📄 servletrequest.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Fri Apr 04 16:56:23 PST 2003 --><TITLE>: Interface ServletRequest</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT ID="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT ID="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT ID="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT ID="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT ID="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT ID="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../javax/servlet/ServletContextListener.html"><B>PREV CLASS</B></A> <A HREF="../../javax/servlet/ServletRequestAttributeListener.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="ServletRequest.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.servlet</FONT><BR>Interface ServletRequest</H2><DL><DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../javax/servlet/http/HttpServletRequest.html">HttpServletRequest</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../javax/servlet/ServletRequestWrapper.html">ServletRequestWrapper</A></DD></DL><HR><DL><DT>public interface <B>ServletRequest</B></DL><P>Defines an object to provide client request information to a servlet. The servlet container creates a <code>ServletRequest</code> object and passes it as an argument to the servlet's <code>service</code> method. <p>A <code>ServletRequest</code> object provides data including parameter name and values, attributes, and an input stream. Interfaces that extend <code>ServletRequest</code> can provide additional protocol-specific data (for example, HTTP data is provided by <A HREF="../../javax/servlet/http/HttpServletRequest.html"><CODE>HttpServletRequest</CODE></A>.<P><DL><DT><B>See Also: </B><DD><A HREF="../../javax/servlet/http/HttpServletRequest.html"><CODE>HttpServletRequest</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><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> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getAttribute(java.lang.String)">getAttribute</A></B>(java.lang.String name)</CODE><BR> Returns the value of the named attribute as an <code>Object</code>, or <code>null</code> if no attribute of the given name exists.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getAttributeNames()">getAttributeNames</A></B>()</CODE><BR> Returns an <code>Enumeration</code> containing the names of the attributes available to this request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getCharacterEncoding()">getCharacterEncoding</A></B>()</CODE><BR> Returns the name of the character encoding used in the body of this request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getContentLength()">getContentLength</A></B>()</CODE><BR> Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getContentType()">getContentType</A></B>()</CODE><BR> Returns the MIME type of the body of the request, or <code>null</code> if the type is not known.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../javax/servlet/ServletInputStream.html">ServletInputStream</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getInputStream()">getInputStream</A></B>()</CODE><BR> Retrieves the body of the request as binary data using a <A HREF="../../javax/servlet/ServletInputStream.html"><CODE>ServletInputStream</CODE></A>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getLocalAddr()">getLocalAddr</A></B>()</CODE><BR> Returns the Internet Protocol (IP) address of the interface on which the request was received.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Locale</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getLocale()">getLocale</A></B>()</CODE><BR> Returns the preferred <code>Locale</code> that the client will accept content in, based on the Accept-Language header.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getLocales()">getLocales</A></B>()</CODE><BR> Returns an <code>Enumeration</code> of <code>Locale</code> objects indicating, in decreasing order starting with the preferred locale, the locales that are acceptable to the client based on the Accept-Language header.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getLocalName()">getLocalName</A></B>()</CODE><BR> Returns the host name of the Internet Protocol (IP) interface on which the request was received.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getLocalPort()">getLocalPort</A></B>()</CODE><BR> Returns the Internet Protocol (IP) port number of the interface on which the request was received.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getParameter(java.lang.String)">getParameter</A></B>(java.lang.String name)</CODE><BR> Returns the value of a request parameter as a <code>String</code>, or <code>null</code> if the parameter does not exist.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Map</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getParameterMap()">getParameterMap</A></B>()</CODE><BR> Returns a java.util.Map of the parameters of this request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getParameterNames()">getParameterNames</A></B>()</CODE><BR> Returns an <code>Enumeration</code> of <code>String</code> objects containing the names of the parameters contained in this request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getParameterValues(java.lang.String)">getParameterValues</A></B>(java.lang.String name)</CODE><BR> Returns an array of <code>String</code> objects containing all of the values the given request parameter has, or <code>null</code> if the parameter does not exist.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getProtocol()">getProtocol</A></B>()</CODE><BR> Returns the name and version of the protocol the request uses in the form <i>protocol/majorVersion.minorVersion</i>, for example, HTTP/1.1.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.io.BufferedReader</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getReader()">getReader</A></B>()</CODE><BR> Retrieves the body of the request as character data using a <code>BufferedReader</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getRealPath(java.lang.String)">getRealPath</A></B>(java.lang.String path)</CODE><BR> <B>Deprecated.</B> <I>As of Version 2.1 of the Java Servlet API, use <A HREF="../../javax/servlet/ServletContext.html#getRealPath(java.lang.String)"><CODE>ServletContext.getRealPath(java.lang.String)</CODE></A> instead.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getRemoteAddr()">getRemoteAddr</A></B>()</CODE><BR> Returns the Internet Protocol (IP) address of the client or last proxy that sent the request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getRemoteHost()">getRemoteHost</A></B>()</CODE><BR> Returns the fully qualified name of the client or the last proxy that sent the request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getRemotePort()">getRemotePort</A></B>()</CODE><BR> Returns the Internet Protocol (IP) source port of the client or last proxy that sent the request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../javax/servlet/RequestDispatcher.html">RequestDispatcher</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getRequestDispatcher(java.lang.String)">getRequestDispatcher</A></B>(java.lang.String path)</CODE><BR> Returns a <A HREF="../../javax/servlet/RequestDispatcher.html"><CODE>RequestDispatcher</CODE></A> object that acts as a wrapper for the resource located at the given path.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getScheme()">getScheme</A></B>()</CODE>⌨️ 快捷键说明
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