📄 genericservlet.html
字号:
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/Servlet.html#destroy()">destroy</A></CODE> in interface <CODE><A HREF="../../javax/servlet/Servlet.html" title="interface in javax.servlet">Servlet</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getInitParameter(java.lang.String)"><!-- --></A><H3>
getInitParameter</H3>
<PRE>
public java.lang.String <B>getInitParameter</B>(java.lang.String name)</PRE>
<DL>
<DD>Returns a <code>String</code> containing the value of the named
initialization parameter, or <code>null</code> if the parameter does
not exist. See <A HREF="../../javax/servlet/ServletConfig.html#getInitParameter(java.lang.String)"><CODE>ServletConfig.getInitParameter(java.lang.String)</CODE></A>.
<p>This method is supplied for convenience. It gets the
value of the named parameter from the servlet's
<code>ServletConfig</code> object.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/ServletConfig.html#getInitParameter(java.lang.String)">getInitParameter</A></CODE> in interface <CODE><A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - a <code>String</code> specifying the name
of the initialization parameter
<DT><B>Returns:</B><DD>String a <code>String</code> containing the value
of the initialization parameter</DL>
</DD>
</DL>
<HR>
<A NAME="getInitParameterNames()"><!-- --></A><H3>
getInitParameterNames</H3>
<PRE>
public java.util.Enumeration <B>getInitParameterNames</B>()</PRE>
<DL>
<DD>Returns the names of the servlet's initialization parameters
as an <code>Enumeration</code> of <code>String</code> objects,
or an empty <code>Enumeration</code> if the servlet has no
initialization parameters. See <A HREF="../../javax/servlet/ServletConfig.html#getInitParameterNames()"><CODE>ServletConfig.getInitParameterNames()</CODE></A>.
<p>This method is supplied for convenience. It gets the
parameter names from the servlet's <code>ServletConfig</code> object.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/ServletConfig.html#getInitParameterNames()">getInitParameterNames</A></CODE> in interface <CODE><A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>Enumeration an enumeration of <code>String</code>
objects containing the names of
the servlet's initialization parameters</DL>
</DD>
</DL>
<HR>
<A NAME="getServletConfig()"><!-- --></A><H3>
getServletConfig</H3>
<PRE>
public <A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A> <B>getServletConfig</B>()</PRE>
<DL>
<DD>Returns this servlet's <A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet"><CODE>ServletConfig</CODE></A> object.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/Servlet.html#getServletConfig()">getServletConfig</A></CODE> in interface <CODE><A HREF="../../javax/servlet/Servlet.html" title="interface in javax.servlet">Servlet</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>ServletConfig the <code>ServletConfig</code> object
that initialized this servlet<DT><B>See Also:</B><DD><A HREF="../../javax/servlet/Servlet.html#init(javax.servlet.ServletConfig)"><CODE>Servlet.init(javax.servlet.ServletConfig)</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="getServletContext()"><!-- --></A><H3>
getServletContext</H3>
<PRE>
public <A HREF="../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</A> <B>getServletContext</B>()</PRE>
<DL>
<DD>Returns a reference to the <A HREF="../../javax/servlet/ServletContext.html" title="interface in javax.servlet"><CODE>ServletContext</CODE></A> in which this servlet
is running. See <A HREF="../../javax/servlet/ServletConfig.html#getServletContext()"><CODE>ServletConfig.getServletContext()</CODE></A>.
<p>This method is supplied for convenience. It gets the
context from the servlet's <code>ServletConfig</code> object.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/ServletConfig.html#getServletContext()">getServletContext</A></CODE> in interface <CODE><A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>ServletContext the <code>ServletContext</code> object
passed to this servlet by the <code>init</code>
method<DT><B>See Also:</B><DD><A HREF="../../javax/servlet/ServletContext.html" title="interface in javax.servlet"><CODE>ServletContext</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="getServletInfo()"><!-- --></A><H3>
getServletInfo</H3>
<PRE>
public java.lang.String <B>getServletInfo</B>()</PRE>
<DL>
<DD>Returns information about the servlet, such as
author, version, and copyright.
By default, this method returns an empty string. Override this method
to have it return a meaningful value. See <A HREF="../../javax/servlet/Servlet.html#getServletInfo()"><CODE>Servlet.getServletInfo()</CODE></A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/Servlet.html#getServletInfo()">getServletInfo</A></CODE> in interface <CODE><A HREF="../../javax/servlet/Servlet.html" title="interface in javax.servlet">Servlet</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>String information about this servlet, by default an
empty string</DL>
</DD>
</DL>
<HR>
<A NAME="init(javax.servlet.ServletConfig)"><!-- --></A><H3>
init</H3>
<PRE>
public void <B>init</B>(<A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A> config)
throws <A HREF="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</A></PRE>
<DL>
<DD>Called by the servlet container to indicate to a servlet that the
servlet is being placed into service. See <A HREF="../../javax/servlet/Servlet.html#init(javax.servlet.ServletConfig)"><CODE>Servlet.init(javax.servlet.ServletConfig)</CODE></A>.
