SpringはどうやってDIしているのか？ #jjug_ccc

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4QSJOH͸ Ͳ͏΍ͬͯ%*͍ͯ͠Δͷ͔ʁ ++6($$$GBMM CBUJ UXJUUFS!CBUJ@

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4QSJOH$PSFͱ %*ίϯςφ

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ຊࢿྉͰ࢖༻͢Δ4QSJOU'SBNFXPSLͷόʔδϣϯ͸Ͱ͢ 3

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4QSJOH$PSF5FDIOPMPHJFT • 4QSJOH'SBNFXPSLͷυΩϡϝϯτΛݟͯΈΔ • ʮᶙ$PSF5FDIOPMPHJFTʯ 4

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4QSJOH$PSF5FDIOPMPHJFT • 5IF*P$DPOUBJOFS • 3FTPVSDFT • 7BMJEBUJPO %BUB#JOEJOH BOE5ZQF$PODFSTJPO • 4QSJOH&YQSFTTJPO-BOHVBHF 4Q&- • "TQFDU0SJFOUFE1SPHSBNNJOHXJUI4QSJOH • 4QSJOH"01"1*T 5

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4QSJOH$PSF5FDIOPMPHJFT • 5IF*P$DPOUBJOFS • 3FTPVSDFT • 7BMJEBUJPO %BUB#JOEJOH BOE5ZQF$PODFSTJPO • 4QSJOH&YQSFTTJPO-BOHVBHF 4Q&- • "TQFDU0SJFOUFE1SPHSBNNJOHXJUI4QSJOH • 4QSJOH"01"1*T 6 今日話すのはここ

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4QSJOHͷ%* 7 @Configuration @ComponentScan public class MyApp { public static void main(String[] args) { ApplicationContext c = new AnnotationConfigApplicationContext(MyApp.class); HelloWorldService helloWorldService = c.getBean(HelloWorldService.class); helloWorldService.helloWorld(); } }

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@Configuration @ComponentScan public class MyApp { public static void main(String[] args) { ApplicationContext c = new AnnotationConfigApplicationContext(MyApp.class); HelloWorldService helloWorldService = c.getBean(HelloWorldService.class); helloWorldService.helloWorld(); } } 4QSJOHͷ%* 8 @ConfigurationアノテーションがついてるクラスがBeanの設定を行うクラス（Bean = Springの管理対象となるインスタンス）

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@Configuration @ComponentScan public class MyApp { public static void main(String[] args) { ApplicationContext c = new AnnotationConfigApplicationContext(MyApp.class); HelloWorldService helloWorldService = c.getBean(HelloWorldService.class); helloWorldService.helloWorld(); } } 4QSJOHͷ%* 9 @ComponentScanアノテーションをつけると、同パッケージ配下からBean 定義を探してくれる

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10 @Component public class PrintService { public void print(String s) { System.out.println(s); } } @Component public class HelloWorldService { private PrintService printService; @AutoWired public HelloWorldService(PrintService printService) { this.printService = printService; } public void helloWorld() { printService.print("Hello, World!"); } }

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11 @Component public class PrintService { public void print(String s) { System.out.println(s); } } @Component public class HelloWorldService { private PrintService printService; @AutoWired public HelloWorldService(PrintService printService) { this.printService = printService; } public void helloWorld() { printService.print("Hello, World!"); } } @Componentアノテーションがついてるとスキャンの対象となるBean定義 @Controllerや@Serviceなども同じ

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12 @Component public class PrintService { public void print(String s) { System.out.println(s); } } @Component public class HelloWorldService { private PrintService printService; @AutoWired public HelloWorldService(PrintService printService) { this.printService = printService; } public void helloWorld() { printService.print("Hello, World!"); } } @AutoWireアノテーションをつけると BeanをDIしてくれる

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4QSJOHͷίʔυΛಡΜͰΈͨ

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14 • ͖ͬ͞ͷίʔυΛಡΜͰ͍͘ MyApp#main @Configuration @ComponentScan public class MyApp { public static void main(String[] args) { ApplicationContext c = new AnnotationConfigApplicationContext(MyApp.class); HelloWorldService helloWorldService = c.getBean(HelloWorldService.class); helloWorldService.helloWorld(); } }

