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Overview

Overview. One-click launch of application Auto-install feature Provide versioning/caching feature for update/fast startup Provide some API for desktop application bundle a JNLP-deployed application in a Web Archive (WAR) file. Architecture. Example of descriptor.

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Overview

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Presentation Transcript

  1. Overview • One-click launch of application • Auto-install feature • Provide versioning/caching feature for update/fast startup • Provide some API for desktop application • bundle a JNLP-deployed application in a Web Archive (WAR) file

  2. Architecture

  3. Example of descriptor <?xml version="1.0" encoding="utf-8"?> <jnlp spec="1.0+" codebase=http://localhost:8080/ekp/nd href="http://localhost:8080/ekp/nd/test.jnlp"> <information> <title>JWS test</title> <vendor>Netdimensions</vendor> <homepage href="http://www.netdimensions.com"/> <description>Test</description> <icon href="http://www.netdimensions.com/netd_images/logo.jpg"/> <offline-allowed/> </information> <security> </security> <resources> <j2se version="1.3"/> <jar href="http://localhost:8080/ekp/nd/test.jar"/> </resources> <application-desc main-class="test.test"/> </jnlp>

  4. Extra Tag useful in descriptor • Define extra parameter • <application-desc main-class="Main">     <argument>arg1</argument>     <argument>arg2</argument> </application-desc> • Define VM parameter • <j2se version="1.3" initial-heap-size="64m"/> <property name="..." value=".."/> • Demo • http://carfield:8080/ekp/nd/test.jnlp

  5. Auto Install • Only For Windows platform • <OBJECT CODEBASE="http://java.sun.com/products/javawebstart/autodl/jinstall-1_4_1-windows-i586.cab" CLASSID="clsid:5852F5ED-8BF4-11D4-A245-0080C6F74284" HEIGHT=0 WIDTH=0> <PARAM NAME="app" VALUE="http://carfield:8080/ekp/nd/test.jnlp"><PARAM NAME="back" VALUE="true"><!-- Alternate HTML for browsers which cannot instantiate the object --><A HREF="http://java.sun.com/cgi-bin/javawebstart-platform.sh?">Download Java Web Start</A></OBJECT> • Replace CODEBASE for complete JRE install • Demo: http://carfield:8080/ekp/nd/test1.html

  6. Java Web Start API • BasicService, which provides a service similar to the AppletContext. • DownloadService, which allows an application to interact with the JNLP Client to check if application resources are available locally, and to request them to be downloaded. Service allow un-trust client execute system function • FileOpenService • FileSaveService • ClipboardService • PrintService • PersistenceService, key base persistence store like cookies • ExtensionInstallerService, which provides an interface for extension installers to communicate with the JNLP Client.

  7. Other Feature • Able to access system resource using code signing • Cache the jar in hard-disk • Packaging JNLP Applications in a Web Archive • Versioning support:<jar href="http://www.mysite.com/b.jar" version="2.3+"/>

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