title: Spring in Action Chapter 2 changing XML bean to JavaConfig doesn't pass the test
body: <p>Below is my Bean configuration code, but the configuration doesn't pass the test as it says it failed to load ApplicationContext. Is there something I'm doing wrong? I added @Autowire to methods of each class that's needed (except for interface method), but I still have no idea why it's not loading</p>
  
  <pre><code>package soundsystems;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Configuration;
  
  @Configuration
  public class CDPlayerConfig 
  {
      @Bean
      public CompactDisc sgtPeppers()
      {
          return new SgtPeppers();
      }
  
      @Bean(name = "SgtPepperPlayer")
      public CDPlayer cdPlayer()
      {
          return new CDPlayer(sgtPeppers());
      }
  
      @Bean(name = "AnyCDPlayer")
      public CDPlayer cdPlayer(CompactDisc cd)
      {
          return new CDPlayer(cd);
      }
  
      @Bean
      public BlankDisc reallyBlankDisc()
      {
          return new BlankDisc();
      }
  
      @Bean
      public BlankDisc blankDisc()
      {
          BlankDisc bd = new BlankDisc();
  
          String title = "Sgt. Pepper's Lonely Hearts Club Band";
          String artist = "The Beatles";
  
          List&lt;String&gt; tracks = new ArrayList&lt;String&gt;();
          tracks.add("Sgt. Pepper's Lonely Hearts Club Band");
          tracks.add("With a Little Help from My Friends");
          tracks.add("Lucy in the Sky with Diamonds");
          tracks.add("Getting Better");
          tracks.add("Fixing a Hole");
  
          bd.setTitle(title);
          bd.setArtist(artist);
          bd.setTracks(tracks);
  
          return bd;
      }
  
      @Bean
      public Discography beatlesDiscography()
      {
          Discography dg = new Discography();
  
          String artist = "The Beatles";
          CompactDisc SgtPeppers = new SgtPeppers();
          CompactDisc WhiteAlbum = new WhiteAlbum();
          CompactDisc HardDaysNight = new HardDaysNight();
          CompactDisc Revolver = new Revolver();
  
          List&lt;CompactDisc&gt; cds = new ArrayList&lt;CompactDisc&gt;();
          cds.add(SgtPeppers);
          cds.add(WhiteAlbum);
          cds.add(HardDaysNight);
          cds.add(Revolver);
  
          dg.setArtist(artist);
          dg.setCDs(cds);     
  
          return dg;
      }
  
  }
  
  
  
  package soundsystems;
  
  import static org.junit.Assert.*;
  
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.contrib.java.lang.system.SystemOutRule;
  import org.junit.runner.RunWith;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.test.context.ContextConfiguration;
  import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
  
  @RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration(classes = CDPlayerConfig.class)
  public class CDPlayerTest 
  {
      @Rule
      public final SystemOutRule log = new SystemOutRule().enableLog();
  
      @Autowired
      private CompactDisc cd;
  
      @Autowired
      private MediaPlayer player;
  
      @Test
      public void cdShouldNotBeNull()
      {
          assertNotNull(cd);
      }
  
      @Test
      public void play()
      {
          player.play();
          assertEquals("Playing Sgt. Pepper's Lonely Hearts Club Band" + " by The Beatles\n", log.getLog());
      }
  }
  </code></pre>
  
  <p>Thanks for having a look.</p>
  
  <p>edit: Error</p>
  
  <pre><code>    java.lang.IllegalStateException: Failed to load ApplicationContext
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
      at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
      at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
      at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
      at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
      at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
      at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
      at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
      at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
      at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
      at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
      at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
  Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'AnyCDPlayer': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void soundsystems.CDPlayer.setCompactDisc(soundsystems.CompactDisc); nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [soundsystems.CompactDisc] is defined: expected single matching bean but found 3: blankDisc,sgtPeppers,reallyBlankDisc
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
      at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
      at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:125)
      at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
      at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)
      at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
      ... 25 more
  Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void soundsystems.CDPlayer.setCompactDisc(soundsystems.CompactDisc); nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [soundsystems.CompactDisc] is defined: expected single matching bean but found 3: blankDisc,sgtPeppers,reallyBlankDisc
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:661)
      at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
      ... 41 more
  Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [soundsystems.CompactDisc] is defined: expected single matching bean but found 3: blankDisc,sgtPeppers,reallyBlankDisc
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1126)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:618)
      ... 43 more
  </code></pre>