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JSP XML的技术纲要(3)
作者：问天 发表时间：2007-2-20 11:34 阅读：245次 在百度搜索相关内容
<%@ taglib uri="..." prefix="tl" %>
<html>
<tl:parse id="saleBooks" type="BookInventory"
xml="Book_Inventory_URL"/>
<head>...
<body>
<table border="0" width="50%">
<tl:iterate
id ="bk" type="Book"
collection="<%= saleBooks.getBooks()%>" >
<tr>
<td><jsp:getProperty name="bk" property="title"/></td>
</tr>
</tl:iterate>
</table>
</body>
</html>

2.4 Parse and Iterate
<%@ taglib uri="..." prefix="tl" %>
<html>
<head>...
<body>
<table border="0" width="50%">
<tl:iterateOn
XML
Stream
id="bk" type="Book"
xml="Book_Inventory_URL">
<tr>
<td><jsp:getProperty name="bk" property="title"/></td>
</tr>
</tl:iterateOn
XML
Stream>
</table>
</body>
</html>

2.5 Combining Data
(插图2)

2.6 Insert After Transformation
<%@taglib uri="http://jakarta.apache.org/taglibs/xsl/1.0"
prefix="x" %>
<html>
<head>...
<body>
<center> Welcome
<x:apply xml="Customer_URL" xsl="store.xsl"/>!
<p>
On Sale Today ...
<p>
<x:apply xml="Inventory_URL" xsl="store.xsl"/>
</center>
</body>
</html>

2.7 Producing
XML

* Client may be
&;#8211; Gateway
&;#8211; Device (WAP, XHTML)
*
XML

*
XML
StyleSheet

2.8 Voice
XML
and WAP Gateways
(插图3)


2.9 Generating
XML

J1 @ java.sun.com
(插图4)

2.10 XSLT on
XML

(插图5)

2.11
JSP
and XSLT
*
JSP
strengths
&;#8211; Template &;amp; Java
&;#8211; Multiple Sources
&;#8211; Open-ended Portable Abstraction
* XSLT strengths
&;#8211; Recursive tree transformation
&;#8211; Well defined input/output
* XPath

2.12 Generating Content for
Multiple Devices
* One back end source
* Many clients
* Minimize Total Maintenance Cost
* Desired Generation Performance

2.13 Multiple Clients
XSLT Stylesheet
(插图6)

2。14 Multiple Clients
Short Pipelines
(插图7)

2.15 Multiple Clients
Combined Approach
(插图8)

2.16 Uses of
XML
in
JSP
Technology
*
JSP
s Pages

JSP
Pages as
XML
documents
*
XML
configuration

2.17
JSP
Pages as
XML
Documents
* Manipulation
&;#8211; Apply XSLT to generate
JSP

* Authoring
&;#8211;
JSP
pages from
XML
objects
* Validation
&;#8211; TagLibraryValidator
* Standarized in
JSP
1.2

2.18
XML
Configuration
* Tag Library Descriptor
* Servlet configuration
&;#8211; Resources
&;#8211; Mappings
&;#8211; Filters (
JSP
1.2)
&;#8211; others

3 现状

3。1 Industry Support

Containers
Apache
Allaire
ATG Dynamo
BEA Weblogic
Bluestone
Caucho
Gemstone
IBM’ s WebSphere
Inprise AppServer
Iplanet iWS, iAS
Oracle
Persistence
Unify

Some Users
* PeopleSoft
* I2
* CP
* ...

Some Sites
* Delta.com
* Food.com
* CarOrder.com
* ...

Tools
* MacroMedia
UltraDev
* Adobe GoLive
* Unify eWeb Studio
* WebGain’ s Studio
* Forte for Java
* Oracle Jdeveloper
* Inprise Jbuilder
* ATG Dynamo
* ...

3。2 New
JSP
&;amp; Servlets
* JSR-053
* Servlet 2.3
&;#8211; Filters
&;#8211; Application Events
*
JSP
1.2
&;#8211;
XML
view of
JSP
page
&;#8211; Many improvements &;amp; refinements
* Implementation @ ASF
&;#8211; jakarta.apache.org/tomcat

3。3
JSP
Tag Library
* JSR-052
* Standard
JSP
tag library
&;#8211; Rich functionality
&;#8211; XSLT
&;#8211; XPATH
&;#8211; Other
XML
processing
* Implementation @ ASF
&;#8211; jakarta.apache.org/taglibs

3。4 Framework efforts
* J2EE Framework
&;#8211; Blueprints
*
JSP
/ Servlet Framework
&;#8211; Struts
&;#8211; Implementation @ ASF
&;#8211; jakarta.apache.org/struts

3。5
JSP
Tool Support
* Mostly for Page Authoring
&;#8211; Some for TagLib Authoring
* Already in several tools
&;#8211; e.g. UltraDev support in Struts
* Focus next 6 months
&;#8211; Standard taglib
&;#8211; Any taglib

3。6
XML
Parsing &;amp; Transformation
* JAXP 1.1
&;#8211; Part of next J2SE (JDK)
&;#8211; DOM level 2
&;#8211; XSLT
&;#8211; Combined with TRaX (XSLT activation)
&;#8211; Implementation @ ASF
* XSLTC
&;#8211; XSLT compiler
&;#8211; Fast, Small footprint

3。7 Data Binding
Beans Long Term Persistance
* Adelard
&;#8211; Part of next J2SE
&;#8211; Data Binding
* JavaBeans Long Term Persistance
&;#8211; Part of next J2SE
&;#8211; Generic Swing Machinery

3。8
XML
Messaging
*
XML
messaging
&;#8211; JMS
&;#8211; eb
XML

&;#8211; JAXM
&;#8211; Message Beans (J2EE 1.3)
**************************************************
Review
*
JSP
, Servlets &;amp; J2EE
*
JSP

&;#8211; Consuming
XML

&;#8211; Transforming
XML

&;#8211; Producing
XML

&;#8211; Relationship with XSLT
* Status of several
JSP
/
XML
efforts
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