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By Ian Roughley
Apache Struts has lengthy supplied Java builders with a strong framework for development extensible, maintainable net functions. but the model 2 free up takes builders’ features to the subsequent point, having built-in Ajax help, the facility to simply integration with the Spring framework, and the facility to take complete good thing about POJOs. Practical Apache Struts 2 net 2.0 Projects exhibits you the way to capitalize upon those good points to construct next–generation internet functions that either enthrall and empower your users.
- Gain an in–depth knowing of the Struts framework, with particular awareness paid to key model 2 features
- Learn the way to reap the benefits of internet 2.0 thoughts along Struts 2 to construct next–generation internet sites
- Follow in addition to the advent of vital recommendations and improvement thoughts in terms of a website venture heavily reminiscent of what you could come across in any firm environment
What you’ll learn
- Build a realistic Struts 2 net 2.0–enabled software undertaking from the floor up
- Enable participation by way of manipulating data
- Share info by means of enforcing robust seek utilities
- Syndicate web pages created utilizing RSS and REST
- Discover complex positive aspects on hand in Struts 2 net framework
- Integrate Ajax frameworks to supply user–friendly, responsive interfaces
- Integrate and use Struts 2 with different frameworks resembling Spring to shape a broader company Java software stack
Who this publication is for
builders who desire a hands–on useful publication demonstrating how internet 2.0 gains are carried out in Struts 2. The viewers might diversity from newbie to complex, because the configuration and simple framework utilization might be defined, in addition to the complex extension beneficial properties. The e-book could additionally attract builders who desire to comprehend the net 2.0 improvement paradigm from an implementation point of view.
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Extra info for Practical Apache Struts2 Web 2.0 projects
Example text
Static Parameters Interceptor staticParams Sets statically defined (param tags in the action’s configuration) values on the action. Roles Interceptor roles Allows the action to be executed only if the user is one of the configured roles. Timer Interceptor timer Provides simple profiling information in the form of how long the action takes to execute. Token Interceptor token Checks the action for a valid token to prevent duplicate form submission. Token Session Interceptor tokenSession Same as token, but for invalid tokens, the submitted data is stored in the session.
An overview of the request walk-through The Request Initiation The request-response cycle starts and finishes from the user’s web browser. A URL that represents an action can be entered as a URL directly into the browser’s address bar, or it can be generated by the framework when the user clicks on a link or submits a form. action. Configuration files for the web application determine which URLs are handled by the Struts2 framework and which aren’t. Usually, all requests for an entire web context or installed application are forwarded to the Struts2 servlet filter, and it makes the decision.
Performs cleanup: To ensure that no memory leaks occur, the filter automatically performs cleanup of the ActionContext object. When the ActionProxy class instance is created and configured, the execute() method is invoked. This signals that the preparation of the action is complete, and the real processing of the action is about to start. The Action Invocation The ActionInvocation object manages the execution environment and contains the conversational state of the action being processed. This class is the core of the ActionProxy class.