_ATTRIBUTE</a></strong></code>&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#FORWARD_REQUEST_URI_ATTRIBUTE">FORWARD_REQUEST_URI_ATTRIBUTE</a></strong></code>
 <div class="block">Standard Servlet 2.4+ spec request attributes for forward URI and paths.</div>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#FORWARD_SERVLET_PATH_ATTRIBUTE">FORWARD_SERVLET_PATH_ATTRIBUTE</a></strong></code>&nbsp;</td>
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 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#INCLUDE_CONTEXT_PATH_ATTRIBUTE">INCLUDE_CONTEXT_PATH_ATTRIBUTE</a></strong></code>&nbsp;</td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#INCLUDE_PATH_INFO_ATTRIBUTE">INCLUDE_PATH_INFO_ATTRIBUTE</a></strong></code>&nbsp;</td>
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 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#INCLUDE_QUERY_STRING_ATTRIBUTE">INCLUDE_QUERY_STRING_ATTRIBUTE</a></strong></code>&nbsp;</td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#INCLUDE_REQUEST_URI_ATTRIBUTE">INCLUDE_REQUEST_URI_ATTRIBUTE</a></strong></code>
 <div class="block">Standard Servlet 2.3+ spec request attributes for include URI and paths.</div>
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 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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 <div class="block"><a href="../../../../../org/apache/shiro/session/Session.html" title="interface in org.apache.shiro.session"><code>Session</code></a> key used to save a request and later restore it, for example when redirecting to a
  requested page after login, equal to <code>shiroSavedRequest</code>.</div>
 </td>
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 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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 <td class="colOne"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#WebUtils()">WebUtils</a></strong>()</code>&nbsp;</td>
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 <th class="colLast" scope="col">Method and Description</th>
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 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#_isSessionCreationEnabled(java.lang.Object)">_isSessionCreationEnabled</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</code>
 <div class="block">Returns <code>true</code> if a session is allowed to be created for a subject-associated request, <code>false</code>
  otherwise.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#_isSessionCreationEnabled(javax.servlet.ServletRequest)">_isSessionCreationEnabled</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request)</code>
 <div class="block">Returns <code>true</code> if a session is allowed to be created for a subject-associated request, <code>false</code>
  otherwise.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#decodeRequestString(javax.servlet.http.HttpServletRequest, java.lang.String)">decodeRequestString</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request,
                                       <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;source)</code>
 <div class="block">Decode the given source string with a URLDecoder.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>protected static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#determineEncoding(javax.servlet.http.HttpServletRequest)">determineEncoding</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request)</code>
 <div class="block">Determine the encoding for the given request.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/shiro/web/util/SavedRequest.html" title="class in org.apache.shiro.web.util">SavedRequest</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getAndClearSavedRequest(javax.servlet.ServletRequest)">getAndClearSavedRequest</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request)</code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getCleanParam(javax.servlet.ServletRequest, java.lang.String)">getCleanParam</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                           <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;paramName)</code>
 <div class="block">Convenience method that returns a request parameter value, first running it through
  <a href="../../../../../org/apache/shiro/util/StringUtils.html#clean(java.lang.String)"><code>StringUtils.clean(String)</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getContextPath(javax.servlet.http.HttpServletRequest)">getContextPath</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request)</code>
 <div class="block">Return the context path for the given request, detecting an include request
  URL if called within a RequestDispatcher include.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getHttpRequest(java.lang.Object)">getHttpRequest</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</code>&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletResponse.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletResponse</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getHttpResponse(java.lang.Object)">getHttpResponse</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getPathWithinApplication(javax.servlet.http.HttpServletRequest)">getPathWithinApplication</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request)</code>
 <div class="block">Return the path within the web application for the given request.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getRequest(java.lang.Object)">getRequest</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</code>&nbsp;</td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getRequestUri(javax.servlet.http.HttpServletRequest)">getRequestUri</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request)</code>
 <div class="block">Return the request URI for the given request, detecting an include request
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 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env">WebEnvironment</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getRequiredWebEnvironment(javax.servlet.ServletContext)">getRequiredWebEnvironment</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletContext.html?is-external=true" title="class or interface in javax.servlet">ServletContext</a>&nbsp;sc)</code>
 <div class="block">Find the Shiro <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env"><code>WebEnvironment</code></a> for this web application, which is typically loaded via the
  <a href="../../../../../org/apache/shiro/web/env/EnvironmentLoaderListener.html" title="class in org.apache.shiro.web.env"><code>EnvironmentLoaderListener</code></a>.</div>
 </td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getResponse(java.lang.Object)">getResponse</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</code>&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/shiro/web/util/SavedRequest.html" title="class in org.apache.shiro.web.util">SavedRequest</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getSavedRequest(javax.servlet.ServletRequest)">getSavedRequest</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request)</code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env">WebEnvironment</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getWebEnvironment(javax.servlet.ServletContext)">getWebEnvironment</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletContext.html?is-external=true" title="class or interface in javax.servlet">ServletContext</a>&nbsp;sc)</code>
 <div class="block">Find the Shiro <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env"><code>WebEnvironment</code></a> for this web application, which is typically loaded via
