📄 servlet.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc (build 1.4.2_09) on Fri Sep 23 09:41:10 EDT 2005 -->
<TITLE>
Servlet (Servlet API Documentation)
</TITLE>
<META NAME="keywords" CONTENT="javax.servlet.Servlet interface">
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style">
<SCRIPT type="text/javascript">
function windowTitle()
{
parent.document.title="Servlet (Servlet API Documentation)";
}
</SCRIPT>
</HEAD>
<BODY BGCOLOR="white" onload="windowTitle();">
<!-- ========= START OF TOP NAVBAR ======= -->
<A NAME="navbar_top"><!-- --></A>
<A HREF="#skip-navbar_top" title="Skip navigation links"></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
<TR>
<TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_top_firstrow"><!-- --></A>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
<TR ALIGN="center" VALIGN="top">
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="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="class-use/Servlet.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="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/RequestDispatcher.html" title="interface in javax.servlet"><B>PREV CLASS</B></A>
<A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet"><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="Servlet.html" target="_top"><B>NO FRAMES</B></A>
<SCRIPT type="text/javascript">
<!--
if(window==top) {
document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>');
}
//-->
</SCRIPT>
<NOSCRIPT>
<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>
</NOSCRIPT>
</FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
SUMMARY: NESTED | 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>
<A NAME="skip-navbar_top"></A>
<!-- ========= END OF TOP NAVBAR ========= -->
<HR>
<!-- ======== START OF CLASS DATA ======== -->
<H2>
<FONT SIZE="-1">
javax.servlet</FONT>
<BR>
Interface Servlet</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../javax/servlet/GenericServlet.html" title="class in javax.servlet">GenericServlet</A></DD>
</DL>
<HR>
<DL>
<DT>public interface <B>Servlet</B></DL>
<P>
Defines methods that all servlets must implement.
<p>A servlet is a small Java program that runs within a Web server.
Servlets receive and respond to requests from Web clients,
usually across HTTP, the HyperText Transfer Protocol.
<p>To implement this interface, you can write a generic servlet
that extends
<code>javax.servlet.GenericServlet</code> or an HTTP servlet that
extends <code>javax.servlet.http.HttpServlet</code>.
<p>This interface defines methods to initialize a servlet,
to service requests, and to remove a servlet from the server.
These are known as life-cycle methods and are called in the
following sequence:
<ol>
<li>The servlet is constructed, then initialized with the <code>init</code> method.
<li>Any calls from clients to the <code>service</code> method are handled.
<li>The servlet is taken out of service, then destroyed with the
<code>destroy</code> method, then garbage collected and finalized.
</ol>
<p>In addition to the life-cycle methods, this interface
provides the <code>getServletConfig</code> method, which the servlet
can use to get any startup information, and the <code>getServletInfo</code>
method, which allows the servlet to return basic information about itself,
such as author, version, and copyright.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Version$</DD>
<DT><B>Author:</B></DT>
<DD>Various</DD>
<DT><B>See Also:</B><DD><A HREF="../../javax/servlet/GenericServlet.html" title="class in javax.servlet"><CODE>GenericServlet</CODE></A>,
<A HREF="../../javax/servlet/http/HttpServlet.html" title="class in javax.servlet.http"><CODE>HttpServlet</CODE></A></DL>
<HR>
<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
<!-- =========== FIELD SUMMARY =========== -->
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<!-- ========== 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> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/Servlet.html#destroy()">destroy</A></B>()</CODE>
<BR>
Called by the servlet container to indicate to a servlet that the
servlet is being taken out of service.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/Servlet.html#getServletConfig()">getServletConfig</A></B>()</CODE>
<BR>
Returns a <A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet"><CODE>ServletConfig</CODE></A> object, which contains
initialization and startup parameters for this servlet.</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/Servlet.html#getServletInfo()">getServletInfo</A></B>()</CODE>
<BR>
Returns information about the servlet, such
as author, version, and copyright.</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/Servlet.html#init(javax.servlet.ServletConfig)">init</A></B>(<A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A> config)</CODE>
<BR>
Called by the servlet container to indicate to a servlet that the
servlet is being placed into service.</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/Servlet.html#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)">service</A></B>(<A HREF="../../javax/servlet/ServletRequest.html" title="interface in javax.servlet">ServletRequest</A> req,
<A HREF="../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</A> res)</CODE>
<BR>
Called by the servlet container to allow the servlet to respond to
a request.</TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<!-- ============ METHOD DETAIL ========== -->
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -