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struts api,学习使用struts必备的文档

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<A NAME="isCancelled(javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
isCancelled</H3>
<PRE>
protected boolean <B>isCancelled</B>(javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD><p>Returns <code>true</code> if the current form's cancel button was
 pressed.  This method will check if the <code>Globals.CANCEL_KEY</code>
 request attribute has been set, which normally occurs if the cancel
 button generated by <strong>CancelTag</strong> was pressed by the user
 in the current request.  If <code>true</code>, validation performed
 by an <strong>ActionForm</strong>'s <code>validate()</code> method
 will have been skipped by the controller servlet.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing<DT><B>See Also: </B><DD><A HREF="../../../../org/apache/struts/taglib/html/CancelTag.html"><CODE>CancelTag</CODE></A></DL>
</DD>
</DL>
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<A NAME="isTokenValid(javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
isTokenValid</H3>
<PRE>
protected boolean <B>isTokenValid</B>(javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD><p>Return <code>true</code> if there is a transaction token stored in
 the user's current session, and the value submitted as a request
 parameter with this action matches it. Returns <code>false</code>
 under any of the following circumstances:</p>
 <ul>
 <li>No session associated with this request</li>
 <li>No transaction token saved in the session</li>
 <li>No transaction token included as a request parameter</li>
 <li>The included transaction token value does not match the
     transaction token in the user's session</li>
 </ul><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing</DL>
</DD>
</DL>
<HR>

<A NAME="isTokenValid(javax.servlet.http.HttpServletRequest, boolean)"><!-- --></A><H3>
isTokenValid</H3>
<PRE>
protected boolean <B>isTokenValid</B>(javax.servlet.http.HttpServletRequest&nbsp;request,
                               boolean&nbsp;reset)</PRE>
<DL>
<DD><p>Return <code>true</code> if there is a transaction token stored in
 the user's current session, and the value submitted as a request
 parameter with this action matches it. Returns <code>false</code> under
 any of the following circumstances:</p>
 <ul>
 <li>No session associated with this request</li>
 <li>No transaction token saved in the session</li>
 <li>No transaction token included as a request parameter</li>
 <li>The included transaction token value does not match the
     transaction token in the user's session</li>
 </ul><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing<DD><CODE>reset</CODE> - Should we reset the token after checking it?</DL>
</DD>
</DL>
<HR>

<A NAME="resetToken(javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
resetToken</H3>
<PRE>
protected void <B>resetToken</B>(javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD><p>Reset the saved transaction token in the user's session. This
 indicates that transactional token checking will not be needed
 on the next request that is submitted.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing</DL>
</DD>
</DL>
<HR>

<A NAME="saveErrors(javax.servlet.http.HttpServletRequest, org.apache.struts.action.ActionErrors)"><!-- --></A><H3>
saveErrors</H3>
<PRE>
protected void <B>saveErrors</B>(javax.servlet.http.HttpServletRequest&nbsp;request,
                          <A HREF="../../../../org/apache/struts/action/ActionErrors.html">ActionErrors</A>&nbsp;errors)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>Use saveErrors(HttpServletRequest, ActionMessages) instead.
 This will be removed after Struts 1.2.</I>
<P>
<DD><p>Save the specified error messages keys into the appropriate request
 attribute for use by the &lt;html:errors&gt; tag, if any messages
 are required. Otherwise, ensure that the request attribute is not
 created.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing<DD><CODE>errors</CODE> - Error messages object</DL>
</DD>
</DL>
<HR>

<A NAME="saveErrors(javax.servlet.http.HttpServletRequest, org.apache.struts.action.ActionMessages)"><!-- --></A><H3>
saveErrors</H3>
<PRE>
protected void <B>saveErrors</B>(javax.servlet.http.HttpServletRequest&nbsp;request,
                          <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;errors)</PRE>
<DL>
<DD><p>Save the specified error messages keys into the appropriate request
 attribute for use by the &lt;html:errors&gt; tag, if any messages
 are required. Otherwise, ensure that the request attribute is not
 created.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing<DD><CODE>errors</CODE> - Error messages object<DT><B>Since: </B><DD>Struts 1.2</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="saveMessages(javax.servlet.http.HttpServletRequest, org.apache.struts.action.ActionMessages)"><!-- --></A><H3>
saveMessages</H3>
<PRE>
protected void <B>saveMessages</B>(javax.servlet.http.HttpServletRequest&nbsp;request,
                            <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;messages)</PRE>
<DL>
<DD><p>Save the specified messages keys into the appropriate request
 attribute for use by the &lt;html:messages&gt; tag (if
 messages="true" is set), if any messages are required. Otherwise,
 ensure that the request attribute is not created.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing.<DD><CODE>messages</CODE> - The messages to save. <code>null</code> or empty
 messages removes any existing ActionMessages in the request.<DT><B>Since: </B><DD>Struts 1.1</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="saveMessages(javax.servlet.http.HttpSession, org.apache.struts.action.ActionMessages)"><!-- --></A><H3>
saveMessages</H3>
<PRE>
protected void <B>saveMessages</B>(javax.servlet.http.HttpSession&nbsp;session,
                            <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;messages)</PRE>
<DL>
<DD><p>Save the specified messages keys into the appropriate session
 attribute for use by the &lt;html:messages&gt; tag (if
 messages="true" is set), if any messages are required. Otherwise,
 ensure that the session attribute is not created.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>session</CODE> - The session to save the messages in.<DD><CODE>messages</CODE> - The messages to save. <code>null</code> or empty
 messages removes any existing ActionMessages in the session.<DT><B>Since: </B><DD>Struts 1.2</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="saveErrors(javax.servlet.http.HttpSession, org.apache.struts.action.ActionMessages)"><!-- --></A><H3>
saveErrors</H3>
<PRE>
protected void <B>saveErrors</B>(javax.servlet.http.HttpSession&nbsp;session,
                          <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;errors)</PRE>
<DL>
<DD><p>Save the specified error messages keys into the appropriate session
 attribute for use by the &lt;html:messages&gt; tag (if messages="false") 
 or &lt;html:errors&gt;, if any error messages are required. Otherwise, 
 ensure that the session attribute is empty.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>session</CODE> - The session to save the error messages in.<DD><CODE>errors</CODE> - The error messages to save. <code>null</code> or empty
 messages removes any existing error ActionMessages in the session.<DT><B>Since: </B><DD>Struts 1.2.7</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="saveToken(javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
saveToken</H3>
<PRE>
protected void <B>saveToken</B>(javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD><p>Save a new transaction token in the user's current session, creating
 a new session if necessary.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The servlet request we are processing</DL>
</DD>
</DL>
<HR>

<A NAME="setLocale(javax.servlet.http.HttpServletRequest, java.util.Locale)"><!-- --></A><H3>
setLocale</H3>
<PRE>
protected void <B>setLocale</B>(javax.servlet.http.HttpServletRequest&nbsp;request,
                         java.util.Locale&nbsp;locale)</PRE>
<DL>
<DD><p>Set the user's currently selected <code>Locale</code> into their
 <code>HttpSession</code>.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - The request we are processing<DD><CODE>locale</CODE> - The user's selected Locale to be set, or null
  to select the server's default Locale</DL>
</DD>
</DL>
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