A Tour Through Spring 3 - Developing Web Applications

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A Tour through Spring 3

Keith Donald, Principal Engineer

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Topics

MVC

Ajax

Web Flow

Security

Integration

Flex

Tools and Getting Started

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Getting Demo Source

Spring Samples Repository

• http://src.springsource.org/svn/spring-samples

Petcare

• http://src.springsource.org/svn/spring-samples/petcare/trunk

Spring Travel

• http://src.springsource.org/svn/spring-samples/travel/trunk

http://src.springsource.org/svn/spring-samples



http://src.springsource.org/svn/spring-samples/petcare/trunk








I ♥ spring

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MVC

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Key Features

@Controller programming model

• For developing web applications and web services

• Configuration namespace

REST support

• URI Templates

• HTML, JSON, XML, ATOM/RSS representations

• Content Negotiation

• Support for PUT and DELETE requests

Data Binding and Type Conversion

Declarative Validation

• JSR-303


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MVC Demo

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Ajax

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Key Features

Integrates well with leading JavaScript toolkits

• jQuery

• Dojo

Integrates well with popular CSS frameworks

• Blueprint CSS

• 960 Grid

Spring JavaScript Module (part of Web Flow)

• Server-side partial page rendering built on Tiles composite view system

• Client-side progressive enhancement API built on Dojo

• Widget decorations

• Ajax event decorations

• Client-side validation


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Ajax Demo

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Web Flow

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Key Features

Lets you define flows that guide users through business processes

• Single module, e.g. “Loan Application”, encapsulating all process steps

• Navigation rules strictly enforced server-side

Manages conversational state

• Isolated from other users

• Local to current window, tab, or dialog

• Cleaned up when flow completes or expires

Agile development experience

• Change flows without restarting the server


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Web Flow Demo

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Security

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Key Features

Multiple authentication mechanisms

• Basic, Form, OpenID

Pluggable user data stores

• In Memory, Database, LDAP

Multiple levels of security

• Web (URL-based, enforced by ServletFilter)

• @Secured method (enforced by AOP)

Role-based authorization

• Flexible security expressions with Spring EL

• JSP tag library for conditional rendering

SSL channels


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Security Demo

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Integration

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Key Features

Allows you to add an integration layer to your application

• Connect your application to other systems in a loosely coupled way

• Think messaging!

Comprehensive support for enterprise integration patterns

• Channel, Router, Filter, Transformer, Splitter, Channel Adapter

• High-level configuration DSL built around these patterns

Extensive library of channel adapters

• JMS, File, Mail, HTTP, FTP

Support for asynchronous / parallel workloads

I ♥ spring

global appointments

Message

Gateway

Logger

appointment

message router

Admin

Client

Admin

Client

Admin

Client

asyncMailer

doctorMail

Transformer

Doctor

Mail

Integration Pipeline


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Integration Demo

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Flex

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Key Features

Export Spring Beans to Flex Clients

• Over AMF (RPC), HTTP (REST)

Security

• Utilizing Spring Integration

Integration

• Utilizing Spring Integration; push messages to Flex clients

Built on top of Spring MVC

• Configuration namespace simplifies setup and configuration

• Plugs into DispatcherServlet processing lifecycle

Spring ActionScript

• DI / MVC framework for Flex clients

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Tools and Getting Started

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Key Features

SpringSource Tool-Suite

• New Project Templates (can create your own)

• Essential plugins pre-integrated (Spring IDE, WTP, m2Eclipse, AJDT, Roo, etc)

• Convenient “Spring Extensions” Install

• e.g. install Groovy tooling add-on in one click!

• Content assist / auto-completion

• Visualization

• Embedded tc Server Developer Edition, including Spring Insight

Roo

• Code generation with round tripping

• Reduced Java ceremony (@RooJavaBean, @RooToString)

• Support for Active Record pattern (@RooEntity)

• UI Scaffolding

• Intelligent command-line shell interface

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Getting Started with Spring

Download SpringSource Tool Suite

• http://www.springsource.com/products/sts

Create your first Spring MVC Project

• New -> Spring Template Project -> Spring MVC Project

Experience Roo

• New -> Roo Project -> Open Roo Shell -> type “hint”

Study the sample applications

• Checkout Petcare, Spring Travel, import into STS and run on Tomcat

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Roo Demo

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Coming in Spring 3.1

Conversation Scope, Flash Map

Comet (long-polling) support

Java @Flow Definitions

Static resources handler

OAuth support

Roo Add-ons

• “Open Web” (HTML/CSS/JS) improvements

• Flex (new)

• GWT (new)

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Resources

Spring articles and documentation

• http://www.springsource.org/documentation

Roo webinar and video

• http://www.springsource.org/node/2479

• http://s3.springsource.com/MRKT/roo/2010-01-Five_Minutes_Roo.mov

Get involved

• Forums: http://forum.springsource.org

• JIRA: http://www.springframework.org

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http://www.springframework.org/documentation

http://www.springsource.org/node/2479





http://s3.springsource.com/MRKT/roo/2010-01-Five_Minutes_Roo.mov





A Tour Through Spring 3 - Developing Web Applications

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