From 8f4df6b903866dac1725832d06ee7382fc89d0ce Mon Sep 17 00:00:00 2001 From: orrym Date: Sat, 27 Jan 2018 18:11:07 +0200 Subject: [PATCH] Add XML, JavaConfig and Autowired examples. --- .../BeanInjectorAutowiredExample.java | 18 ++++++++++++ .../autowiredexample/SimpleAutowiredBean.java | 16 ++++++++++ .../SimpleAutowiredDependency.java | 12 ++++++++ .../javaconfigexample/BeanInjectorConfig.java | 29 +++++++++++++++++++ .../BeanInjectorJavaConfigExample.java | 19 ++++++++++++ .../SimpleBeanConstructorInjection.java | 16 ++++++++++ .../SimpleBeanSetterInjection.java | 16 ++++++++++ .../javaconfigexample/SimpleDependency.java | 9 ++++++ .../BeanInjectorXMLExample.java | 17 +++++++++++ .../SimpleBeanConstructorInjection.java | 16 ++++++++++ .../SimpleBeanSetterInjection.java | 16 ++++++++++ .../xmlconfigexample/SimpleDependency.java | 9 ++++++ .../src/main/resources/bean-injector.xml | 19 ++++++++++++ 13 files changed, 212 insertions(+) create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/BeanInjectorAutowiredExample.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredBean.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredDependency.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorConfig.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorJavaConfigExample.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanConstructorInjection.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanSetterInjection.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleDependency.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/BeanInjectorXMLExample.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanConstructorInjection.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanSetterInjection.java create mode 100644 spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleDependency.java create mode 100644 spring-core/src/main/resources/bean-injector.xml diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/BeanInjectorAutowiredExample.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/BeanInjectorAutowiredExample.java new file mode 100644 index 0000000000..43c0314619 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/BeanInjectorAutowiredExample.java @@ -0,0 +1,18 @@ +package com.baeldung.beaninjectiontypes.autowiredexample; + +import org.springframework.context.ApplicationContext; +import org.springframework.context.annotation.AnnotationConfigApplicationContext; +import org.springframework.context.annotation.ComponentScan; +import org.springframework.context.annotation.Configuration; + +@Configuration +@ComponentScan +public class BeanInjectorAutowiredExample { + + public static void main(String[] args) { + ApplicationContext ctx = new AnnotationConfigApplicationContext(BeanInjectorAutowiredExample.class); + SimpleAutowiredBean simpleBean = (SimpleAutowiredBean) ctx.getBean("simpleAutowiredBean"); + simpleBean.doSomething(); + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredBean.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredBean.java new file mode 100644 index 0000000000..1dcd35196b --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredBean.java @@ -0,0 +1,16 @@ +package com.baeldung.beaninjectiontypes.autowiredexample; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.stereotype.Component; + +@Component +public class SimpleAutowiredBean { + + @Autowired + private SimpleAutowiredDependency simpleAutowiredDependency; + + public void doSomething() { + System.out.println("I'm a Simple Bean. I'm doing something!"); + simpleAutowiredDependency.doSomethingElse(); + } +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredDependency.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredDependency.java new file mode 100644 index 0000000000..f456bafe4a --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredDependency.java @@ -0,0 +1,12 @@ +package com.baeldung.beaninjectiontypes.autowiredexample; + +import org.springframework.stereotype.Component; + +@Component +public class SimpleAutowiredDependency { + + public void doSomethingElse() { + System.out.println("I'm a simple autowired dependency! I'm doing something!"); + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorConfig.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorConfig.java new file mode 100644 index 0000000000..14e73187a8 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorConfig.java @@ -0,0 +1,29 @@ +package com.baeldung.beaninjectiontypes.javaconfigexample; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +@Configuration +public class BeanInjectorConfig { + + @Bean + public SimpleDependency simpleDependency() { + return new SimpleDependency(); + } + + // The following illustrates constructor injection: + + @Bean + public SimpleBeanConstructorInjection simpleBeanConstructorInjection() { + return new SimpleBeanConstructorInjection(simpleDependency()); + } + + // The following illustrates setter injection: + + @Bean + public SimpleBeanSetterInjection simpleBeanSetterInjection() { + SimpleBeanSetterInjection simpleBeanSetterInjection = new SimpleBeanSetterInjection(); + simpleBeanSetterInjection.setSimpleDependency(new SimpleDependency()); + return simpleBeanSetterInjection; + } +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorJavaConfigExample.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorJavaConfigExample.java new file mode 100644 index 0000000000..fd6e00105e --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorJavaConfigExample.java @@ -0,0 +1,19 @@ +package com.baeldung.beaninjectiontypes.javaconfigexample; + +import org.springframework.context.ApplicationContext; +import org.springframework.context.annotation.AnnotationConfigApplicationContext; + +public class BeanInjectorJavaConfigExample { + + public static void main(String[] args) { + ApplicationContext ctx = new AnnotationConfigApplicationContext(BeanInjectorConfig.class); + SimpleBeanConstructorInjection simpleBeanConstructorInjection = (SimpleBeanConstructorInjection) ctx.getBean("simpleBeanConstructorInjection"); + simpleBeanConstructorInjection.doSomething(); + + System.out.println("******************"); + + SimpleBeanSetterInjection simpleBeanSetterInjection = (SimpleBeanSetterInjection) ctx.getBean("simpleBeanSetterInjection"); + simpleBeanSetterInjection.doSomething(); + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanConstructorInjection.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanConstructorInjection.java new file mode 100644 index 0000000000..03918602c0 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanConstructorInjection.java @@ -0,0 +1,16 @@ +package com.baeldung.beaninjectiontypes.javaconfigexample; + +public class SimpleBeanConstructorInjection { + + private SimpleDependency simpleDependency; + + SimpleBeanConstructorInjection(SimpleDependency simpleDependency) { + this.simpleDependency = simpleDependency; + } + + public void doSomething() { + System.out.println("I'm a Simple Bean. My dependency is wired using constructor injection - I'm doing something!"); + simpleDependency.doSomethingElse(); + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanSetterInjection.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanSetterInjection.java new file mode 100644 index 0000000000..60c3d17997 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanSetterInjection.java @@ -0,0 +1,16 @@ +package com.baeldung.beaninjectiontypes.javaconfigexample; + +public class SimpleBeanSetterInjection { + + private SimpleDependency simpleDependency; + + public void doSomething() { + System.out.println("I'm a Simple Bean. My dependency is wired using setter injection - I'm doing something!"); + simpleDependency.doSomethingElse(); + } + + public void setSimpleDependency(SimpleDependency simpleDependency) { + this.simpleDependency = simpleDependency; + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleDependency.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleDependency.java new file mode 100644 index 0000000000..1867518b12 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleDependency.java @@ -0,0 +1,9 @@ +package com.baeldung.beaninjectiontypes.javaconfigexample; + +public class SimpleDependency { + + public void doSomethingElse() { + System.out.println("I'm a simple dependency! I'm doing something (else)!"); + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/BeanInjectorXMLExample.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/BeanInjectorXMLExample.java new file mode 100644 index 0000000000..a637d0f4a4 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/BeanInjectorXMLExample.java @@ -0,0 +1,17 @@ +package com.baeldung.beaninjectiontypes.xmlconfigexample; + +import org.springframework.context.ApplicationContext; +import org.springframework.context.support.ClassPathXmlApplicationContext; + +public class BeanInjectorXMLExample { + + public static void main(String[] args) { + ApplicationContext ctx = new ClassPathXmlApplicationContext("bean-injector.xml"); + SimpleBeanConstructorInjection simpleBeanConstructorInjection = (SimpleBeanConstructorInjection) ctx.getBean("simpleBeanConstructorInjection"); + simpleBeanConstructorInjection.doSomething(); + + System.out.println("********************"); + SimpleBeanSetterInjection simpleBeanSetterInjection = (SimpleBeanSetterInjection) ctx.getBean("simpleBeanSetterInjection"); + simpleBeanSetterInjection.doSomething(); + } +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanConstructorInjection.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanConstructorInjection.java new file mode 100644 index 0000000000..db6f58d10d --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanConstructorInjection.java @@ -0,0 +1,16 @@ +package com.baeldung.beaninjectiontypes.xmlconfigexample; + +public class SimpleBeanConstructorInjection { + + private SimpleDependency simpleDependency; + + SimpleBeanConstructorInjection(SimpleDependency simpleDependency) { + this.simpleDependency = simpleDependency; + } + + public void doSomething() { + System.out.println("I'm a Simple Bean. My dependency is wired using constructor injection - I'm doing something!"); + simpleDependency.doSomethingElse(); + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanSetterInjection.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanSetterInjection.java new file mode 100644 index 0000000000..7e845c3cd1 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanSetterInjection.java @@ -0,0 +1,16 @@ +package com.baeldung.beaninjectiontypes.xmlconfigexample; + +public class SimpleBeanSetterInjection { + + private SimpleDependency simpleDependency; + + public void setSimpleDependency(SimpleDependency simpleDependency) { + this.simpleDependency = simpleDependency; + } + + public void doSomething() { + System.out.println("I'm a Simple Bean. My dependency is wired using setter injection - I'm doing something!"); + simpleDependency.doSomethingElse(); + } + +} diff --git a/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleDependency.java b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleDependency.java new file mode 100644 index 0000000000..7b1f2ad35a --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleDependency.java @@ -0,0 +1,9 @@ +package com.baeldung.beaninjectiontypes.xmlconfigexample; + +public class SimpleDependency { + + public void doSomethingElse() { + System.out.println("I'm a simple dependency! I'm doing something (else)!"); + } + +} diff --git a/spring-core/src/main/resources/bean-injector.xml b/spring-core/src/main/resources/bean-injector.xml new file mode 100644 index 0000000000..cb084a405f --- /dev/null +++ b/spring-core/src/main/resources/bean-injector.xml @@ -0,0 +1,19 @@ + + + + + + + + + + + + + + \ No newline at end of file