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And guess what: min and max are indeed the two parameters we just set before ! Using OGNL expressions you can retrieve whatever you want from your action, giving you really nice error messages (we like nice error messages). In fact, you can not only use these expressions in your error messages, but you can even set the min and max parameters dynamically. Different types of employees could have different age requirements - OGNL and polymorphy to the rescue !

More information about Validation

Conclusion

This 'quick intro' turned out a bit longer than I anticipated. We haven't even barely touched the possibilities with WebWork - different templates, IoC (with XWork or Spring), annotations, REST-ful action mappings, components, Hibernate integration, ajax support, pdf/xml/rss/.. generation, groovy, .. . More info on 3th party integration.

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