<p>This implementation stores the <A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet"><CODE>ServletConfig</CODE></A>
object it receives from the servlet container for later use.
When overriding this form of the method, call
<code>super.init(config)</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/Servlet.html#init(javax.servlet.ServletConfig)">init</A></CODE> in interface <CODE><A HREF="../../javax/servlet/Servlet.html" title="interface in javax.servlet">Servlet</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>config</CODE> - the <code>ServletConfig</code> object
that contains configutation
information for this servlet
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</A></CODE> - if an exception occurs that
interrupts the servlet's normal
operation<DT><B>See Also:</B><DD><A HREF="../../javax/servlet/UnavailableException.html" title="class in javax.servlet"><CODE>UnavailableException</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="init()"><!-- --></A><H3>
init</H3>
<PRE>
public void <B>init</B>()
throws <A HREF="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</A></PRE>
<DL>
<DD>A convenience method which can be overridden so that there's no need
to call <code>super.init(config)</code>.
<p>Instead of overriding <A HREF="../../javax/servlet/GenericServlet.html#init(javax.servlet.ServletConfig)"><CODE>init(ServletConfig)</CODE></A>, simply override
this method and it will be called by
<code>GenericServlet.init(ServletConfig config)</code>.
The <code>ServletConfig</code> object can still be retrieved via <A HREF="../../javax/servlet/GenericServlet.html#getServletConfig()"><CODE>getServletConfig()</CODE></A>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</A></CODE> - if an exception occurs that
interrupts the servlet's
normal operation</DL>
</DD>
</DL>
<HR>
<A NAME="log(java.lang.String)"><!-- --></A><H3>
log</H3>
<PRE>
public void <B>log</B>(java.lang.String msg)</PRE>
<DL>
<DD>Writes the specified message to a servlet log file, prepended by the
servlet's name. See <A HREF="../../javax/servlet/ServletContext.html#log(java.lang.String)"><CODE>ServletContext.log(String)</CODE></A>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>msg</CODE> - a <code>String</code> specifying
the message to be written to the log file</DL>
</DD>
</DL>
<HR>
<A NAME="log(java.lang.String, java.lang.Throwable)"><!-- --></A><H3>
log</H3>
<PRE>
public void <B>log</B>(java.lang.String message,
java.lang.Throwable t)</PRE>
<DL>
<DD>Writes an explanatory message and a stack trace
for a given <code>Throwable</code> exception
to the servlet log file, prepended by the servlet's name.
See <A HREF="../../javax/servlet/ServletContext.html#log(java.lang.String, java.lang.Throwable)"><CODE>ServletContext.log(String, Throwable)</CODE></A>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>message</CODE> - a <code>String</code> that describes
the error or exception<DD><CODE>t</CODE> - the <code>java.lang.Throwable</code> error
or exception</DL>
</DD>
</DL>
<HR>
<A NAME="service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)"><!-- --></A><H3>
service</H3>
<PRE>
public abstract void <B>service</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)
throws <A HREF="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</A>,
java.io.IOException</PRE>
<DL>
<DD>Called by the servlet container to allow the servlet to respond to
a request. See <A HREF="../../javax/servlet/Servlet.html#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)"><CODE>Servlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)</CODE></A>.
<p>This method is declared abstract so subclasses, such as
<code>HttpServlet</code>, must override it.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/Servlet.html#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)">service</A></CODE> in interface <CODE><A HREF="../../javax/servlet/Servlet.html" title="interface in javax.servlet">Servlet</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>req</CODE> - the <code>ServletRequest</code> object
that contains the client's request<DD><CODE>res</CODE> - the <code>ServletResponse</code> object
that will contain the servlet's response
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/servlet/ServletException.html" title="class in javax.servlet">ServletException</A></CODE> - if an exception occurs that
interferes with the servlet's
normal operation occurred
<DD><CODE>java.io.IOException</CODE> - if an input or output
exception occurs</DL>
</DD>
</DL>
<HR>
<A NAME="getServletName()"><!-- --></A><H3>
getServletName</H3>
<PRE>
public java.lang.String <B>getServletName</B>()</PRE>
<DL>
<DD>Returns the name of this servlet instance.
See <A HREF="../../javax/servlet/ServletConfig.html#getServletName()"><CODE>ServletConfig.getServletName()</CODE></A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../javax/servlet/ServletConfig.html#getServletName()">getServletName</A></CODE> in interface <CODE><A HREF="../../javax/servlet/ServletConfig.html" title="interface in javax.servlet">ServletConfig</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the name of this servlet instance</DL>
</DD>
</DL>
<!-- ========= END OF CLASS DATA ========= -->
<HR>
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<A NAME="navbar_bottom"><!-- --></A>
<A HREF="#skip-navbar_bottom" 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_bottom_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/GenericServlet.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">
PREV CLASS
<A HREF="../../javax/servlet/ServletContextAttributeEvent.html" title="class 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="GenericServlet.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 | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<A NAME="skip-navbar_bottom"></A>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
<HR>
Copyright © 1999-2002 The Apache Software Foundation. All Rights Reserved.
</BODY>
</HTML>
⌨️ 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 + -