  <a href="../../../../../org/apache/shiro/web/env/EnvironmentLoaderListener.html" title="class in org.apache.shiro.web.env"><code>EnvironmentLoaderListener</code></a>.</div>
 </td>
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 <tr class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env">WebEnvironment</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#getWebEnvironment(javax.servlet.ServletContext, java.lang.String)">getWebEnvironment</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletContext.html?is-external=true" title="class or interface in javax.servlet">ServletContext</a>&nbsp;sc,
                                   <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;attrName)</code>
 <div class="block">Find the Shiro <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env"><code>WebEnvironment</code></a> for this web application.</div>
 </td>
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 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#isHttp(java.lang.Object)">isHttp</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</code>&nbsp;</td>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#issueRedirect(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String)">issueRedirect</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                           <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                           <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url)</code>
 <div class="block">Redirects the current request to a new URL based on the given parameters and default values
  for unspecified parameters.</div>
 </td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#issueRedirect(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String, java.util.Map)">issueRedirect</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                           <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                           <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url,
                           <a href="http://java.sun.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&nbsp;queryParams)</code>
 <div class="block">Redirects the current request to a new URL based on the given parameters and default values
  for unspecified parameters.</div>
 </td>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#issueRedirect(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String, java.util.Map, boolean)">issueRedirect</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                           <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                           <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url,
                           <a href="http://java.sun.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&nbsp;queryParams,
                           boolean&nbsp;contextRelative)</code>
 <div class="block">Redirects the current request to a new URL based on the given parameters and default values
  for unspecified parameters.</div>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#issueRedirect(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String, java.util.Map, boolean, boolean)">issueRedirect</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                           <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                           <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url,
                           <a href="http://java.sun.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&nbsp;queryParams,
                           boolean&nbsp;contextRelative,
                           boolean&nbsp;http10Compatible)</code>
 <div class="block">Redirects the current request to a new URL based on the given parameters.</div>
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 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#isTrue(javax.servlet.ServletRequest, java.lang.String)">isTrue</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
             <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;paramName)</code>
 <div class="block">Checks to see if a request param is considered true using a loose matching strategy for
  general values that indicate that something is true or enabled, etc.</div>
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 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#isWeb(java.lang.Object)">isWeb</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</code>&nbsp;</td>
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 <td class="colFirst"><code>static <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#normalize(java.lang.String)">normalize</a></strong>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;path)</code>
 <div class="block">Normalize a relative URI path that may have relative values ("/./",
  "/../", and so on ) it it.</div>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#redirectToSavedRequest(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String)">redirectToSavedRequest</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                                             <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                                             <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fallbackUrl)</code>
 <div class="block">Redirects the to the request url from a previously
  <a href="../../../../../org/apache/shiro/web/util/WebUtils.html#saveRequest(javax.servlet.ServletRequest)"><code>saved</code></a> request, or if there is no saved request, redirects the
  end user to the specified <code>fallbackUrl</code>.</div>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#saveRequest(javax.servlet.ServletRequest)">saveRequest</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request)</code>&nbsp;</td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#toHttp(javax.servlet.ServletRequest)">toHttp</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request)</code>
 <div class="block">A convenience method that merely casts the incoming <code>ServletRequest</code> to an
  <code>HttpServletRequest</code>:
  <p/>
  <code>return (HttpServletRequest)request;</code>
  <p/>
  Logic could be changed in the future for logging or throwing an meaningful exception in
  non HTTP request environments (e.g.</div>
 </td>
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 <td class="colFirst"><code>static <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletResponse.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletResponse</a></code></td>
 <td class="colLast"><code><strong><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#toHttp(javax.servlet.ServletResponse)">toHttp</a></strong>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response)</code>
 <div class="block">A convenience method that merely casts the incoming <code>ServletResponse</code> to an
  <code>HttpServletResponse</code>:
  <p/>
  <code>return (HttpServletResponse)response;</code>
  <p/>
  Logic could be changed in the future for logging or throwing an meaningful exception in
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 <code><a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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 <div class="block"><a href="../../../../../org/apache/shiro/session/Session.html" title="interface in org.apache.shiro.session"><code>Session</code></a> key used to save a request and later restore it, for example when redirecting to a
  requested page after login, equal to <code>shiroSavedRequest</code>.</div>
 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.shiro.web.util.WebUtils.SAVED_REQUEST_KEY">Constant Field Values</a></dd></dl>
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 <div class="block">Standard Servlet 2.3+ spec request attributes for include URI and paths.
