I have got the problem while define the custom message in acegi with spring.

 Reading the reference guide does not help me, since following code snip from it does not work:

<bean id="messageSource" class="org.springframework.context.support.Reloada bleResourceBundleMessageSource">

<property name="basename"><value>my/project/securitymessages</value></property>

</bean>

After reading the Source Code of Acegi, I have got the following idea:

<bean id="messageSource" class="org.acegisecurity.AcegiMessageSource">

<property name="basename"><value>my/project/securitymessages</value></property>

</bean>

This bean definition works. I have no idea, if the reference guide is wrong or I simply used the MessagesSource otherwise than expected, but since it works for now, it is fine for me and fine for you, too. I hope .