Spring 4 Configuration Annotation

spring+4+configuration+annotation

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This is DemoManager.java file having the source code to execute business logic.



 

    
package com.cv.spring.core.beans;
/**
@author Chandra Vardhan
*/
public interface DemoManager {
  public String getServiceName();
}


This is DemoManagerImpl.java file having the source code to execute business logic.



 

    
package com.cv.spring.core.beans;


/**
@author Chandra Vardhan
*/
public class DemoManagerImpl implements DemoManager {
  @Override
  public String getServiceName() {
    return "My first service with Spring 3";
  }
}


This is ApplicationConfiguration.java file having the source code to execute business logic.



 

    
package com.cv.spring.core.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.cv.spring.core.beans.DemoManager;
import com.cv.spring.core.beans.DemoManagerImpl;
/**
@author Chandra Vardhan
*/
@Configuration
public class ApplicationConfiguration {

  @Bean(name = "demoService")
  public DemoManager demoService() {
    return new DemoManagerImpl();
  }

}


This is MainApplication.java file having the source code to execute business logic.



 

    
package com.cv.spring.core.verify;

import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.cv.spring.core.beans.DemoManager;
import com.cv.spring.core.config.ApplicationConfiguration;

/**
@author Chandra Vardhan
*/
public class MainApplication {
  public static void main(String[] args) {
    ApplicationContext context = new AnnotationConfigApplicationContext(
        ApplicationConfiguration.class);
    DemoManager obj = (DemoManagercontext.getBean("demoService");
    System.out.println(obj.getServiceName());
  }
}


This is pom.xml file having the entries of dependency jars and information to build the application .



	
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.cv.spring</groupId> <artifactId>Spring4ConfigurationAnnotation</artifactId> <packaging>jar</packaging> <version>1.0.0</version> <name>Spring4ConfigurationAnnotation Maven Webapp</name> http://maven.apache.org <properties> <springframework.version>4.2.0.RELEASE</springframework.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${springframework.version}</version> </dependency> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>1.1.0.Final</version> </dependency> </dependencies> <build> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </pluginManagement> <finalName>Spring4ConfigurationAnnotation</finalName> </build> </project>


This is log4j.properties file having the entries for logging the information into the console/file.




#By default enabling Console appender
# Root logger option
log4j.rootLogger=INFO, stdout

# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-5p [%c]:%L -->> %m%n

# Redirect log messages to a log file
#log4j.appender.file=org.apache.log4j.RollingFileAppender
#log4j.appender.file.File=C:\servlet-application.log
#log4j.appender.file.MaxFileSize=5MB
#log4j.appender.file.MaxBackupIndex=10
#log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n


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