funkman     2003/06/19 14:41:48

  Modified:    webapps/docs index.xml project.xml
  Added:       webapps/docs default-servlet.xml
  Log:
  Docs about the default servlet (instead of having the user discover the
  global web.xml)
  
  Revision  Changes    Path
  1.8       +3 -1      jakarta-tomcat-catalina/webapps/docs/index.xml
  
  Index: index.xml
  ===================================================================
  RCS file: /home/cvs/jakarta-tomcat-catalina/webapps/docs/index.xml,v
  retrieving revision 1.7
  retrieving revision 1.8
  diff -u -r1.7 -r1.8
  --- index.xml 14 May 2003 22:08:02 -0000      1.7
  +++ index.xml 19 Jun 2003 21:41:48 -0000      1.8
  @@ -86,7 +86,9 @@
       Configuring Tomcat 5 to run behind a proxy server (or a web server
       functioning as a proxy server).</li>
   <li><a href="mbeans-descriptor-howto.html"><strong>MBean Descriptor</strong></a> -
  -    Configuring MBean descriptors files for custom components.</li>   
  +    Configuring MBean descriptors files for custom components.</li>
  +<li><a href="default-servlet.html"><strong>Default Servlet</strong></a> -
  +    Configuring the default servlet and customizing directory listings.</li>
   </ol>
   
   </section>
  
  
  
  1.13      +7 -5      jakarta-tomcat-catalina/webapps/docs/project.xml
  
  Index: project.xml
  ===================================================================
  RCS file: /home/cvs/jakarta-tomcat-catalina/webapps/docs/project.xml,v
  retrieving revision 1.12
  retrieving revision 1.13
  diff -u -r1.12 -r1.13
  --- project.xml       3 Jun 2003 20:32:55 -0000       1.12
  +++ project.xml       19 Jun 2003 21:41:48 -0000      1.13
  @@ -8,7 +8,7 @@
         The Tomcat Servlet/JSP Container
       </logo>
   
  -    
  +
       <body>
   
       <menu name="Links">
  @@ -22,10 +22,10 @@
           <item name="4) Deployer"            href="deployer-howto.html"/>
           <item name="5) Manager"             href="manager-howto.html"/>
           <item name="6) Realms and AAA"      href="realm-howto.html"/>
  -        <item name="7) Security Manager"    
  +        <item name="7) Security Manager"
                 href="security-manager-howto.html"/>
           <item name="8) JNDI Resources"      href="jndi-resources-howto.html"/>
  -        <item name="9) JDBC DataSources"    
  +        <item name="9) JDBC DataSources"
                 href="jndi-datasource-examples-howto.html"/>
           <item name="10) Classloading"       href="class-loader-howto.html"/>
           <item name="11) JSPs"               href="jasper-howto.html"/>
  @@ -33,8 +33,10 @@
           <item name="13) SSI"                href="ssi-howto.html"/>
           <item name="14) CGI"                href="cgi-howto.html"/>
           <item name="15) Proxy Support"      href="proxy-howto.html"/>
  -        <item name="16) MBean Descriptor" 
  -              href="mbeans-descriptor-howto.html"/>        
  +        <item name="16) MBean Descriptor"
  +              href="mbeans-descriptor-howto.html"/>
  +        <item name="17) Default Servlet"    href="default-servlet.html"/>
  +
       </menu>
   
       <menu name="Reference">
  
  
  
  1.1                  jakarta-tomcat-catalina/webapps/docs/default-servlet.xml
  
  Index: default-servlet.xml
  ===================================================================
  <?xml version="1.0"?>
  <!DOCTYPE document [
    <!ENTITY project SYSTEM "project.xml">
  ]>
  <document url="default-servlet.html">
  
      &project;
  
      <properties>
          <author email="[EMAIL PROTECTED]">Tim Funk</author>
          <title>Default Servlet Reference</title>
      </properties>
  
  <body>
  
  <section name="Introduction">
  
  This discusses different ways to manipulate the default servlet. Topics are
  <ul>
    <li><a href="#what">What is the DefaultServlet?</a></li>
    <li><a href="#where">Where is it declared?</a></li>
    <li><a href="#change">What can I change?</a></li>
    <li><a href="#dir">How do I customize directory listings?</a></li>
    <li><a href="#secure">How do I secure directory listings?</a></li>
  
  </ul>
  
  </section>
  
  <section name="What is the DefaultServlet">
  <a name="what"></a>
  The default servlet is the servlet which serves static resources as well
  as serves the directory listings (if directory listings are enabled).
  
