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Schnelleinstieg Javaserver Faces
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Simon Olofsson
April 29, 2013
Technology
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Schnelleinstieg Javaserver Faces
Kurze Präsentation zu Javaserver Faces.
Simon Olofsson
April 29, 2013
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Transcript
Javaserver Faces April 2013, Peter Melms und Simon Olofsson
Model View Controller Javaserver Faces • MVC-Framework zur Entwicklung von
grafischen Webapplikationen • basiert auf der Servlet- API und Facelets
Geschichte 2004: Version 1.0 (JSR 127) 2006: Version 1.2 (JSR
252) 2009: Version 2.0 (JSR 314) 2013: Version 2.2 (JSR 344)
Search http://example.com Web Page Title Your Name Select a date
30 3 29 1 2 31 28 24 21 23 25 27 26 22 20 18 14 17 19 16 15 12 9 11 8 7 10 13 S 6 F 5 T 4 W 3 T 2 1 M 30 S Select Today December 2008 Birthday Register or Cancel Sign Up! Komponenten • Komponenten: die Elemente einer Benutzeroberfläche • hierarchisch organisiert (Baumstruktur)
Java- Beans JSF- Komponenten- baum FacesServlet EL Validierung & Aktualisierung
Auswahl Architektur • Controller: FacesServlet • View: Baum mit JSF- Komponenten • Model: vom Container verwaltete Java-Beans
Restore View Apply Request Parameters Process Validations Update Model Values
Invoke Application Render Response Request Response Lebenszyklus
Bean Scopes Request View Session Application None
The Bad Parts • Abstraktion verdeckt den Request-Response-Zyklus und erschwert
das Debugging • generierter Code macht Anpassungen aufwendiger