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#FBOఆٛͷొ࿥

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@Configuration @ComponentScan public class MyApp { public static void main(String[] args) { ApplicationContext c = new AnnotationConfigApplicationContext(MyApp.class); HelloWorldService helloWorldService = c.getBean(HelloWorldService.class); helloWorldService.helloWorld(); } } 16 MyApp#main コンストラクタにConfigurationアノテーションがついてるクラスを渡す

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17 AnnotationConﬁgApplicationContext#new public AnnotationConfigApplicationContext( Class>... annotatedClasses) { this(); register(annotatedClasses); refresh(); }

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18 public AnnotationConfigApplicationContext( Class>... annotatedClasses) { this(); register(annotatedClasses); refresh(); } AnnotationConﬁgApplicationContext#new 引数なしのコンストラクタを呼ぶ

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19 • ҎԼͷΠϯελϯεΛϑΟʔϧυʹอ࣋ • "OOPUBUFE#FBO%FpOJUJPO3FBEFS • $MBTT1BUI#FBO%FpOJUJPO4DBOOFS AnnotationConﬁgApplicationContext#new public AnnotationConfigApplicationContext() { this.reader = new AnnotatedBeanDefinitionReader(this); this.scanner = new ClassPathBeanDefinitionScanner(this); }

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20 public AnnotationConfigApplicationContext( Class>... annotatedClasses) { this(); register(annotatedClasses); refresh(); } AnnotationConﬁgApplicationContext#new registerメソッドにClass を渡してる

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#FBOఆٛొ࿥ͷྲྀΕ 21 AnnotationConﬁg ApplicationContext registerメソッド

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#FBOఆٛొ࿥ͷྲྀΕ 22 AnnotationConﬁg ApplicationContext AnnotatedBean DeﬁnitionReader registerメソッド

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23 BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒ !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register

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24 BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒ !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register Bean定義はBeanDefinitionで表現される

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25 BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒ !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register ConditionalアノテーションとConditionインタフェースでBean登録をスキップできる http://docs.spring.io/spring/docs/current/spring-framework-reference/ htmlsingle/#beans-java-conditional

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26 BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒ !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register 今回はAnnotationBeanNameGeneratorによって決められる。 http://docs.spring.io/spring/docs/current/spring-framework-reference/ htmlsingle/#beans-scanning-name-generator

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27 BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒ !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register BeanDefinitionHolderはBean名と BeanDefinitionを保持する

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28 BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒ !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register AnnotationScopeMetadataResolverで@Scope アノテーションのproxyModeを読み取る http://docs.spring.io/spring/docs/current/spring-framework-reference/ htmlsingle/#beans-java-scoped-proxy

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29 BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒ !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register 次はここを見ていく

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30 AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register BeanDefinitionReaderUtils.registerBeanDefinition( definitionHolder, this.registry); • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ

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31 AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register BeanDefinitionReaderUtils.registerBeanDefinition( definitionHolder, this.registry); • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ さっき作ったMyAppクラスのBean定義を保持するBeanDefinitionHolder

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32 AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register BeanDefinitionReaderUtils.registerBeanDefinition( definitionHolder, this.registry); • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ this.registryって何？

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33 public AnnotationConfigApplicationContext() { this.reader = new AnnotatedBeanDefinitionReader(this); this.scanner = new ClassPathBeanDefinitionScanner(this); } AnnotationBeanDefinitionReaderの this.registryに、 AnnotationConfigApplicationContextが代入される

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34 AnnotationConﬁgApplicationContext#new => #register => AnnotatedBeanDeﬁnitionReader#register BeanDefinitionReaderUtils.registerBeanDefinition( definitionHolder, this.registry); • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ this.registryは AnnotationConfigApplicationContext

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#FBOఆٛొ࿥ͷྲྀΕ 35 AnnotationConﬁg ApplicationContext AnnotatedBean DeﬁnitionReader registerメソッド

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#FBOఆٛొ࿥ͷྲྀΕ 36 AnnotationConfig ApplicationContext AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> Bean定義を表現するクラス

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#FBOఆٛొ࿥ͷྲྀΕ 37 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> AnnotationConfigApplicationContextは BeanDefinitionRegistryのサブクラス

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#FBOఆٛొ࿥ͷྲྀΕ 38 AnnotationConfig ApplicationContext GenericApplication Context BeanDefinition Registry AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> BeanDefinition ReaderUtils registerBeanDefinitionメソッド beanDefinitionHolderとregistryが引数