  </section>
  
  <section name="Where is it declared?">
  <a name="where"></a>
  It is declared globally in <i>$CATALINA_HOME/conf/web.xml</i>.
  By default here is it's declaration:
  <source>
      &lt;servlet&gt;
          &lt;servlet-name&gt;default&lt;/servlet-name&gt;
          &lt;servlet-class&gt;
            org.apache.catalina.servlets.DefaultServlet
          &lt;/servlet-class&gt;
          &lt;init-param&gt;
              &lt;param-name&gt;debug&lt;/param-name&gt;
              &lt;param-value&gt;0&lt;/param-value&gt;
          &lt;/init-param&gt;
          &lt;init-param&gt;
              &lt;param-name&gt;listings&lt;/param-name&gt;
              &lt;param-value&gt;true&lt;/param-value&gt;
          &lt;/init-param&gt;
          &lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
      &lt;/servlet&gt;
  
  ...
  
      &lt;servlet-mapping&gt;
          &lt;servlet-name&gt;default&lt;/servlet-name&gt;
          &lt;url-pattern&gt;/&lt;/url-pattern&gt;
      &lt;/servlet-mapping&gt;
  
  </source>
  
  So by default, the default servlet is loaded at webapp startup and
  directory listings are enabled and debugging is turned off.
  </section>
  
  <section name="What can I change?">
  <a name="change"></a>
  The DefaultServlet allows the following initParamters:
  
  <table border="1">
    <tr>
      <th valign='top'>debug</th>
      <td valign='top'>
          Debugging level. It is not very useful unless you are a tomcat
          developer. As
          of this writing, useful values are 0, 1, 11, 1000.
      </td>
    </tr>
    <tr>
      <th valign='top'>listings</th>
      <td valign='top'>
          If no welcome file is present, can a directory listing be
          shown?
          value may be <b>true</b> or <b>false</b>
          <br />
          Welcome files are part of the servlet api.
      </td>
    </tr>
    <tr>
      <th valign='top'>readmeFile</th>
      <td valign='top'>
          If a directory listing is presented, a readme file may also
          be presented with the listing. This file is inserted as is
          so it may contain HTML. default value is null
      </td>
    </tr>
    <tr>
      <th valign='top'>globalXsltFile</th>
      <td valign='top'>
          If you wish to customize your directory listing, you
          can use an XSL transformation. This value is an absolute
          file name which be used for all direcotory listings.
          This can be disabled by per webapp by also declaring the
          default servlet in your local webapp's web.xml. The format
          of the xml is shown below.
      </td>
    </tr>
    <tr>
      <th valign='top'>localXsltFile</th>
      <td valign='top'>
          You may also customize your directory listing by directory by
          configuring <code>localXsltFile</code>. This should be a relative
          file name in the directory where the listing will take place.
          This overrides <code>globalXsltFile</code>. If this value
          is present but a file does not exist, then
          <code>globalXsltFile</code> will be used. If
          <code>globalXsltFile</code> does not exist, then the default
          directory listing will be shown.
      </td>
    </tr>
    <tr>
      <th valign='top'>input</th>
      <td valign='top'>
          Input buffer size (in bytes) when reading
          resources to be served.  [2048]
      </td>
    </tr>
    <tr>
      <th valign='top'>output</th>
      <td valign='top'>
          Output buffer size (in bytes) when writing
          resources to be served.  [2048]
      </td>
    </tr>
    <tr>
      <th valign='top'>readonly</th>
      <td valign='top'>
          Is this context "read only", so HTTP commands like PUT and
          DELETE are rejected?  [true]
      </td>
    </tr>
  
  
  </table>
  </section>
  
  <section name="How do I customize directory listings?">
  <a name="dir"></a>
  <p>You can override DefaultServlet with you own implementation and use that
  in your web.xml declaration. If you
  can undertand what was just said, we will assume yo can read the code
  to DefaultServlet servlet and make the appropriate adjustments. (If not,
  then that method isn't for you)
  </p>
  <p>
  You can use either  <code>localXsltFile</code> or
  <code>globalXsltFile</code> and DefaultServlet will create
  an xml document and run it through an xsl transformation based
  on the values provided in <code>localXsltFile</code> and
  <code>globalXsltFile</code>. <code>localXsltFile</code> is first
  checked, followed by <code>globalXsltFile</code>, then default
  behaviors takes place.
  </p>
  