  <p>If included via a RequestDispatcher, the current resource will see the
  originating request. Its own URI and paths are exposed as request attributes.</div>
 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.shiro.web.util.WebUtils.INCLUDE_REQUEST_URI_ATTRIBUTE">Constant Field Values</a></dd></dl>
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 <div class="block">Standard Servlet 2.4+ spec request attributes for forward URI and paths.
  <p>If forwarded to via a RequestDispatcher, the current resource will see its
  own URI and paths. The originating URI and paths are exposed as request attributes.</div>
 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.shiro.web.util.WebUtils.FORWARD_REQUEST_URI_ATTRIBUTE">Constant Field Values</a></dd></dl>
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 <div class="block">Default character encoding to use when <code>request.getCharacterEncoding</code>
  returns <code>null</code>, according to the Servlet spec.</div>
 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true#getCharacterEncoding()" title="class or interface in javax.servlet"><code>ServletRequest.getCharacterEncoding()</code></a>,
 <a href="../../../../../constant-values.html#org.apache.shiro.web.util.WebUtils.DEFAULT_CHARACTER_ENCODING">Constant Field Values</a></dd></dl>
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 <div class="block">Return the path within the web application for the given request.
  Detects include request URL if called within a RequestDispatcher include.
  <p/>
  For example, for a request to URL
  <p/>
  <code>http://www.somehost.com/myapp/my/url.jsp</code>,
  <p/>
  for an application deployed to <code>/mayapp</code> (the application's context path), this method would return
  <p/>
  <code>/my/url.jsp</code>.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - current HTTP request</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the path within the web application</dd></dl>
 </li>
 </ul>
 <a name="getRequestUri(javax.servlet.http.HttpServletRequest)">
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 <h4>getRequestUri</h4>
 <pre>public static&nbsp;<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.135">getRequestUri</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request)</pre>
 <div class="block">Return the request URI for the given request, detecting an include request
  URL if called within a RequestDispatcher include.
  <p>As the value returned by <code>request.getRequestURI()</code> is <i>not</i>
  decoded by the servlet container, this method will decode it.
  <p>The URI that the web container resolves <i>should</i> be correct, but some
  containers like JBoss/Jetty incorrectly include ";" strings like ";jsessionid"
  in the URI. This method cuts off such incorrect appendices.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - current HTTP request</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the request URI</dd></dl>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.154">normalize</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;path)</pre>
 <div class="block">Normalize a relative URI path that may have relative values ("/./",
  "/../", and so on ) it it.  <strong>WARNING</strong> - This method is
  useful only for normalizing application-generated paths.  It does not
  try to perform security checks for malicious input.
  Normalize operations were was happily taken from org.apache.catalina.util.RequestUtil in
  Tomcat trunk, r939305</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>path</code> - Relative path to be normalized</dd>
 <dt><span class="strong">Returns:</span></dt><dd>normalized path</dd></dl>
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 <div class="block">Return the context path for the given request, detecting an include request
  URL if called within a RequestDispatcher include.
  <p>As the value returned by <code>request.getContextPath()</code> is <i>not</i>
  decoded by the servlet container, this method will decode it.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - current HTTP request</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the context path</dd></dl>
 </li>
 </ul>
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 <h4>getRequiredWebEnvironment</h4>
 <pre>public static&nbsp;<a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env">WebEnvironment</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.271">getRequiredWebEnvironment</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletContext.html?is-external=true" title="class or interface in javax.servlet">ServletContext</a>&nbsp;sc)
                                                 throws <a href="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></pre>
 <div class="block">Find the Shiro <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env"><code>WebEnvironment</code></a> for this web application, which is typically loaded via the
  <a href="../../../../../org/apache/shiro/web/env/EnvironmentLoaderListener.html" title="class in org.apache.shiro.web.env"><code>EnvironmentLoaderListener</code></a>.
