Spring 4.1 @Qualifier doesnt'work

Question

I have classes, xml configuration file and error stack trace like this. I have no idea why @Qualifier doesn\'t work. I see on errors that he don\'t even do anything.

Answer 1

@Qualifier(name="..") annotation and give the name of the bean that we want Spring to inject

and name of your beans are size1 and size2 .

so try

   @Qualifier("size1")

Answer 2

@Qualifier is used to reference a bean by its name or id. Since it can't find an xml entry that has a name or id of 'small' it tries to match by type, of which it found two instances of Size.

The following would work:

  <bean id="small" class="com.tests.test2.Size">      
    <property name="height" value="2"/>
    <property name="width" value="1"/>
</bean>

Though it appears you would like to treat instances of Size as pre-configured beans. If that were the case you could declare instances of Dog in your xml file and refer to Size beans ... something like this:

  <bean id="rex" class="com.tests.test2.SimpleDog">
     <property name="name" value="Puppy" />
     <property name="size" ref="size1"/>
  </bean>