📄 pagecontext.html
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</TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#PageContext()">PageContext</A></B>()</CODE><BR> Sole constructor.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#forward(java.lang.String)">forward</A></B>(java.lang.String relativeUrlPath)</CODE><BR> This method is used to re-direct, or "forward" the current ServletRequest and ServletResponse to another active component in the application.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/servlet/jsp/ErrorData.html" title="class in javax.servlet.jsp">ErrorData</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getErrorData()">getErrorData</A></B>()</CODE><BR> Provides convenient access to error information.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract java.lang.Exception</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getException()">getException</A></B>()</CODE><BR> The current value of the exception object (an Exception).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getPage()">getPage</A></B>()</CODE><BR> The current value of the page object (In a Servlet environment, this is an instance of javax.servlet.Servlet).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract javax.servlet.ServletRequest</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getRequest()">getRequest</A></B>()</CODE><BR> The current value of the request object (a ServletRequest).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract javax.servlet.ServletResponse</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getResponse()">getResponse</A></B>()</CODE><BR> The current value of the response object (a ServletResponse).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract javax.servlet.ServletConfig</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getServletConfig()">getServletConfig</A></B>()</CODE><BR> The ServletConfig instance.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract javax.servlet.ServletContext</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getServletContext()">getServletContext</A></B>()</CODE><BR> The ServletContext instance.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract javax.servlet.http.HttpSession</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#getSession()">getSession</A></B>()</CODE><BR> The current value of the session object (an HttpSession).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#handlePageException(java.lang.Exception)">handlePageException</A></B>(java.lang.Exception e)</CODE><BR> This method is intended to process an unhandled 'page' level exception by forwarding the exception to the specified error page for this JSP.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#handlePageException(java.lang.Throwable)">handlePageException</A></B>(java.lang.Throwable t)</CODE><BR> This method is intended to process an unhandled 'page' level exception by forwarding the exception to the specified error page for this JSP.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#include(java.lang.String)">include</A></B>(java.lang.String relativeUrlPath)</CODE><BR> Causes the resource specified to be processed as part of the current ServletRequest and ServletResponse being processed by the calling Thread.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#include(java.lang.String, boolean)">include</A></B>(java.lang.String relativeUrlPath, boolean flush)</CODE><BR> Causes the resource specified to be processed as part of the current ServletRequest and ServletResponse being processed by the calling Thread.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#initialize(javax.servlet.Servlet, javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.lang.String, boolean, int, boolean)">initialize</A></B>(javax.servlet.Servlet servlet, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, java.lang.String errorPageURL, boolean needsSession, int bufferSize, boolean autoFlush)</CODE><BR> The initialize method is called to initialize an uninitialized PageContext so that it may be used by a JSP Implementation class to service an incoming request and response within it's _jspService() method.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/servlet/jsp/tagext/BodyContent.html" title="class in javax.servlet.jsp.tagext">BodyContent</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#pushBody()">pushBody</A></B>()</CODE><BR> Return a new BodyContent object, save the current "out" JspWriter, and update the value of the "out" attribute in the page scope attribute namespace of the PageContext.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/jsp/PageContext.html#release()">release</A></B>()</CODE><BR> This method shall "reset" the internal state of a PageContext, releasing all internal references, and preparing the PageContext for potential reuse by a later invocation of initialize().</TD></TR></TABLE> <A NAME="methods_inherited_from_class_javax.servlet.jsp.JspContext"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class javax.servlet.jsp.<A HREF="../../../javax/servlet/jsp/JspContext.html" title="class in javax.servlet.jsp">JspContext</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/servlet/jsp/JspContext.html#findAttribute(java.lang.String)">findAttribute</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#getAttribute(java.lang.String)">getAttribute</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#getAttribute(java.lang.String, int)">getAttribute</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#getAttributeNamesInScope(int)">getAttributeNamesInScope</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#getAttributesScope(java.lang.String)">getAttributesScope</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#getExpressionEvaluator()">getExpressionEvaluator</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#getOut()">getOut</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#getVariableResolver()">getVariableResolver</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#popBody()">popBody</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#pushBody(java.io.Writer)">pushBody</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#removeAttribute(java.lang.String)">removeAttribute</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#removeAttribute(java.lang.String, int)">removeAttribute</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#setAttribute(java.lang.String, java.lang.Object)">setAttribute</A>, <A HREF="../../../javax/servlet/jsp/JspContext.html#setAttribute(java.lang.String, java.lang.Object, int)">setAttribute</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Field Detail</B></FONT></TD></TR></TABLE><A NAME="PAGE_SCOPE"><!-- --></A><H3>PAGE_SCOPE</H3><PRE>public static final int <B>PAGE_SCOPE</B></PRE><DL><DD>Page scope: (this is the default) the named reference remains available in this PageContext until the return from the current Servlet.service() invocation.<P><DL><DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.servlet.jsp.PageContext.PAGE_SCOPE">Constant Field Values</A></DL></DL><HR><A NAME="REQUEST_SCOPE"><!-- --></A><H3>REQUEST_SCOPE</H3><PRE>public static final int <B>REQUEST_SCOPE</B></PRE><DL><DD>Request scope: the named reference remains available from the ServletRequest associated with the Servlet until the current request is completed.<P><DL><DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.servlet.jsp.PageContext.REQUEST_SCOPE">Constant Field Values</A></DL></DL><HR><A NAME="SESSION_SCOPE"><!-- --></A><H3>SESSION_SCOPE</H3><PRE>public static final int <B>SESSION_SCOPE</B></PRE><DL><DD>Session scope (only valid if this page participates in a session): the named reference remains available from the HttpSession (if any) associated with the Servlet until the HttpSession is invalidated.<P><DL><DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.servlet.jsp.PageContext.SESSION_SCOPE">Constant Field Values</A></DL></DL><HR><A NAME="APPLICATION_SCOPE"><!-- --></A><H3>APPLICATION_SCOPE</H3><PRE>public static final int <B>APPLICATION_SCOPE</B></PRE><DL><DD>Application scope: named reference remains available in the ServletContext until it is reclaimed.<P><DL><DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.servlet.jsp.PageContext.APPLICATION_SCOPE">Constant Field Values</A></DL></DL><HR><A NAME="PAGE"><!-- --></A><H3>PAGE</H3><PRE>public static final java.lang.String <B>PAGE</B></PRE><DL><DD>Name used to store the Servlet in this PageContext's nametables.<P><DL><DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.servlet.jsp.PageContext.PAGE">Constant Field Values</A></DL></DL><HR><A NAME="PAGECONTEXT"><!-- --></A><H3>PAGECONTEXT</H3><PRE>public static final java.lang.String <B>PAGECONTEXT</B></PRE><DL><DD>Name used to store this PageContext in it's own name table.<P><DL><DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.servlet.jsp.PageContext.PAGECONTEXT">Constant Field Values</A></DL></DL><HR><A NAME="REQUEST"><!-- --></A><H3>REQUEST</H3><PRE>public static final java.lang.String <B>REQUEST</B></PRE><DL><DD>Name used to store ServletRequest in PageContext name table.<P><DL>⌨️ 快捷键说明
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