genericservlet.html

servlet-2_4-pfd3-doc.zip 您上载的源码为何会被站长不采用或帐号被删除？

<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="destroy()"><!-- --></A><H3>
destroy</H3>
<PRE>
public void <B>destroy</B>()</PRE>
<DL>
<DD>Called by the servlet container to indicate to a servlet that the
 servlet is being taken out of service.  See <A HREF="../../javax/servlet/Servlet.html#destroy()"><CODE>Servlet.destroy()</CODE></A>.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/Servlet.html#destroy()">destroy</A> in interface <A HREF="../../javax/servlet/Servlet.html">Servlet</A></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&nbsp;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.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/ServletConfig.html#getInitParameter(java.lang.String)">getInitParameter</A> in interface <A HREF="../../javax/servlet/ServletConfig.html">ServletConfig</A></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 initalization 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.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/ServletConfig.html#getInitParameterNames()">getInitParameterNames</A> in interface <A HREF="../../javax/servlet/ServletConfig.html">ServletConfig</A></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">ServletConfig</A> <B>getServletConfig</B>()</PRE>
<DL>
<DD>Returns this servlet's <A HREF="../../javax/servlet/ServletConfig.html"><CODE>ServletConfig</CODE></A> object.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/Servlet.html#getServletConfig()">getServletConfig</A> in interface <A HREF="../../javax/servlet/Servlet.html">Servlet</A></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>ServletConfig 	the <code>ServletConfig</code> object
				that initialized this servlet</DL>
</DD>
</DL>
<HR>

<A NAME="getServletContext()"><!-- --></A><H3>
getServletContext</H3>
<PRE>
public <A HREF="../../javax/servlet/ServletContext.html">ServletContext</A> <B>getServletContext</B>()</PRE>
<DL>
<DD>Returns a reference to the <A HREF="../../javax/servlet/ServletContext.html"><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.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/ServletConfig.html#getServletContext()">getServletContext</A> in interface <A HREF="../../javax/servlet/ServletConfig.html">ServletConfig</A></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</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>.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/Servlet.html#getServletInfo()">getServletInfo</A> in interface <A HREF="../../javax/servlet/Servlet.html">Servlet</A></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">ServletConfig</A>&nbsp;config)
          throws <A HREF="../../javax/servlet/ServletException.html">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"><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>.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/Servlet.html#init(javax.servlet.ServletConfig)">init</A> in interface <A HREF="../../javax/servlet/Servlet.html">Servlet</A></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><A HREF="../../javax/servlet/ServletException.html">ServletException</A> - if an exception occurs that
					interrupts the servlet's normal
					operation<DT><B>See Also: </B><DD><A HREF="../../javax/servlet/UnavailableException.html"><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">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>.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><A HREF="../../javax/servlet/ServletException.html">ServletException</A> - 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&nbsp;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>.<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&nbsp;message,
                java.lang.Throwable&nbsp;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>.<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">ServletRequest</A>&nbsp;req,
                             <A HREF="../../javax/servlet/ServletResponse.html">ServletResponse</A>&nbsp;res)
                      throws <A HREF="../../javax/servlet/ServletException.html">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.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/Servlet.html#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)">service</A> in interface <A HREF="../../javax/servlet/Servlet.html">Servlet</A></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><A HREF="../../javax/servlet/ServletException.html">ServletException</A> - if an exception occurs that
					interferes with the servlet's
					normal operation occurred<DD>java.io.IOException - 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>.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../javax/servlet/ServletConfig.html#getServletName()">getServletName</A> in interface <A HREF="../../javax/servlet/ServletConfig.html">ServletConfig</A></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 NAVBAR ========== -->
<A NAME="navbar_bottom"><!-- --></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0">
<TR>
<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_bottom_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>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT ID="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT ID="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../deprecated-list.html"><FONT ID="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../index-all.html"><FONT ID="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../help-doc.html"><FONT ID="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>
  </TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>

<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
&nbsp;PREV CLASS&nbsp;
&nbsp;<A HREF="../../javax/servlet/ServletContextAttributeEvent.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>  &nbsp;
&nbsp;<A HREF="GenericServlet.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
  SUMMARY: &nbsp;INNER&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL: &nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<!-- =========== END OF NAVBAR =========== -->

<HR>

</BODY>
</HTML>