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Servlet与JSP核心编程原码,适合刚做软件开发的程序员参考！

<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
        PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN"
        "web-jsptaglib_1_1.dtd">

<!-- a tab library descriptor -->

<taglib>
  <!-- after this the default space is
	"http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd"
   -->

  <tlibversion>1.0</tlibversion>
  <jspversion>1.1</jspversion>
  <shortname>simple</shortname>
  <info>
	A simple tab library for the examples
  </info>

  <!-- A simple Tag -->
  <!-- foo tag -->
  <tag>
    <name>foo</name>
    <tagclass>examples.FooTag</tagclass>
    <bodycontent>empty</bodycontent>
    <info>
	Perform a server side action; uses 3 mandatory attributes
    </info>

    <attribute>
      <name>att1</name>
      <required>true</required>
    </attribute>
    <attribute>
      <name>att2</name>
      <required>true</required>
    </attribute>
    <attribute>
      <name>att3</name>
      <required>true</required>
    </attribute>
  </tag>

  
  <!-- Tags defining a connection/userid/password/query collection -->
  <!-- connection tag -->
  <tag>
    <name>connection</name>
    <tagclass>examples.ConnectionTag</tagclass>
    <!-- TODO: possibly provide this class as part of the spec -->
    <teiclass>examples.DefaultTEI</teiclass>
    <info>
	A connection must have a password and a userid subelements
	somewhere.

	A connection action must have a ref attribute providing some
	information on the connection.
	A connecton action may have an id in which case the connection
	object will be made available under that name
	
	A connection can also be used without an id, just nest the query
	within it!
    </info>     

    <attribute>
	<name>id</name>
	<required>false</required>
    </attribute>
    <attribute>
	<name>ref</name>
	<required>true</required>
	<rtexprvalue>true</rtexprvalue>
    </attribute>
  </tag>

  <!-- password tag -->
  <tag>
    <name>password</name>
    <tagclass>examples.PasswordTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>
	Define the password

	In this example we use the body rather than an attribute to pass
	the information.  It would be even easier to code if we used an
	attribute; we would just mark it as a request-time value.
    </info>
  </tag>

  <!-- userid tag -->
  <tag>
    <name>userId</name>
    <tagclass>examples.UserIdTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>
	Define the userId

	In this example we use the body rather than an attribute to pass
	the information.  It would be even easier to code if we used an
	attribute; we would just mark it as a request-time value.
    </info>
  </tag>

  <!-- query tag -->
  <tag>
    <name>query</name>
    <tagclass>examples.QueryTag</tagclass>
    <teiclass>examples.DefaultTEI</teiclass>
    <bodycontent>tagdependent</bodycontent>
    <info>
	This tag provides an abstraction over SQL queries.
	
	There is one required id attribute, and one optional
	connection attribute, which, when provided, must be the
	id for some connection tag.

	The body should, when evaluated, correspond to an SQL
	query. 
    </info>

    <attribute>
	<name>id</name>
	<required>true</required>
    </attribute>
    <attribute>
	<name>connection</name>
	<required>false</required>
    </attribute>
  </tag>


  <!-- A simple iteration tag -->
  <!-- foreach tag -->
  <tag>
    <name>forEach</name>
    <tagclass>examples.ForEachTag</tagclass>
    <teiclass>examples.ForEachTEI</teiclass>
    <bodycontent>JSP</bodycontent>
    <info>
	A simple iteration tag.

	There are two required attributes: row and in

	The value of the "in" attribute is the ID of a query that has
	been defined in the JSP page prior to this tag.

	The value of the "row" attribute the name of a scripting variable
	that will be defined within the scope of the foreach tag.
	This scripting variable will receive successive row values of the
	query result provided through the "in" attribute.

	The body of the tag is evaluated as many times as there are
	rows in the query result object.  The evaluation is passed through
	to the enclosing out JspWriter.
    </info>

    <attribute>
	<name>row</name>
	<required>true</required>
    </attribute>
    <attribute>
	<name>in</name>
	<required>true</required>
    </attribute>
  </tag>


</taglib>