Struts 2 allows an application to use Java 5 annotations as an alternative to XML and Java properties configuration in many places. This page serves as a reference for all annotations across the framework.
Action Annotations
Action annotations are available when you have Struts 2 scan your classpath for Actions, rather than specifying them individually in XML configuration.
Annotation | Description |
|---|---|
Namespace Annotation | Overrides the namespace of an action |
ParentPackage Annotation | Defines an existing configuration package for the action's package to extend |
Result | Defines an Action Result |
Results | Defines multiple Results |
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This is a work in progress and not yet finished! More complex examples will follow. For now, have a look at the unit tests within the xwork-tiger project path. |
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Interceptor Annotations
To use these annotations, you have to specify the AnnotationWorkflowInterceptor to your interceptor stack.
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If you want to use annotation based validation, you have to annotate the class or interface with Validation Annotation.
These are the standard validator annotations that come with XWork-tiger:
Annotation | Description |
|---|---|
Checks if there are any conversion errors for a field. | |
Checks that a date field has a value within a specified range. | |
Checks that a double field has a value within a specified range. | |
Checks that a field is a valid e-mail address. | |
Validates an expression. | |
Uses an OGNL expression to perform its validator. | |
Checks that a numeric field has a value within a specified range. | |
Validates a regular expression for a field. | |
Checks that a field is non-null. | |
Checks that a String field is not empty. | |
Checks that a String field is of the right length. | |
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Checks that a field is a valid URL. | |
Marker annotation for validation at Type level. | |
Used to group validation annotations. | |
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Use this annotation for your custom validator types. |
Type Conversion Annotations
If the xwork-tigerjar is added to the classpathBy default, you will directly have type conversion support for Maps and Collections using generics.
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