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39 …=> AnnotatedBeanDefinitionReader#register => #registerBean  => BeanDefinitionReaderUtils#registerBeanDefinition String beanName = definitionHolder.getBeanName(); registry.registerBeanDefinition(beanName, definitionHolder.getBeanDefinition()); registryにBeanの名前と Bean定義を登録する

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ͭ·Γ 40 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> 1 N BeanDefinitionReaderUtils 経由で登録される BeanDefinitionR eaderUtils

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ͭ·Γ 41 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> 1 N 登録処理は registerBeanDefinitionメソッド BeanDefinitionR eaderUtils

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42 this.beanFactory.registerBeanDefinition(beanName, beanDefinition); …=> BeanDefinitionReaderUtils#registerBeanDefinition  => GenericApplicationContext#registerBeanDefinition this.beanFactoryは、 DefaultListableBeanFactoryインスタンスで初期化されている

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%FGBVMU-JTUBCMF#FBO'BDUPSZ

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%FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ 44

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%FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ 45

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ͭ·Γ 46 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> 1 N BeanDefinitionR eaderUtils 登録するのは registerBeanDefinitionメソッド

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ͭ·Γ 47 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> 1 N DefaultListable BeanFactory registerBeanDefinitionメソッドに委譲 BeanDefinitionR eaderUtils

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ͭ·Γ 48 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry AnnotatedBean DefinitionReader AnnotatedGeneric BeanDefinition <ੜ੒> 1 N DefaultListable BeanFactory BeanDefinitionはインスタンス変数の ConcurrentHashMapに保存される BeanDefinitionR eaderUtils

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public AnnotationConfigApplicationContext( Class>... annotatedClasses) { this(); register(annotatedClasses); refresh(); } ͜͜·ͰΛ੔ཧ 49 • ͕͜͜ऴΘͬͨ • .Z"QQΫϥεͷ#FBOఆٛΛొ࿥ͨ͠

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͜͜·ͰΛ੔ཧ 50 AnnotationConfig ApplicationContext Generic ApplicationContext AnnotatedBean DefinitionReader DefaultListable BeanFactory BeanDefinition ReaderUtils Class BeanDefinition Holder BeanDefinition Concurrent HashMap BeanDefinition BeanDefinition

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࣍͸ίϯϙʔωϯτεΩϟϯ

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52 public AnnotationConfigApplicationContext( Class>... annotatedClasses) { this(); register(annotatedClasses); refresh(); } AnnotationConﬁgApplicationContext#new • ࣍͸ͬͪ͜ • SFGSFTIϝιου͸਌ΫϥεͰ͋Δ"CTUSBDU"QQMJDBUJPO$POUFYUͰ࣮ ૷͞Ε͍ͯΔ

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53 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ

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54 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ ログを出力したりインスタンス変数を初期化したり

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55 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ さっきも出てきた DefaultListableBeanFactoryインスタンスに対していろいろ設定する

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%FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ 56

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57 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ 次はここ

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58 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ PostProcessorRegistrationDelegate に委譲する

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59 …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ

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60 J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ Springフレームワーク内部用？今回のケースだと実は ConfigurationClassPostProcessorが既に登録されている …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors

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61 J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ Springフレームワーク内部用？今回のケースだと実は ConfigurationClassPostProcessorが既に登録されている AnnotatedBeanDefinitionReaderのコンストラクタで AnnotationConfigUtils.registerAnnotationConfigP rocessorsを呼び出しBean定義を登録してる …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors

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62 J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ 自前のBeanFactoryPostProcessor 今回は定義していない …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors

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63 ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ ᶄ QPTU1SPDFTT#FBO'BDUPSZ ͕࣮ߦ͞ΕΔɻ …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors

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64 ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ ᶄ QPTU1SPDFTT#FBO'BDUPSZ ͕࣮ߦ͞ΕΔɻコンポーネントスキャンしてBean定義を登録する …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors

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ίϯϙʔωϯτεΩϟϯͷྲྀΕ 65 AnnotationConﬁg ApplicationContext Generic ApplicationContext BeanDeﬁnition Registry DefaultListable BeanFactory

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ίϯϙʔωϯτεΩϟϯͷྲྀΕ 66 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry DefaultListable BeanFactory ConfigurationClass PostProcessor BeanFactoryPostProcessor として呼び出される

