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This interceptor runs the action through the standard validation framework, which in turn checks the action against
any validation rules (found in files such as ActionClass-validation.xml) and adds field-level and action-level
error messages (provided that the action implements
com.opensymphony.xwork.ValidationAware ). This interceptor
is often one of the last (or second to last) interceptors applied in a stack, as it assumes that all values have
already been set on the action.
This interceptor does nothing if the name of the method being invoked is specified in the excludeMethods
parameter. excludeMethods accepts a comma-delimited list of method names. For example, requests to
foo!input.action and foo!back.action will be skipped by this interceptor if you set the
excludeMethods parameter to "input, back".
Note that this has nothing to do with the
com.opensymphony.xwork.Validateable interface and simply adds
error messages to the action. The workflow of the action request does not change due to this interceptor. Rather,
this interceptor is often used in conjuction with the workflow interceptor.
NOTE: As this method extends off MethodFilterInterceptor, it is capable of
deciding if it is applicable only to selective methods in the action class. See
MethodFilterInterceptor for more info.
Interceptor parameters:
Extending the interceptor:
There are no known extension points for this interceptor.
Example code:
<action name="someAction" class="com.examples.SomeAction">
<interceptor-ref name="params"/>
<interceptor-ref name="validation"/>
<interceptor-ref name="workflow"/>
<result name="success">good_result.ftl</result>
</action>
<-- in the following case myMethod of the action class will not
get validated -->
<action name="someAction" class="com.examples.SomeAction">
<interceptor-ref name="params"/>
<interceptor-ref name="validation">
<param name="excludeMethods">myMethod</param>
</interceptor-ref>
<interceptor-ref name="workflow"/>
<result name="success">good_result.ftl</result>
</action>
author:
Jason Carreira
author:
Rainer Hermanns
author:
Alexandru Popescu
See Also: ActionValidatorManager
See Also: com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor
version:
$Date: 2006-03-18 05:42:54 +0100 (Sa, 18 Mrz 2006) $ $Id: ValidationInterceptor.java 904 2006-03-18 04:42:54Z tmjee $ |
