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The
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Struts
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1
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plugin INLINE
allows you to use existing Struts 1 Actions and ActionForms in Struts 2 applications
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This plugin provides a generic Struts 2 Action class to wrap an existing Struts 1 Action, org.apache.struts2.s1.Struts1Action
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.
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The
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wrapper
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class
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provides
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the
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expected
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calls
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to
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the
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legacy
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Struts
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1
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Action
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and
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ActionForm,
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converting
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incoming
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and
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outgoing
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objects
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into
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the
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expected
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forms.
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It
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works
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by
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using
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the
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technique
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that
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uses
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a
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single
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Object
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as
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the
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model
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for
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every
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page,
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very
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similar
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to
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how
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the
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Struts
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1
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ActionForm
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works.
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The
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plugin
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also
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provides
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several
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interceptors
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to
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emulate
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Struts
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1
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logic:
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org.apache.struts2.s1.ActionFormValidatorInterceptor
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- -
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- Integrates
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- the
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- validation
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- of
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- ActionForms
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- into
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- the
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- workflow
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- of
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- Struts
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- 2
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org.apache.struts2.s1.ActionFormResetInterceptor
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- -
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- Calls
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- the
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reset()
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- method
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- on
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- any
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- discovered
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- ActionForms
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The Struts 1 plugin is currently only intended to allow you to run Strust 1 actions inside a Struts 2 application. It DOES NOT allow you to continue to use the Struts 1 tag libraries in your JSPs. Your JSPs must be converted to use the Struts 2 tag library.
There is a JIRA ticket open for enhancing this plugin to allow a more seamless transition from Struts 1 to Struts 2 by supporting continued use of the Struts 1 tag libraries in JSPs, however, there is not a scheduled time frame for that functionality to be made available. (Patches are welcomed!)
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Features
- Can use Struts 1 Actions and ActionForms with no code changes
- Supports Commons Validator-enabled ActionForms
Usage
To use existing Struts 1 Actions and ActionForms in a Struts 2 application, create a normal Struts 2 configuration package in struts.xml, but have it extend struts1-default. The struts1-default package contains several interceptors and a default interceptor stack that work the plugin into the Struts 2 request process.
In the most simple case, where you have a Struts 1 Action that you want to use in Struts 2, configure a Struts 2 action using the wrapper:
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Most likely,
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you
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will
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have
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an
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ActionForm
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that
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your
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Struts
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1
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Action
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expects.
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To
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use
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an
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ActionForm,
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the
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setup
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is
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a
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little
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more
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complicated
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because
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you'll
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need
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an
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interceptor
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that
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manages
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the
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creation
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and
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scope
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(to
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support
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request
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and
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session
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scoping
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like
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Struts
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1)
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of
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the
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ActionForm.
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Example
This example shows a few Struts 1 Actions, a session-scoped ActionForm, and validation that uses Commons Validator:
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Settings
This plugin doesn't
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support
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any
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global
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settings.
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Installation
This plugin can be installed by copying the plugin jar into your application's /WEB-INF/lib
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directory.
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It
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will
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need
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the
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Struts
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1
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jar
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in
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order
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to
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function
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correctly.
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