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ίϯϙʔωϯτεΩϟϯͷྲྀΕ 67 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry DefaultListable BeanFactory ConfigurationClass PostProcessor ClassPathScanningCandidate ComponentProvider ݺͼग़͠

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ίϯϙʔωϯτεΩϟϯͷྲྀΕ 68 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinitionR egistry DefaultListable BeanFactory ConfigurationClassP ostProcessor .classϑΝΠϧ ClassPathScanningCandidate ComponentProvider ݺͼग़͠ ୳͢ PathMatchingResourcePatternResolver を使ってclassファイルを探す File#listFilesを使って探索する

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ίϯϙʔωϯτεΩϟϯͷྲྀΕ 69 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinitionR egistry DefaultListable BeanFactory ConfigurationClassP ostProcessor .classϑΝΠϧ ClassPathScanningCandidate ComponentProvider ݺͼग़͠ ୳͢&ղੳ ClassReaderと AnnotationMetadataReadingVisitorを使ってclassファイルのバイトコードを解析する

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ίϯϙʔωϯτεΩϟϯͷྲྀΕ 70 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry DefaultListable BeanFactory ConfigurationClass PostProcessor .classϑΝΠϧ ScannedBean Definition ClassPathScanningCandidate ComponentProvider ݺͼग़͠ ୳͢&ղੳ ੜ੒ Beanとなるクラスのみ

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ίϯϙʔωϯτεΩϟϯͷྲྀΕ 71 AnnotationConfig ApplicationContext Generic ApplicationContext BeanDefinition Registry DefaultListable BeanFactory ConfigurationClassP ostProcessor .classϑΝΠϧ ScannedBean Definition ClassPathScanningCandidate ComponentProvider ݺͼग़͠ ୳͢&ղੳ ੜ੒ 1 N BeanDefinitionReaderUtilsによって登録される最初のBean定義の登録と同じ

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72 ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ ᶄ QPTU1SPDFTT#FBO'BDUPSZ ͕࣮ߦ͞ΕΔɻコンポーネントスキャンが終わった …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors

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73 ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ ᶄ QPTU1SPDFTT#FBO'BDUPSZ ͕࣮ߦ͞ΕΔɻ ConfigurationClassEnhancer#enhance でMyAppをCGLIBのサブクラス化 AOPでプロキシ化する時にCGLIBを使う …=> AbstractApplicationContext#refresh => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors

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74 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ 終わり

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75 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ PostProcessorRegistrationDelegateを使ってbeanFactoryに登録する http://docs.spring.io/spring/docs/current/spring-framework- reference/htmlsingle/#beans-factory-extension-bpp

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76 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ メッセージの初期化 http://docs.spring.io/spring/docs/current/spring-framework- reference/htmlsingle/#context-functionality-messagesource イベントリスナー http://docs.spring.io/spring/docs/current/spring-framework- reference/htmlsingle/#context-functionality-events

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࣍͸#FBOΛੜ੒

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78 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ ここを見ていく

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79 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh • TJOHMFUPOείʔϓͷ#FBOΛੜ੒ finishBeanFactoryInitialization(beanFactory); beanFactory.preInstantiateSingletons(); beanFactoryはDefaultListableBeanFactory

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80 • ͬ͘͟Γͱ͜Μͳײ͡ • #FBO໊͔Β਌#FBOఆٛΛϚʔδͨ͠#FBO%FpOJUJPOΛऔಘ͢Δ IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMFCFBOT SFGFMFNFOU • ந৅ΫϥεͰ͸ͳ͘ɺTJOHMFUPOείʔϓͰɺ-B[Z*OJUͰ͸ͳ͍΋ͷʹ ରͯ͠HFU#FBOϝιουΛݺͿ IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMFCFBOT GBDUPSZMB[ZJOJU for (String beanName : this.beanDefinitionNames) { RootBeanDefinition bd = getMergedLocalBeanDefinition(beanName); if (!bd.isAbstract() && bd.isSingleton() && !bd.isLazyInit()) { getBean(beanName); } }

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"CTUSBDU#FBO'BDUPSZ HFU#FBO

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• #FBOఆٛͷEFQFOETPOଐੑΛղܾ IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMFCFBOT GBDUPSZEFQFOETPO String[] dependsOn = mbd.getDependsOn(); if (dependsOn != null) { AbstractBeanFactory#getBean

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• #FBOΛੜ੒͢Δͱ͜Ζʂ • είʔϓʹԠͯ͡෼ذ • ࠓճ͸TJOHMFUPOείʔϓͷ৔߹Λݟ͍ͯ͘ // Create bean instance. if (mbd.isSingleton()) { } else if (mbd.isPrototype()) { } else { } AbstractBeanFactory#getBean

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HFU#FBOͷྲྀΕ 84 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory getBeanメソッド

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HFU#FBOͷྲྀΕ 85 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry getSingleton メソッド

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%FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ 86

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87 DefaultSingletonBeanRegistry#getSingleton • TJOHMFUPOείʔϓͷ#FBOΛੜ੒ࡁΈ͔Ͳ͏͔Λௐ΂Δ • ੜ੒ࡁΈͷ৔߹͸ͦΕΛฦ͚ͩ͢ synchronized (this.singletonObjects) { Object singletonObject = this.singletonObjects.get(beanName); if (singletonObject == null) { // Beanを生成する処理 } return (singletonObject != NULL_OBJECT ? singletonObject : null); }

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HFU#FBOͷྲྀΕ 88 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry getSingleton メソッド

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HFU#FBOͷྲྀΕ 89 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry createBean メソッド

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%FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ 90

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91 AbstractAutowireCapableBeanFactory#createBean J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒ • ίϯετϥΫλΠϯδΣΫγϣϯ JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ

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92 AbstractAutowireCapableBeanFactory#createBean J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒ • ίϯετϥΫλΠϯδΣΫγϣϯ JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ

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HFU#FBOͷྲྀΕ 93 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry createBean メソッド

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HFU#FBOͷྲྀΕ 94 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry resolveBeanClass メソッド

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HFU#FBOͷྲྀΕ 95 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListableB eanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry @ConfigurationのBean定義についてはClassインスタンスを返すだけコンポーネントスキャンしたBean定義についてはClassインスタンスを生成する必要がある

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HFU#FBOͷྲྀΕ 96 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry ClassLoaderインスタンスを保持してる

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HFU#FBOͷྲྀΕ 97 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListableBea nFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry ClassLoaderとBeanDefinitionが持つクラス名を引数で渡し、Class インスタンスを取得する ClassLoader#loadClass ClassUtils

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98 AbstractAutowireCapableBeanFactory#createBean J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒ • ίϯετϥΫλΠϯδΣΫγϣϯ JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ

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99 @Component public class PrintService { public void print(String s) { System.out.println(s); } } @Component public class HelloWorldService { private PrintService printService; @AutoWired public HelloWorldService(PrintService printService) { this.printService = printService; } public void helloWorld() { printService.print("Hello, World!"); } }

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100 AbstractAutowireCapableBeanFactory#createBean • ίϯετϥΫλҾ਺ͷ$POTUSVDUPSΠϯελϯεΛऔಘ͢Δ෦෼ • ࠓճͷαϯϓϧͩͱ)FMMP8PSME4FSWJDFͷ#FBOఆٛʹରͯ͠ɺ 1SJOU4FSWJDFΫϥεͷ$POTUSVDUPSΠϯελϯεΛऔಘ͢Δ • Ұ෦ͷ#FBO1PTU1SPDFTTPSΛ࢖༻ͯ͠औಘ͢Δ • 4NBSU*OTUBOUJBUJPO"XBSF#FBO1PTU1SPDFTTPSΛܧঝͨ͠ #FBO1PTU1SPDFTTPS • ࠓճ͸"VUPXJSF"OOPUBUJPO#FBO1PTU1SPDFTTPS͕֘౰ Constructor>[] ctors = determineConstructorsFromBeanPostProcessors( beanClass, beanName);

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101 AbstractAutowireCapableBeanFactory#createBean • #FBO%FpOJUJPOͱऔಘͨ͠$POTUSVDUPSΠϯελϯεΛ࢖ͬͯίϯε τϥΫλΠϯδΣΫγϣϯ͢Δ෦෼ • ࠓճͷαϯϓϧͩͱɺҎԼΛ࢖ͬͯίϯετϥΫλΠϯδΣΫγϣ ϯ͢Δ • )FMMP8PSME4FSWJDFͷ#FBO%FpOJUJPO • 1SJOU4FSWJDFͷ$POTUSVDUPSΠϯελϯε new ConstructorResolver(this) .autowireConstructor(beanName, mbd, ctors, explicitArgs);

