Spring4 Basic IOC Project

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

package com.cv.spring.core; public interface Knight {      void embarkOnQuest();    }

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

package com.cv.spring.core; import org.springframework.context.ApplicationContext; import org.springframework.context.support.FileSystemXmlApplicationContext; public class KnightTest {   /**    * @param args    */   public static void main(String[] args) {     String configLocation = "src/main/resources/applicationContext.xml";     ApplicationContext factory = new FileSystemXmlApplicationContext(configLocation);     Knight knight = (Knight) factory.getBean("knight");     knight.embarkOnQuest();   } }

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

package com.cv.spring.core; import org.apache.log4j.Logger; public class NQuest implements Quest {      private final static Logger LOGGER = Logger.getLogger(NQuest.class);      @Override   public void embark() {     LOGGER.info("embark() called : : NQuest");   } }

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

package com.cv.spring.core; public interface Quest {   void embark(); }

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

package com.cv.spring.core; import org.apache.log4j.Logger; public class SKnight implements Knight {      private final static Logger LOGGER = Logger.getLogger(SKnight.class);      private Quest quest;   public SKnight() {   }   public SKnight(Quest quest) {     this.quest = quest;   }   @Override   public void embarkOnQuest() {     LOGGER.info("embarkOnQuest() called : : SKnight");     quest.embark();   } }

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">.0" encoding="UTF-8"?> <modelVersion>4.0.0</modelVersion> <groupId>com.cv.spring.core</groupId> <artifactId>Spring4BasicIOC</artifactId> <name>Spring4BasicIOC</name> <packaging>jar</packaging> <version>1.0</version> <properties> <java-version>1.8</java-version> <log4j-version>1.2.16</log4j-version> <org.springframework-version>4.2.0.RELEASE</org.springframework-version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</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>Spring4BasicIOC</finalName> </build> </project>

This is applicationContext.xml file having the spring configuration properties.

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <bean id="knight" class="com.cv.spring.core.SKnight"> <constructor-arg ref="quest" /> </bean> <bean id="quest" class="com.cv.spring.core.NQuest" /> </beans>

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