在不同上下文中具有相同名称的两个bean

Question

I have the following beans in my contexs:

    <!-- Context 1 -->
<beans profile="ldap">
        <bean id="activeDirectoryAuthProvider" class="com.production.ActiveDirectoryLdapAuthenticationProvider">
          <constructor-arg value="${ldap.login.provider.domain}"/>
          <constructor-arg value="${ldap.login.provider.url}" />
          <property name="useAuthenticationRequestCredentials" value="true" />
          <property name="convertSubErrorCodesToExceptions" value="true" />
        </bean>
</beans>

<!-- Context 2 -->

    <bean id="activeDirectoryAuthProvider" class="com.test.TestActiveDirectoryLdapAuthenticationProvider">
      <constructor-arg value="${ldap.login.provider.domain}"/>
      <constructor-arg value="${ldap.login.provider.url}" />
      <property name="useAuthenticationRequestCredentials" value="true" />
      <property name="convertSubErrorCodesToExceptions" value="true" />
    </bean>

My goal is to use the first bean only for production version another one for test purposes.

Namely when I start test based on production context I expect that production bean would be replaced by test bean with needed configuration.

But unfortunately when I tried to create two beans with same name only production bean is created and another one is ignored. Another thing that I noticed that when I tried to change test bean name to: activeDirectoryAuthProvider1 then both beans are successfully created. Can anyone explain why it happen and suggest possible solution how it can be bypassed?

Answer 1

You need to use different contexts for development and production. In each context you define only the relevant bean (ie only 1 bean with a certain name). If you use maven you can put the test/development context under src/test/resources and the production context under src/main/resources

If you do not use maven there are other approaches. You can find an example here: http://mrhaki.blogspot.it/2009/02/use-spring-configurator-to-support.html

Answer 2

Take a look at Spring Profiles you can have one for test and one for prod.

<beans profile="test">
     <!-- Context 1 -->

          <bean id="activeDirectoryAuthProvider" class="com.production.ActiveDirectoryLdapAuthenticationProvider">
             <constructor-arg value="${ldap.login.provider.domain}"/>
             <constructor-arg value="${ldap.login.provider.url}" />
             <property name="useAuthenticationRequestCredentials" value="true" />
             <property name="convertSubErrorCodesToExceptions" value="true" />
          </bean>
</beans>

<beans profile="prod">
      <!-- Context 2 -->

       <bean id="activeDirectoryAuthProvider" class="com.test.TestActiveDirectoryLdapAuthenticationProvider">
           <constructor-arg value="${ldap.login.provider.domain}"/>
           <constructor-arg value="${ldap.login.provider.url}" />
           <property name="useAuthenticationRequestCredentials" value="true" />
           <property name="convertSubErrorCodesToExceptions" value="true" />
       </bean>
</beans>

You can set the active profile in a various ways. Check the docs.