📄 servletrequest.html
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<TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></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> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/io/BufferedReader.html" title="class or interface in java.io">BufferedReader</A></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> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getRealPath(java.lang.String)">getRealPath</A></B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> 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> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></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> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></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" title="interface in javax.servlet">RequestDispatcher</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getRequestDispatcher(java.lang.String)">getRequestDispatcher</A></B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> path)</CODE><BR> Returns a <A HREF="../../javax/servlet/RequestDispatcher.html" title="interface in javax.servlet"><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> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getScheme()">getScheme</A></B>()</CODE><BR> Returns the name of the scheme used to make this request, for example, <code>http</code>, <code>https</code>, or <code>ftp</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#getServerName()">getServerName</A></B>()</CODE><BR> Returns the host name of the server to which the request was sent.</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#getServerPort()">getServerPort</A></B>()</CODE><BR> Returns the port number to which the request was sent.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#isSecure()">isSecure</A></B>()</CODE><BR> Returns a boolean indicating whether this request was made using a secure channel, such as HTTPS.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#removeAttribute(java.lang.String)">removeAttribute</A></B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</CODE><BR> Removes an attribute from this request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#setAttribute(java.lang.String, java.lang.Object)">setAttribute</A></B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name, <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> o)</CODE><BR> Stores an attribute in this request.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/servlet/ServletRequest.html#setCharacterEncoding(java.lang.String)">setCharacterEncoding</A></B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> env)</CODE><BR> Overrides the name of the character encoding used in the body of this request.</TD></TR></TABLE> <P><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Method Detail</B></FONT></TH></TR></TABLE><A NAME="getAttribute(java.lang.String)"><!-- --></A><H3>getAttribute</H3><PRE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getAttribute</B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</PRE><DL><DD>Returns the value of the named attribute as an <code>Object</code>, or <code>null</code> if no attribute of the given name exists. <p> Attributes can be set two ways. The servlet container may set attributes to make available custom information about a request. For example, for requests made using HTTPS, the attribute <code>javax.servlet.request.X509Certificate</code> can be used to retrieve information on the certificate of the client. Attributes can also be set programatically using <A HREF="../../javax/servlet/ServletRequest.html#setAttribute(java.lang.String, java.lang.Object)"><CODE>setAttribute(java.lang.String, java.lang.Object)</CODE></A>. This allows information to be embedded into a request before a <A HREF="../../javax/servlet/RequestDispatcher.html" title="interface in javax.servlet"><CODE>RequestDispatcher</CODE></A> call. <p>Attribute names should follow the same conventions as package names. This specification reserves names matching <code>java.*</code>, <code>javax.*</code>, and <code>sun.*</code>.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>name</CODE> - a <code>String</code> specifying the name of the attribute<DT><B>Returns:</B><DD>an <code>Object</code> containing the value of the attribute, or <code>null</code> if the attribute does not exist</DL></DD></DL><HR><A NAME="getAttributeNames()"><!-- --></A><H3>getAttributeNames</H3><PRE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/util/Enumeration.html" title="class or interface in java.util">Enumeration</A> <B>getAttributeNames</B>()</PRE><DL><DD>Returns an <code>Enumeration</code> containing the names of the attributes available to this request. This method returns an empty <code>Enumeration</code> if the request has no attributes available to it.<P><DD><DL><DT><B>Returns:</B><DD>an <code>Enumeration</code> of strings containing the names of the request's attributes</DL></DD></DL><HR><A NAME="getCharacterEncoding()"><!-- --></A><H3>getCharacterEncoding</H3><PRE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getCharacterEncoding</B>()</PRE><DL><DD>Returns the name of the character encoding used in the body of this request. This method returns <code>null</code> if the request does not specify a character encoding<P><DD><DL><DT><B>Returns:</B><DD>a <code>String</code> containing the name of the character encoding, or <code>null</code> if the request does not specify a character encoding</DL></DD></DL><HR><A NAME="setCharacterEncoding(java.lang.String)"><!-- --></A><H3>setCharacterEncoding</H3><PRE>void <B>setCharacterEncoding</B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> env) throws <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/io/UnsupportedEncodingException.html" title="class or interface in java.io">UnsupportedEncodingException</A></PRE><DL><DD>Overrides the name of the character encoding used in the body of this request. This method must be called prior to reading request parameters or reading input using getReader(). Otherwise, it has no effect.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>env</CODE> - <code>String</code> containing the name of the character encoding.<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/io/UnsupportedEncodingException.html" title="class or interface in java.io">UnsupportedEncodingException</A></CODE> - if this ServletRequest is still in a state where a character encoding may be set, but the specified encoding is invalid</DL></DD></DL><HR><A NAME="getContentLength()"><!-- --></A><H3>getContentLength</H3><PRE>int <B>getContentLength</B>()</PRE><DL><DD>Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known. For HTTP servlets, same as the value of the CGI variable CONTENT_LENGTH.<P><DD><DL><DT><B>Returns:</B><DD>an integer containing the length of the request body or -1 if the length is not known</DL></DD></DL><HR><A NAME="getContentType()"><!-- --></A><H3>getContentType</H3><PRE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getContentType</B>()</PRE><DL><DD>Returns the MIME type of the body of the request, or <code>null</code> if the type is not known. For HTTP servlets, same as the value of the CGI variable CONTENT_TYPE.<P><DD><DL><DT><B>Returns:</B><DD>a <code>String</code> containing the name of the MIME type of the request, or null if the type is not known</DL></DD></DL><HR><A NAME="getInputStream()"><!-- --></A><H3>getInputStream</H3><PRE>⌨️ 快捷键说明
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