  <p/>
  This implementation rethrows an exception that happened on environment startup to differentiate between a failed
  environment startup and no environment at all.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>sc</code> - ServletContext to find the web application context for</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the root WebApplicationContext for this web app</dd>
 <dt><span class="strong">Throws:</span></dt>
 <dd><code><a href="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the root WebApplicationContext could not be found</dd><dt><span class="strong">Since:</span></dt>
   <dd>1.2</dd>
 <dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/shiro/web/env/EnvironmentLoader.html#ENVIRONMENT_ATTRIBUTE_KEY"><code>EnvironmentLoader.ENVIRONMENT_ATTRIBUTE_KEY</code></a></dd></dl>
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 <pre>public static&nbsp;<a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env">WebEnvironment</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.293">getWebEnvironment</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletContext.html?is-external=true" title="class or interface in javax.servlet">ServletContext</a>&nbsp;sc)</pre>
 <div class="block">Find the Shiro <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env"><code>WebEnvironment</code></a> for this web application, which is typically loaded via
  <a href="../../../../../org/apache/shiro/web/env/EnvironmentLoaderListener.html" title="class in org.apache.shiro.web.env"><code>EnvironmentLoaderListener</code></a>.
  <p/>
  This implementation rethrows an exception that happened on environment startup to differentiate between a failed
  environment startup and no environment at all.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>sc</code> - ServletContext to find the web application context for</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the root WebApplicationContext for this web app, or <code>null</code> if none</dd><dt><span class="strong">Since:</span></dt>
   <dd>1.2</dd>
 <dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/shiro/web/env/EnvironmentLoader.html#ENVIRONMENT_ATTRIBUTE_KEY"><code>EnvironmentLoader.ENVIRONMENT_ATTRIBUTE_KEY</code></a></dd></dl>
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 <pre>public static&nbsp;<a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env">WebEnvironment</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.305">getWebEnvironment</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletContext.html?is-external=true" title="class or interface in javax.servlet">ServletContext</a>&nbsp;sc,
                                <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;attrName)</pre>
 <div class="block">Find the Shiro <a href="../../../../../org/apache/shiro/web/env/WebEnvironment.html" title="interface in org.apache.shiro.web.env"><code>WebEnvironment</code></a> for this web application.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>sc</code> - ServletContext to find the web application context for</dd><dd><code>attrName</code> - the name of the ServletContext attribute to look for</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the desired WebEnvironment for this web app, or <code>null</code> if none</dd><dt><span class="strong">Since:</span></dt>
   <dd>1.2</dd></dl>
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 </ul>
 <a name="decodeRequestString(javax.servlet.http.HttpServletRequest, java.lang.String)">
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 <h4>decodeRequestString</h4>
 <pre>public static&nbsp;<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.343">decodeRequestString</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request,
                          <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;source)</pre>
 <div class="block">Decode the given source string with a URLDecoder. The encoding will be taken
  from the request, falling back to the default "ISO-8859-1".
  <p>The default implementation uses <code>URLDecoder.decode(input, enc)</code>.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - current HTTP request</dd><dd><code>source</code> - the String to decode</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the decoded String</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/shiro/web/util/WebUtils.html#DEFAULT_CHARACTER_ENCODING"><code>DEFAULT_CHARACTER_ENCODING</code></a>,
 <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true#getCharacterEncoding()" title="class or interface in javax.servlet"><code>ServletRequest.getCharacterEncoding()</code></a>,
 <a href="http://java.sun.com/javase/6/docs/api/java/net/URLDecoder.html?is-external=true#decode(java.lang.String, java.lang.String)" title="class or interface in java.net"><code>URLDecoder.decode(String, String)</code></a>,
 <a href="http://java.sun.com/javase/6/docs/api/java/net/URLDecoder.html?is-external=true#decode(java.lang.String)" title="class or interface in java.net"><code>URLDecoder.decode(String)</code></a></dd></dl>
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 <a name="determineEncoding(javax.servlet.http.HttpServletRequest)">
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 <pre>protected static&nbsp;<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.367">determineEncoding</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;request)</pre>
 <div class="block">Determine the encoding for the given request.
  Can be overridden in subclasses.
