JSP+XML的技術綱要(2)

js|xml

 

– Resources
 – Mappings
 – Filters (JSP 1.2)
 – 其它

3 現狀

3.1 業界支援

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

一些使用者：
PeopleSoft，I2，CP ...

一些網站：
Delta.com, Food.com, CarOrder.com ...

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

3.2 新的JSP & Servlets技術


* JSR-053
* Servlet 2.3
– Filters
– Application Events
* JSP 1.2
– JSP頁面的XML方式查詢
– 許多改進和增強
*  Apache組織的推行
– jakarta.apache.org/tomcat

3.3 JSP Tag Library


* JSR-052
* 標準的JSP tag library
– 豐富的功能
– XSLT
– XPATH
– 其它的XML的進程
– Apache組織的推進（ jakarta.apache.org/taglibs）


3.4 架構的支援


* J2EE體系
* JSP/Servlet體系
– Struts
– Apache組織的推進（jakarta.apache.org/struts）

3.5 JSP工具支援


* 大多數情況下是為頁面作者提供的
– 有一些是為TagLib工作者提供
* 已經存在於一些工具中
– 例如，UltraDev支援Struts
* 近6個月的預測
– 標準的taglib將出現，還有各種其他的taglib

3.6 XML解析和轉化


* JAXP 1.1
– 下一代 J2SE(JDK)的組成部分
– DOM level 2
– XSLT
– 和TRaX (XSLT啟用)進行組合
– Apache組織的推進
* XSLTC
– XSLT編譯器
– 更快，更小的指令碼

3.7 資料繫結


Beans Long Term Persistance
* Adelard
– 下一代J2SE的組成部分
– 資料繫結
* JavaBeans Long Term Persistance
– 下一代 J2SE的組成部分
– 圖形化Swing機制

3.8 XML Messaging


* XML messaging
– JMS
– ebXML
– JAXM
– Message Beans (J2EE 1.3)

(劇終)

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為防誤譯，特附原來文檔，這是sun網站的官方pdf文檔，有685K，我特地從中裁剪出來的。:)

JSP Technology and XML技術綱要
Eduardo Pelegri-Llopart
Sun Microsystems
pelegri@eng.sun.com
http://java.sun.com/jsp

提綱
* JSP, Servlets & J2EE
* JSP and XML
* Status

1 JSP, Servlets & J2EE
1。1 J2EE Platform

* Specification
* Compatibility Tests
* Reference Implementation (RI)
* Rich Functionality
– JSP and Servlets
– JDBC
– EJB
– JMS
– Connector to EIS (J2EE 1.3)

1。2 J2EE Benefits

* Common Mindshare
– Documentation
– Training
– Tool Support
* Portability
* Best-of-Breed Implementations

1。3 Web Layer of J2EE
（插圖1)

1.4 Role of JSP and Servlets
* Entry point to application
* Interacts with the exterior
* Usually through HTTP
* Client may be:
* Browser
* Applet
* Desktop application (Java Web Start)
* Wireless Device
* Server application (B2B)

1.5 JSP and Servlets
* Can be used in
– JSP & Servlet Container
– J2EE Container
* Common mindshare
* Best-of-breed implementation
* Wide support

1.6 What Is a Servlet?
* Extension mechanism
* Dynamic content generation
* Mapped to URLs
* Simple architecture
* Managed by container

1.7 JSP Page
* A textual document
* Describes a request – response map
* Servlet Semantics

1.8 一個例子
<?xml version="1.0">
<%@ page contentType=”text/xml” %>
<%@ taglib prefix="x" uri="..." %>
<wml>
<card id="card1" title="Flowers">
<p>
Flowers available:
<br/>
<x:enumerate inventory="flowers"
id="aFlower">
<%= aFlower.type %>
<br/>
</x:iterate>
<br/>
</p>
</card>
</wml>

1.9 JSP Page
* A textual document
* Builds on
– Template data
– Dynamic content
* Tool friendly
* Abstraction using
– JavaBeans
– Tag Libraries

1.10 Tag Libraries
* Abstraction Mechanism
* XML syntax
* Run-Time Protocol
– Integration into a JSP page
– Easy to compose and customize
– Managed by JSP container
– Simple protocol for simple needs

1.11 Roles Involved
* Page and Site Author
– Creates presentation from developer data
– Expert in UI
– Uses Tag Libraries & JavaBeans
– Page Authoring tools
* Developer
– Provides access to data for page author
– Expert in server-side organization
– Defines Tag Libraries & JavaBeans
– IDEs

2 JSP & XML
2.1 Uses of XML in JSP Technology
JSPs Pages
– Consuming XML
– Generating XML
– Transforming XML
* JSP Pages as XML documents
* XML configuration

2.2 Consuming XML
* Parse XML into objects (by developer)
– Hand-coded
– Using Adelard Technology
* Parse and Iterate abstraction
* Insert after transformation
– XSLT

2.3 Parse Into Object