Spring 4 Property Source Example

spring+4+property+source+example

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


 

    
package com.cv.spring;



import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import org.springframework.context.support.AbstractApplicationContext;



import com.cv.spring.configuration.AppConfig;

import com.cv.spring.service.FileService;



public class AppMain {

  

  public static void main(String args[]){

    AbstractApplicationContext  context = new AnnotationConfigApplicationContext(AppConfig.class);

    FileService service = (FileService) context.getBean("fileService");

    

    service.readValues();

    context.close();

  }

  

}

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


 

    
package com.cv.spring.configuration;



import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;



@Configuration

@ComponentScan(basePackages = "com.cv.spring")

@PropertySource(value = { "classpath:application.properties" })

public class AppConfig {



  /*

   * PropertySourcesPlaceHolderConfigurer Bean only required for @Value("{}") annotations.

   * Remove this bean if you are not using @Value annotations for injecting properties.

   */

  @Bean

  public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {

    return new PropertySourcesPlaceholderConfigurer();

  }

}

This is FileService.java file having the service/business logic to call the DAO layer and get the information from database.


 

    
package com.cv.spring.service;



public interface FileService {



  void readValues();

}

This is FileServiceImpl.java file having the service/business logic to call the DAO layer and get the information from database.


 

    
package com.cv.spring.service;



import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.core.env.Environment;

import org.springframework.stereotype.Service;



@Service("fileService")

public class FileServiceImpl implements FileService {



  @Value("${sourceLocation:c:/temp/input}")

  private String source;



  @Value("${destinationLocation:c:/temp/output}")

  private String destination;



  @Autowired

  private Environment environment;



  public void readValues() {



    System.out.println("Getting property via Spring Environment :"

        + environment.getProperty("jdbc.driverClassName"));



    

    System.out.println("Source Location : " + source);

    System.out.println("Destination Location : " + destination);

    

  }



}



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>Spring4PropertySourceExample</artifactId>
	<packaging>war</packaging>
	<version>1.0.0</version>
	<name>Spring4PropertySourceExample Maven Webapp</name>
	http://maven.apache.org


	<properties>
		<springframework.version>4.2.0.RELEASE</springframework.version>
		<hibernate.version>4.3.10.Final</hibernate.version>
		5.1.31
	</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>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${springframework.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${springframework.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>${springframework.version}</version>
		</dependency>

		
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
			<version>${hibernate.version}</version>
		</dependency>

		
		<dependency>
			<groupId>javax.validation</groupId>
			<artifactId>validation-api</artifactId>
			<version>1.1.0.Final</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-validator</artifactId>
			<version>5.1.3.Final</version>
		</dependency>

		
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>${mysql.connector.version}</version>
		</dependency>

		
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>javax.servlet.jsp-api</artifactId>
			<version>2.3.1</version>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</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>
				<plugin>
					<groupId>org.apache.maven.plugins</groupId>
					<artifactId>maven-war-plugin</artifactId>
					<version>2.4</version>
					<configuration>
						<warSourceDirectory>src/main/webapp</warSourceDirectory>
						<warName>Spring4PropertySourceExample</warName>
						<failOnMissingWebXml>false</failOnMissingWebXml>
					</configuration>
				</plugin>
			</plugins>
		</pluginManagement>
		<finalName>Spring4PropertySourceExample</finalName>
	</build>
</project>


This is customer.properties properties file and these properties are used in the application.



jdbc.driverClassName = com.mysql.jdbc.Driver

jdbc.url = jdbc:mysql://localhost:3306/hibernate

jdbc.username = root

jdbc.password = root

hibernate.dialect = org.hibernate.dialect.MySQLDialect

hibernate.show_sql = false

hibernate.format_sql = false

sourceLocation = /dev/input



















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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