  <p>The default implementation checks the request's
  <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true#getCharacterEncoding()" title="class or interface in javax.servlet"><code>character encoding</code></a>, and if that
  <code>null</code>, falls back to the <a href="../../../../../org/apache/shiro/web/util/WebUtils.html#DEFAULT_CHARACTER_ENCODING"><code>DEFAULT_CHARACTER_ENCODING</code></a>.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - current HTTP request</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the encoding for the request (never <code>null</code>)</dd><dt><span class="strong">See Also:</span></dt><dd><a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true#getCharacterEncoding()" title="class or interface in javax.servlet"><code>ServletRequest.getCharacterEncoding()</code></a></dd></dl>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.397">getRequest</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</pre>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.404">getResponse</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</pre>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.411">getHttpRequest</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</pre>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletResponse.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletResponse</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.419">getHttpResponse</a>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;requestPairSource)</pre>
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 <h4>_isSessionCreationEnabled</h4>
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 <div class="block">Returns <code>true</code> if a session is allowed to be created for a subject-associated request, <code>false</code>
  otherwise.
  <p/>
  <b>This method exists for Shiro's internal framework needs and should never be called by Shiro end-users.  It
  could be changed/removed at any time.</b></div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>requestPairSource</code> - a <a href="../../../../../org/apache/shiro/web/util/RequestPairSource.html" title="interface in org.apache.shiro.web.util"><code>RequestPairSource</code></a> instance, almost always a
                           <a href="../../../../../org/apache/shiro/web/subject/WebSubject.html" title="interface in org.apache.shiro.web.subject"><code>WebSubject</code></a> instance.</dd>
 <dt><span class="strong">Returns:</span></dt><dd><code>true</code> if a session is allowed to be created for a subject-associated request, <code>false</code>
          otherwise.</dd></dl>
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 <pre>public static&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.470">_isSessionCreationEnabled</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request)</pre>
 <div class="block">Returns <code>true</code> if a session is allowed to be created for a subject-associated request, <code>false</code>
  otherwise.
  <p/>
  <b>This method exists for Shiro's internal framework needs and should never be called by Shiro end-users.  It
  could be changed/removed at any time.</b></div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - incoming servlet request.</dd>
 <dt><span class="strong">Returns:</span></dt><dd><code>true</code> if a session is allowed to be created for a subject-associated request, <code>false</code>
          otherwise.</dd></dl>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletRequest.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletRequest</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.492">toHttp</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request)</pre>
 <div class="block">A convenience method that merely casts the incoming <code>ServletRequest</code> to an
  <code>HttpServletRequest</code>:
  <p/>
  <code>return (HttpServletRequest)request;</code>
  <p/>
  Logic could be changed in the future for logging or throwing an meaningful exception in
  non HTTP request environments (e.g. Portlet API).</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the incoming ServletRequest</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the <code>request</code> argument casted to an <code>HttpServletRequest</code>.</dd></dl>
 </li>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpServletResponse.html?is-external=true" title="class or interface in javax.servlet.http">HttpServletResponse</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.508">toHttp</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response)</pre>
 <div class="block">A convenience method that merely casts the incoming <code>ServletResponse</code> to an
  <code>HttpServletResponse</code>:
  <p/>
  <code>return (HttpServletResponse)response;</code>
  <p/>
  Logic could be changed in the future for logging or throwing an meaningful exception in
  non HTTP request environments (e.g. Portlet API).</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>response</code> - the outgoing ServletResponse</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the <code>response</code> argument casted to an <code>HttpServletResponse</code>.</dd></dl>
 </li>
 </ul>
 <a name="issueRedirect(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String, java.util.Map, boolean, boolean)">
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 <pre>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.523">issueRedirect</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                  <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                  <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url,
                  <a href="http://java.sun.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&nbsp;queryParams,
                  boolean&nbsp;contextRelative,
                  boolean&nbsp;http10Compatible)
                           throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Redirects the current request to a new URL based on the given parameters.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the servlet request.</dd><dd><code>response</code> - the servlet response.</dd><dd><code>url</code> - the URL to redirect the user to.</dd><dd><code>queryParams</code> - a map of parameters that should be set as request parameters for the new request.</dd><dd><code>contextRelative</code> - true if the URL is relative to the servlet context path, or false if the URL is absolute.</dd><dd><code>http10Compatible</code> - whether to stay compatible with HTTP 1.0 clients.</dd>
 <dt><span class="strong">Throws:</span></dt>
 <dd><code><a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if thrown by response methods.</dd></dl>
 </li>
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 <a name="issueRedirect(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String)">
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                  <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                  <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url)
