I’m getting into Camel for the first time, and working through some of the examples in Camel In Action.

These posts are my efforts at some of the examples, working on a Mac using Spring STS.

The following example is pretty much a copy and paste from the Camel In Action Book, but I’ve broken it down into simple steps.

Create the Project

Open Spring STS or Eclipse and create a new Maven Project as follows:

File -> New -> Maven Project

Check Create a Simple Project

Set the Group Id to: com.skills421.examples.camel

Set the Artifact Id to: CamelBasics

Click Finish.

Edit the Maven Dependencies

Next edit the pom.xml file as follows:

<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>com.skills421.examples.camel</groupId>
<artifactId>CamelBasics</artifactId>
<version>0.0.1-SNAPSHOT</version>

<!-- Core Camel -->
<dependencies>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-core</artifactId>
<version>2.5.0</version>
</dependency>

<!-- JUnit for testing -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>

</dependencies>

</project>

pom.xml

This will download camel-core-2.5.0.jar, commons-logging and commons-management for Camel and its dependencies.

It will also download junit-4.11.jar and ham crest-core for JUnit and its dependencies.

Create FileCopier.java

in the src/main folder create the following code in the com.skills421.examples.camel.basics package

package com.skills421.examples.camel.basics;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class FileCopier
{
public void copyFile(File source, File dest) throws IOException
{

OutputStream out = new FileOutputStream(dest);
byte[] buffer = new byte[(int) source.length()];
FileInputStream in = new FileInputStream(source);
in.read(buffer);

try
{
out.write(buffer);
}
finally
{
out.close();
in.close();
}
}
}

FileCopier.java

Create The JUnit Test to test the code

Right click on FileCopier.java and select New -> JUnit Test Case

Change the source folder to: CamelBasics/src/test/java and click Finish

Now edit the FileCopierTest.java code as follows

package com.skills421.examples.camel.basics;

import static org.junit.Assert.*;

import java.io.File;
import java.io.IOException;

import org.junit.Test;

public class FileCopierTest
{

@Test
public void testCopyDirectory()
{
File inboxDir = new File("/Users/johndunning/Desktop/Camel/CamelIn");
File outboxDir = new File("/Users/johndunning/Desktop/Camel/CamelOut");

FileCopier fileCopier = new FileCopier();

try
{
outboxDir.mkdir();
File[] files = inboxDir.listFiles();

for (File source : files)
{
if (source.isFile())
{
File dest = new File(outboxDir.getPath() + File.separator + source.getName());
fileCopier.copyFile(source, dest);
}
}
}
catch (IOException e)
{
fail(e.getMessage());
}
}

}

FileCopier.java

Note that you will need to change the inboxDir and outboxDir to a directory on your own computer system.
Create a few files in inboxDir that you expect to be copied to outboxDir

Run the JUnit Test

Right click on you FileCopierTest.java and select Run As -> JUnit Test

The code should execute and produce a green bar to show success.

If you look in the outboxDir directory that you specified, you should see that the files have been copied successfully