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102 Abstract BeanFactory AbstractAutowireCapable BeanFactory Constructor Resolver getBean ここがBean生成のスタート HelloWorldServiceのBeanを生成しようとしてる

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103 Abstract BeanFactory AbstractAutowireCapable BeanFactory Constructor Resolver getBean HelloWorldServiceにPrintService をコンストラクタインジェクションをしようとしてるとこ

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104 Abstract BeanFactory AbstractAutowireCapable BeanFactory Constructor Resolver DefaultListable BeanFactory getBean PrintServiceのBeanを取得するためにresolveDependencyメソッドを呼ぶ

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105 Abstract BeanFactory AbstractAutowireCapable BeanFactory Constructor Resolver DefaultListable BeanFactory getBean Bean生成のため再帰的に getBeanを呼ぶことになる

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106 Abstract BeanFactory AbstractAutowireCapable BeanFactory Constructor Resolver DefaultListable BeanFactory getBean PrintServiceのBeanが返ってくる

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107 Abstract BeanFactory AbstractAutowireCapable BeanFactory Constructor Resolver SimpleInstantiation Strategy DefaultListable BeanFactory BeanUtils getBean Constructor#newInstanceと PrintServiceのBeanを使って HelloWorldServiceのBeanを生成

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108 Abstract BeanFactory AbstractAutowireCapable BeanFactory Constructor Resolver SimpleInstantiation Strategy DefaultListable BeanFactory BeanUtils getBean Constructor#newInstanceと PrintServiceのBeanを使って HelloWorldServiceのBeanを生成コンストラクタインジェクション！

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109 AbstractAutowireCapableBeanFactory#createBean J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒ • ίϯετϥΫλΠϯδΣΫγϣϯ JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ populateBeanメソッド内で実施してる initializeBeanメソッド内で実施してる

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HFU#FBOͷྲྀΕΛ੔ཧ 110 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry createBean

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HFU#FBOͷྲྀΕΛ੔ཧ 111 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry Beanの出来上がり！

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HFU#FBOͷྲྀΕΛ੔ཧ 112 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry 出来上がったBeanを後で使えるように取っておく

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HFU#FBOͷྲྀΕΛ੔ཧ 113 AnnotationConﬁg ApplicationContext Generic ApplicationContext DefaultListable BeanFactory Abstract BeanFactory AbstractAutowireCapable BeanFactory DefaultSingleton BeanRegistry getBeanメソッド終了！

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114 AnnotationConﬁgApplicationContext#new => AbstractApplicationContext#refresh ४උ͢Δ #FBO'BDUPSZΛ४උ͢Δ #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢ #FBO1PTU1SPDFTTPSΛొ࿥͢Δ ͦͷଞ΋Ζ΋Ζ TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ 終わり

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115 public AnnotationConfigApplicationContext( Class>... annotatedClasses) { this(); register(annotatedClasses); refresh(); } AnnotationConﬁgApplicationContext#new • ͍ͭʹ"OOPUBUJPO$POpH"QQMJDBUJPO$POUFYUͷίϯετϥΫλ͕ऴ Θͬͨɾɾɾ

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@Configuration @ComponentScan public class MyApp { public static void main(String[] args) { ApplicationContext c = new AnnotationConfigApplicationContext(MyApp.class); HelloWorldService helloWorldService = c.getBean(HelloWorldService.class); helloWorldService.helloWorld(); } } ࠷ॳͷίʔυ 117 • "QQMJDBUJPO$POUFYUͷHFU#FBO͸ɺ͖ͬ͞ग़͖ͯͨ "CTUSBDU#FBO'BDUPSZHFU#FBOΛݺΜͰΔ͚ͩ • ੜ੒ࡁΈͷTJOHMFUPOείʔϓͷ#FBOΛऔಘͰ͖Δ

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;Γ͔͑ͬͯΈΔ

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• ;Γ͔͑ͬͯΈΔ • #FBOఆٛͷొ࿥ • ίϯϙʔωϯτεΩϟϯ • #FBOੜ੒ʢίϯετϥΫλΠϯδΣΫγϣϯʣ 119