                           throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Redirects the current request to a new URL based on the given parameters and default values
  for unspecified parameters.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the servlet request.</dd><dd><code>response</code> - the servlet response.</dd><dd><code>url</code> - the URL to redirect the user to.</dd>
 <dt><span class="strong">Throws:</span></dt>
 <dd><code><a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if thrown by response methods.</dd></dl>
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                  <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                  <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url,
                  <a href="http://java.sun.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&nbsp;queryParams)
                           throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Redirects the current request to a new URL based on the given parameters and default values
  for unspecified parameters.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the servlet request.</dd><dd><code>response</code> - the servlet response.</dd><dd><code>url</code> - the URL to redirect the user to.</dd><dd><code>queryParams</code> - a map of parameters that should be set as request parameters for the new request.</dd>
 <dt><span class="strong">Throws:</span></dt>
 <dd><code><a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if thrown by response methods.</dd></dl>
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 <pre>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.566">issueRedirect</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                  <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                  <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url,
                  <a href="http://java.sun.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&nbsp;queryParams,
                  boolean&nbsp;contextRelative)
                           throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Redirects the current request to a new URL based on the given parameters and default values
  for unspecified parameters.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the servlet request.</dd><dd><code>response</code> - the servlet response.</dd><dd><code>url</code> - the URL to redirect the user to.</dd><dd><code>queryParams</code> - a map of parameters that should be set as request parameters for the new request.</dd><dd><code>contextRelative</code> - true if the URL is relative to the servlet context path, or false if the URL is absolute.</dd>
 <dt><span class="strong">Throws:</span></dt>
 <dd><code><a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if thrown by response methods.</dd></dl>
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 <pre>public static&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.580">isTrue</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
              <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;paramName)</pre>
 <div class="block"><p>Checks to see if a request param is considered true using a loose matching strategy for
  general values that indicate that something is true or enabled, etc.</p>
  <p/>
  <p>Values that are considered "true" include (case-insensitive): true, t, 1, enabled, y, yes, on.</p></div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the servlet request</dd><dd><code>paramName</code> - @return true if the param value is considered true or false if it isn't.</dd>
 <dt><span class="strong">Returns:</span></dt><dd>true if the given parameter is considered "true" - false otherwise.</dd></dl>
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 <pre>public static&nbsp;<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.600">getCleanParam</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                    <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;paramName)</pre>
 <div class="block">Convenience method that returns a request parameter value, first running it through
  <a href="../../../../../org/apache/shiro/util/StringUtils.html#clean(java.lang.String)"><code>StringUtils.clean(String)</code></a>.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the servlet request.</dd><dd><code>paramName</code> - the parameter name.</dd>
 <dt><span class="strong">Returns:</span></dt><dd>the clean param value, or null if the param does not exist or is empty.</dd></dl>
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 <pre>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/shiro/web/util/WebUtils.html#line.651">redirectToSavedRequest</a>(<a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html?is-external=true" title="class or interface in javax.servlet">ServletRequest</a>&nbsp;request,
                           <a href="http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletResponse.html?is-external=true" title="class or interface in javax.servlet">ServletResponse</a>&nbsp;response,
                           <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fallbackUrl)
                                    throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Redirects the to the request url from a previously
  <a href="../../../../../org/apache/shiro/web/util/WebUtils.html#saveRequest(javax.servlet.ServletRequest)"><code>saved</code></a> request, or if there is no saved request, redirects the
  end user to the specified <code>fallbackUrl</code>.  If there is no saved request or fallback url, this method
  throws an <a href="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang"><code>IllegalStateException</code></a>.
  <p/>
  This method is primarily used to support a common login scenario - if an unauthenticated user accesses a
  page that requires authentication, it is expected that request is
  <a href="../../../../../org/apache/shiro/web/util/WebUtils.html#saveRequest(javax.servlet.ServletRequest)"><code>saved</code></a> first and then redirected to the login page. Then,
  after a successful login, this method can be called to redirect them back to their originally requested URL, a
  nice usability feature.</div>
 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>request</code> - the incoming request</dd><dd><code>response</code> - the outgoing response</dd><dd><code>fallbackUrl</code> - the fallback url to redirect to if there is no saved request available.</dd>
 <dt><span class="strong">Throws:</span></dt>
 <dd><code><a href="http://java.sun.com/javase/6/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if there is no saved request and the <code>fallbackUrl</code> is <code>null</code>.</dd>
 <dd><code><a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if there is an error redirecting</dd><dt><span class="strong">Since:</span></dt>
   <dd>1.0</dd></dl>
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