Fundamentals of Jakarta Struts Training Class

1. Struts Intro, Overview, and Setup

• 
  Understanding Struts
  
  
  
  • 
    Different views of Struts
  
  
  • 
    Advantages of Struts
  
  
  • 
    Disadvantages of Struts
  
  
  
  

2. Processing Requests with Action Objects

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  Struts flow of control


• 
  The six basic steps in using Struts


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  Example: one result mapping


• 
  Example: multiple result mappings

3. Handling Request Parameters with Form Beans

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  Two new ideas
  
  
  
  • 
    Automatically creating bean to represent request data
  
  
  • 
    Using bean:write to output bean properties
  
  
  
  


• 
  Defining form beans


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  Declaring form beans


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  Outputting properties of form beans
  
  
  
  • 
    bean:write
  
  
  • 
    JSP 2.0 expression language
  
  
  
  


• 
  Defining and outputting regular beans

4. Prepopulating and Redisplaying Input Forms

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  Using the Struts html: tags to build HTML forms that have three important
  characteristics:
  
  
  
  • 
    The textfield names and the bean properties are guaranteed to stay in synch
  
  
  • 
    The textfield values can be prepopulated based on the values in a bean
  
  
  • 
    The forms can be redisplayed when they are submitted with incomplete or
    incorrect values
  
  
  
  

5. Using Properties Files (Resource Bundles)

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  Loading properties files


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  Using bean:message


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  Applying properties files
  
  
  
  • 
    To reuse fixed strings
  
  
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    To support internationalization
  
  
  
  

6. DispatchAction and Other Advanced Action Classes

• 
  Performing different logic based on a radio button, hidden field, or push
  button value
  
  
  
  • 
    But not repeatedly checking parameter names in the execute method
  
  
  • 
    Using DispatchAction
  
  
  
  


• 
  Using Struts form-bean capabilities in non-Struts applications
  
  
  
  • 
    Without redoing code in Struts
  
  
  • 
    Using ForwardAction
  
  
  
  


• 
  Other advanced Action subclasses

7. Declarative Exception Handling

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  Transferring to custom error pages when various exception types are
  thrown


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  Global exceptions


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  Per-Action exceptions


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  Standard web.xml approach


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  Using custom exception handlers


• 
  Declaring


• 
  Defining

8. Manually Validating Input

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  Distinguishing manual validation from automatic validation


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  Performing validation in the Action
  
  
  
  • 
    Error messages in beans
  
  
  
  


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  Performing validation in the ActionForm
  
  
  
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    Fixed error messages
  
  
  • 
    Error messages with substitution
  
  
  
  


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  Separate error messages

9. Automatically Validating Input

• 
  Distinguishing manual validation from automatic validation


• 
  Distinguishing client-side validation from server-side validation


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  Using automatic validation
  
  
  
  • 
    Declare application-wide properties file
  
  
  • 
    Add messages to properties file
  
  
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    Turn on the automatic validator
  
  
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    Put validation rules in validation.xml
  
  
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    Put in input page
  
  
  • 
    Enable JavaScript validation
  
  
  
  

10. Laying Out Pages with Tiles

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  Tiles motivations


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  Tiles basics
  
  
  
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    Sketch out desired layout
  
  
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    Make template file that represents layout
  
  
  • 
    Create JSP pages that define layout pieces
  
  
  • 
    Create JSP pages that populate layout
  
  
  
  


• 
  Handling relative URLs in Tiles


• 
  Using Tiles definitions file

Those who have JSP experience and are looking to make their web-based applications more robust and flexible using model-view-controller frameworks such as Struts or JavaServer Faces.

Java Web Developer or equivalent experience working with Java and JavaServer Pages (JSP).

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