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• #FBOఆٛͷొ࿥ • "OOPUBUFE#FBO%FpOJUJPO3FBEFSͷίϯετϥΫλͰϑϨʔϜ ϫʔΫͰ࢖͏#FBOఆ͕ٛొ࿥͞ΕΔ • "OOPUBUFE#FBO%FpOJUJPO3FBEFSͰ!$POpHVSBUJPO͕͍ͭͯ ΔΫϥεͷ#FBOఆٛΛ#FBO%FpOJUJPOʹม׵͢Δ • #FBO%FpOJUJPO͕࠷ऴతʹอଘ͞ΕΔ৔ॴ͸ɺ %FGBVMU-JTUBCMF#FBO'BDUPSZͷΠϯελϯεม਺ 120

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• ίϯϙʔωϯτεΩϟϯ • $POpHVSBUJPO$MBTT1PTU1SPDFTTPSQPTU1SPDFTT#FBO%FpOJ UJPO3FHJTUSZ͔Β࢝·Δ • ʢ"OOPUBUFE#FBO%FpOJUJPO3FBEFSͷίϯετϥΫλͰ#FBO ొ࿥͞ΕͯΔʣ 121

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• #FBOੜ੒ʢίϯετϥΫλΠϯδΣΫγϣϯʣ • "CTUSBDU#FBO'BDUPSZHFU#FBO͔Β࢝·Δ • "VUPXJSFE"OOPUBUJPO#FBO1PTU1SPDFTTPSͰίϯετϥΫλ ΠϯδΣΫγϣϯͷҾ਺Λղܾ • ʢ"OOPUBUFE#FBO%FpOJUJPO3FBEFSͷίϯετϥΫλͰ#FBO ొ࿥͞ΕͯΔʣ 122

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• #FBO%FpOJUJPO3FBEFS • #FBO%FpOJUJPOΛੜ੒ • $POpHVSBUJPO$MBTT1PTU1SPDFTTPSΛొ࿥ • "VUPXJSFE"OOPUBUJPO#FBO1PTU1SPDFTTPSΛొ࿥ • %FGBVMU-JTUBCMF'BDUPSZ • #FBO%FpOJUJPOΛอ࣋ • #FBOੜ੒ 123

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• ͋Εʁ • #FBO%FpOJUJPO3FBEFSͱ%FGBVMU-JTUBCMF#FBO'BDUPSZ͑͋͞Ε ͹ಈ͘Μ͡Όͳ͍ʁ • ʢ"QQMJDBUJPO$POUFYU͍Βͳ͘ͳ͍ʁʣ • ࣮ࡍɺࢼͯ͠ΈͨΒಈ͍ͨ 124

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125 // 準備 DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory(); AnnotatedBeanDefinitionReader reader = new AnnotatedBeanDefinitionReader(beanFactory); // 明示的にaddBeanPostProcessorしないとAbstractBeanFactoryの // フラグ(hasInstantiationAwareBeanPostProcessors）が立たなかった beanFactory.addBeanPostProcessor( beanFactory.getBean(AutowiredAnnotationBeanPostProcessor.class)); // Bean定義の登録 reader.register(MyApp.class); // コンポーネントスキャン ConfigurationClassPostProcessor bpp = beanFactory.getBean(ConfigurationClassPostProcessor.class); bpp.setEnvironment(new StandardEnvironment()); bpp.postProcessBeanDefinitionRegistry(beanFactory); // Beanの取得 beanFactory.getBean(HelloWorldService.class).helloWorld();

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;Γ͔͑ͬͯΈΔ 126 • %*ʹؔ͢ΔΞϨίϨΛ΍Δͷʹඞཁͳͷ͸ɺ#FBO'BDUPSZͱ #FBO%FpOJUJPO3FBEFSͩͬͨ • IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMF DPOUFYUJOUSPEVDUJPODUYWTCFBOGBDUPSZ • %FGBVMU-JTUBCMF#FBO'BDUPSZͷ࢓ࣄଟ͗͢ʂܧঝ͕ෳࡶʂ • ֤ΠϯλϑΣʔεͷ໾ׂΛͬ͘͟Γ೺Ѳ͢ΔͱಡΈ΍͘͢ͳΔ • ࢥͬͯͨΑΓ΋৭ʑͳػೳɺ֦ுϙΠϯτ͕ఏڙ͞Ε͍ͯͨ • ίʔυΛಡΜͩ͜ͱ͸ɺ͍͔ͭ໾ʹཱͭɾɾɾ͔΋ʂ

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