  <p>
  Format:
  <source>
      &lt;listing&gt;
       &lt;entries&gt;
        &lt;entry type='file|dir' urlPath='aPath' size='###' date='gmt date'&gt;
          fileName1
        &lt;/entry&gt;
        &lt;entry type='file|dir' urlPath='aPath' size='###' date='gmt date'&gt;
          fileName2
        &lt;/entry&gt;
        ...
       &lt;/entries&gt;
       &lt;readme&gt;&lt;/readme&gt;
      &lt;/listing&gt;
  </source>
  <ul>
    <li>size will be missing if <code>type='dir'</code></li>
    <li>Readme is a CDATA entry</li>
  </ul>
  </p>
  The following is a sample xsl file which mimics the default tomcat behavior:
  <source>
  &lt;?xml version="1.0"?&gt;
  
  &lt;xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
    version="1.0"&gt;
  
    &lt;xsl:output method="xhtml" encoding="iso-8859-1" indent="no"/&gt;
  
    &lt;xsl:template match="listing"&gt;
     &lt;html&gt;
      &lt;head&gt;
        &lt;title&gt;
          Sample Directory Listing For
          &lt;xsl:value-of select="@directory"/&gt;
        &lt;/title&gt;
        &lt;style&gt;
          h1{color : white;background-color : #0086b2;}
          h3{color : white;background-color : #0086b2;}
          body{font-family : sans-serif,Arial,Tahoma;
               color : black;background-color : white;}
          b{color : white;background-color : #0086b2;}
          a{color : black;} HR{color : #0086b2;}
        &lt;/style&gt;
      &lt;/head&gt;
      &lt;body&gt;
        &lt;h1&gt;Sample Directory Listing For
              &lt;xsl:value-of select="@directory"/&gt;
        &lt;/h1&gt;
        &lt;hr size="1" /&gt;
        &lt;table cellspacing="0"
                    width="100%"
              cellpadding="5"
                    align="center"&gt;
          &lt;tr&gt;
            &lt;th align="left"&gt;Filename&lt;/th&gt;
            &lt;th align="center"&gt;Size&lt;/th&gt;
            &lt;th align="right"&gt;Last Modified&lt;/th&gt;
          &lt;/tr&gt;
          &lt;xsl:apply-templates select="entries"/&gt;
          &lt;/table&gt;
        &lt;xsl:apply-templates select="readme"/&gt;
        &lt;hr size="1" /&gt;
        &lt;h3&gt;Apache Tomcat/5.0&lt;/h3&gt;
      &lt;/body&gt;
     &lt;/html&gt;
    &lt;/xsl:template&gt;
  
  
    &lt;xsl:template match="entries"&gt;
      &lt;xsl:apply-templates select="entry"/&gt;
    &lt;/xsl:template&gt;
  
    &lt;xsl:template match="readme"&gt;
      &lt;hr size="1" /&gt;
      &lt;pre&gt;&lt;xsl:apply-templates/&gt;&lt;/pre&gt;
    &lt;/xsl:template&gt;
  
    &lt;xsl:template match="entry"&gt;
      &lt;tr&gt;
        &lt;td align="left"&gt;
          &lt;xsl:variable name="urlPath" select="@urlPath"/&gt;
          &lt;a href="{$urlPath}"&gt;
            &lt;tt&gt;&lt;xsl:apply-templates/&gt;&lt;/tt&gt;
          &lt;/a&gt;
        &lt;/td&gt;
        &lt;td align="right"&gt;
          &lt;tt&gt;&lt;xsl:value-of select="@size"/&gt;&lt;/tt&gt;
        &lt;/td&gt;
        &lt;td align="right"&gt;
          &lt;tt&gt;&lt;xsl:value-of select="@date"/&gt;&lt;/tt&gt;
        &lt;/td&gt;
      &lt;/tr&gt;
    &lt;/xsl:template&gt;
  
  &lt;/xsl:stylesheet&gt;
  </source>
  
  </section>
  
  <section name="How do I secure directory listings?">
  <a name="secure"></a>
  Use web.xml in each individual webapp. See the security section of the
  Servlet specification.
  
  </section>
  
  </body>
  
  </document>
  
  
  

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