Microsoft PowerPoint - 09Future

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枯拘宗
5 years ago
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1 Web 应用基础

2 Apache Struts

3 Spring

4 HelloWorld public class HelloWorld { public static void main(string[] args) { System.out.println("Hello World!"); 以下情况怎么办? 改变消息内容以不同方式输出这个消息附上 HTML 标签而非文本

5 HelloWorld (Revised, v1) public class HelloWorldWithCommandLine { public static void main(string[] args) { if(args.length > 0) { System.out.println(args[0]); else { System.out.println("Hello World!"); 现在无需改变代码就可以更改消息内容, 但消息显示方式无法方便地改变

6 Interface <<interface>> MessageProvider String getmessage() implements <<class>> HelloWorldMessageProvider String getmessage()

7 Interface <<interface>> MessageRenderer void render() void setmessgeprovider(messageprovider provider) MessageProvider getmessageprovider() implements <<class>> StandardOutMessageRenderer void render() void setmessgeprovider(messageprovider provider) MessageProvider getmessageprovider()

8 HelloWorldMessageProvider public class HelloWorldMessageProvider implements MessageProvider { public String getmessage() { return "Hello World!";

9 StandardOutMessageRenderer public class StandardOutMessageRenderer implements MessageRenderer { public MessageProvider messageprovider = null; public void render() { if (messageprovider == null ) { throw new RuntimeException ("Message Provider is null"); System.out.println(messageProvider.getMessage()); public void setmessageprovider (MessageProvider provider) { this.messageprovider = provider; public MessageProvider getmessageprovider() { return this.messageprovider;

10 HelloWorld (Revised, v2) public class HelloWorldDecoupled { public static void main(string[] args) { MessageRenderer mr = new StandardOutMessageRenderer; MessageProvider mp = new HelloWorldMessageProvider(); mr.setmessageprovider(mp); mr.render(); 还有一个小问题 : 若想改变消息提供和显示者还要改变代码

11 MessageSupportFactory (Part 1) import java.io.fileinputstream; import java.util.properties; renderer.class= StandardOutMessageRenderer provider.class= HelloWorldMessageProvider public class MessageSupportFactory { private static MessaeSupportFactory instance = null; private Properties props = null; private MessageRenderer renderer = null; private MessagProvider provider = null; private MessageSupportFactory() { props = new Properties(); try { props.load(new FileInputStream("msf.properties")); String rendererclass=props.getproperty("renderer.class"); renderer = (MessageRenderer) Class.forName(rendererClass).newInstance(); String providerclass=props.getproperty("provider.class"); provider = (MessageProvider) Class.forName(providerClass).newInstance();

12 MessageSupportFactory (Part 2) catch (Exception e) { e.printstacktrace(); static { instance = new MessageSupportFactory(); public static MessageSupportFactory getinstance() { return instance; public MessageRenderer getmessagerenderer() { return renderer; public MessageProvider getmessageprovider() { return provider;

13 HelloWorld (Revised, v3) public class HelloWorldDecoupledWithFactory { public static void main(string[] args) { MessageRenderer mr = MessageSupportFactory.getInstance().getMessageRenderer; MessageProvider mp = MessageSupportFactory.getInstance().getMessageProvider; mr.setmessageprovider(mp); mr.render();

14 Spring renderer.class=standardoutmessagerenderer renderer.messaeprovider(ref)=provider provider.class=helloworldmessageprovider public class HelloWorldSprin { public static void main(string[] args) { BeanFactory factory = getbeanfactory(); MessageRenderer mr = (MessageRenderer) factory.getbean("renderer"); mr.render();

15 Service Web

16 Web Services A Web service is a software application identified by a URI, whose interfaces and binding are capable of being defined, described and discovered by XML and supports direct interactions with other software applications using XML based messages via internet-based protocols

17 Web Services Service Registry Service Description Find UDDI,WSDL Publish UDDI,WSDL Service Requestor Bind Service Provider Service Description Service

18 Grid Computing

19 Semantic David Billington is a lecturer of Discrete Mathematics. <course name="discrete Mathematics"> <lecturer>david Billington</lecturer> </course> <lecturer name="david Billington"> <teaches>discrete Mathematics</teaches> </lecturer> <teachingoffering> <lecturer>david Billington</lecturer> <course>discrete Mathematics</course> </teachingoffering>

20 Semantic Network David Billington is a lecturer of Discrete Mathematics. David Billington teaches Discrete Mathematics is-a is-a lecturer course (Discrete Mathematics, is-a, course) (David Billington, is-a, lecturer) (David Billington, teaches, Discrete Mathematics) RDF: Resource Description Framework

21 Ontology 万物生物非生物植物动物有机物无机物脊椎动物无脊椎动物哺乳动物 Ontology Vocabulary

22 Reference " 如果无论 John 到哪里去,Lucy 也就去那里, 那么如果 John 在学校里, Lucy 在哪里?" 两个事实的公式集为 : ( x)[ AT( JOHN, x) AT( LUCY, x)] AT ( JOHN, SCHOOL) 需证明的公式 : ( x) AT ( LUCY, x)

23 Reference "Lucy 在哪里 " 的反演树 AT( LUCY, x) AT ( JOHN, y) AT ( LUCY, y) AT ( JOHN, x) AT ( JOHN, SCHOOL) NIL

24 Reference 求取答案例题的反演树 AT ( LUCY, x) AT ( LUCY, x) AT( JOHN, y) AT( LUCY, y) AT ( JOHN, x) AT ( LUCY, x) AT ( JOHN, SCHOOL) AT ( LUCY, SCHOOL) Logic and Proof

25 Social Network and Small World

26 Agent Community Trust

27 Semantic Web

28 Intelligent Search Engine

29 虚拟现实设备 : 高性能图形计算机头盔眼镜三维显示器三维鼠标环形屏幕手套

30 虚拟现实虚拟环境虚拟房间虚拟汽车虚拟人

31 虚拟现实分类沉浸型虚拟现实系统简易型虚拟现实系统

32 虚拟现实在军事领域的应用虚拟战场环境单兵模拟训练与评判诸军种联合虚拟演习进行指挥员训练

33 虚拟现实在商业领域的应用物品外观展示物品特性展示物品的功能参数物品的价格

34 虚拟现实在文化遗产保护领域的应用

35 Web 3D 技术实现层次开发技术可扩展性最适合的 ( 难度 ) 应用领域 Java3D 中层 Java J2SE 标准扩展网上三维展示 (JVM) ( 较易 ) ( 好 ) OpenGL 底层 C\C++ 各大厂商支持三维设计软件 ( 显卡 ) ( 难 ) ( 较好 ) Direct3D 底层 C++ Windows 平台三维游戏 ( 操作系统 ) ( 较难 ) ( 差 ) VRML/X3D 上层标记语言安装插件支持网上虚拟现实 ( 网页 ) ( 易 ) ( 一般 )

36 VRML/X3D

37 Any Question?

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untitled 4.1AOP AOP Aspect-oriented programming AOP 來說 AOP 令理 Cross-cutting concerns Aspect Weave 理 Spring AOP 來 AOP 念 4.1.1 理 AOP AOP 見例來例錄 Logging 錄便來例行留錄 import java.util.logging.*; public class HelloSpeaker