IS-907 Java EE

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IS-907 Java EE

• Enterprise applications

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Enterprise applications

• distributed applications
• many users
• lots of data
• challenges
• security
• transactions
• application management

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Enterprise applications architecture
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Enterprise applications architecture
Glassfish Java EE Server
Web Container
EJB Container
Browser
JSF
http/ssl
EJB
Servlet
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Java EE Services and APIs

• Security
• authentication
• authorization
• encryption
• Presentation/Interface
• Servlets
• JavaServer Faces
• Web Services
• XML processing

• Business Logic
• Enterprise JavaBeans
• Dependency injection
• Transaction management
• Directory services
• Message Queues
• Persistence
• Java Persistence API
• JDBC

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Enterprise application development

• Write java classes
• Servlets
• Backing beans
• EJBs
• Entities
• Write other components
• Facelets
• Static content
• html pages, images, ...
• Write default configuration

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Enterprise application packaging and deployment

• Short version
• Create an archive with all necessary files
• Deploy (install) archive on server

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Enterprise application packaging and deployment

• Long version Configuration needed...
• Application server needs to know...
• which classes are servlets, entities, ejbs, ...
• which urls to bind to servlets,
• mapping of entities to db tables
• Configuration can be specified with xml files
• xml has been made almost redundant for developers
  by annotations and sensible defaults (convention
  over configuration)
• The deployer can override developers
  configuration using xml files