camel file copy example using spring

File copy example in camel using spring with simple steps.


In this example we will learn how can we copy file from one location to other location using camel through spring.

  • In eclipse go to MyFirstCamelProject that we created in earlier page and right click on src/main/java to create package.New -> package



  • Give any name for example com.preparationforinterview.spring.filetransfer and click on Finish



  • Right click on package and create a java class for example FileTransferinSpring.



  • Right click on src/main/resources and and create one .xml file for example MySpring.xml.



  • Create two folder one with name input and other as output.At the end we will get following structure



  • Create any file in input folder.I created text file with name Hello.

  • Add following dependency in pom.xml file.you can use any latest version.

  •  	
    <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">
    	<modelVersion>4.0.0</modelVersion>
    	<groupId>MyFirstCamelProject</groupId>
    	<artifactId>MyFirstCamelProject</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    	<dependencies>
    		<dependency>
    			<groupId>org.apache.camel</groupId>
    			<artifactId>camel-core</artifactId>
    			<version>2.13.0</version>
    		</dependency>
    		<dependency>
    			<groupId>org.apache.camel</groupId>
    			<artifactId>camel-spring</artifactId>
    			<version>2.13.0</version>
    		</dependency>
    	</dependencies>
    </project>
    
  • Run mvn:install from command prompt or if you are using Eclipse right click on pom.xml and run mvn install.It will download camel jars

  • Copy below code in FileTransferinSpring.

  •  
    package com.preparationforinterview.spring.filetransfer;
    import org.springframework.context.support.AbstractApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    public class FileTransferinSpring {
    	public static void main(String args[]) throws InterruptedException {
    		@SuppressWarnings("resource")
    		AbstractApplicationContext ctx = new ClassPathXmlApplicationContext(
    				"MySpring.xml");
    		ctx.start();
    		System.out.println("Entered>>>>>");
    		Thread.sleep(5 * 60 * 1000);
    		ctx.stop();
    	}
    
    }
    

    Explain

    In this example we are loading spring file and starting CamelContext.When we start CamelContext ,it will start to read message from input and will send it to destination.

  • Write lines in MySpring.xml.

  •  	
    	<beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camel="http://camel.apache.org/schema/spring"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans 
    		http://www.springframework.org/schema/beans/spring-beans.xsd          
    		http://camel.apache.org/schema/spring 
    		http://camel.apache.org/schema/spring/camel-spring.xsd">
    
    	<camelContext xmlns="http://camel.apache.org/schema/spring">
    		<route>
    			<from uri="file:input?noop=true" />
    			<to uri="file:output" />
    		</route>
    	</camelContext>
    
    </beans>
    
    

    Explain

    Last entry in xml file <camelContext xmlns="http://camel.apache.org/schema/spring"/> creates SpringCamelContext which provides CamelContext.In CamelContext we have add route so when we start spring application that routes also start

    To check the output right click on FileTransferinSpring.java and run it. It will copy file in output folder from input folder
    To run the program from command prompt,open command prompt and go to project location and run below command.
    mvn compile exec:java -Dexec.mainClass=com.preparationforinterview.spring.filetransfer.FileTransferinSpring

Download source code

Camel File Copy Example Using Spring



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