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Add XML, JavaConfig and Autowired examples.

This commit is contained in:
orrym 2018-01-27 18:11:07 +02:00
parent fab4aec7a1
commit 8f4df6b903
13 changed files with 212 additions and 0 deletions
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18
spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/BeanInjectorAutowiredExample.java Normal file
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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();
}
}

16
spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredBean.java Normal file
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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();
}
}

12
spring-core/src/main/java/com/baeldung/beaninjectiontypes/autowiredexample/SimpleAutowiredDependency.java Normal file
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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!");
}
}

29
spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorConfig.java Normal file
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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;
}
}

19
spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/BeanInjectorJavaConfigExample.java Normal file
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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();
}
}

16
spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanConstructorInjection.java Normal file
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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();
}
}

16
spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleBeanSetterInjection.java Normal file
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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;
}
}

9
spring-core/src/main/java/com/baeldung/beaninjectiontypes/javaconfigexample/SimpleDependency.java Normal file
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package com.baeldung.beaninjectiontypes.javaconfigexample;
public class SimpleDependency {
public void doSomethingElse() {
System.out.println("I'm a simple dependency! I'm doing something (else)!");
}
}

17
spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/BeanInjectorXMLExample.java Normal file
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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();
}
}

16
spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanConstructorInjection.java Normal file
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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();
}
}

16
spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleBeanSetterInjection.java Normal file
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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();
}
}

9
spring-core/src/main/java/com/baeldung/beaninjectiontypes/xmlconfigexample/SimpleDependency.java Normal file
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package com.baeldung.beaninjectiontypes.xmlconfigexample;
public class SimpleDependency {
public void doSomethingElse() {
System.out.println("I'm a simple dependency! I'm doing something (else)!");
}
}

19
spring-core/src/main/resources/bean-injector.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="simpleDependency"
class="com.baeldung.beaninjectiontypes.xmlconfigexample.SimpleDependency" />
<bean id="simpleBeanConstructorInjection"
class="com.baeldung.beaninjectiontypes.xmlconfigexample.SimpleBeanConstructorInjection">
<constructor-arg ref="simpleDependency" />
</bean>
<bean id="simpleBeanSetterInjection"
class="com.baeldung.beaninjectiontypes.xmlconfigexample.SimpleBeanSetterInjection">
<property name="simpleDependency" ref="simpleDependency" />
</bean>
</beans>