Camel read file from classpath resource?

I have a file on the classpath at "resources/file.txt" in a Spring Boot app.

How do i reference this in a Camel route?

I have tried:

from("file:resource:classpath:?fileName=file.txt") and variations on it. Nothing seems to work.

Any workaround here pls?

Thanks

You can use the Simple Language

However, the file must not contain instructions for the simple language that it cannot execute, e.g. "${foo.bar}".

In this case, a small Groovy Script will help.

pom.xml

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-groovy</artifactId>
    <version>${version.camel}</version>
</dependency>

ReadClasspathResource.groovy

import java.nio.charset.Charset
import java.nio.file.Files
import java.nio.file.Path
import java.nio.file.Paths

import org.apache.camel.Exchange

if ( ! request.body ) {
    throw new IllegalStateException('ResourcePath in body expected.')
}

URL url = Exchange.getClass().getResource(request.body)
Path path = Paths.get(url.toURI())
result = new String(Files.readAllBytes(path), Charset.forName("UTF-8"))

Save the file in classpath, e.g. /src/main/resources/groovy/ReadClasspathResource.groovy

CamelReadClasspathResourceTest.java

/**
 * Read the file /src/main/resources/foobar/Connector.json
 */
public class CamelReadClasspathResourceTest extends CamelTestSupport
{
    @Test
    public void run()
        throws Exception
    {
        Exchange exchange = template.send("direct:start", (Processor)null);

        Object body = exchange.getMessage().getBody();
        System.out.println("body ("+body.getClass().getName()+"): "+body.toString());
    }

    @Override
    protected RouteBuilder createRouteBuilder() {
        return new RouteBuilder() {
            public void configure() {
                from("direct:start")
                    .setBody().constant("/foobar/Connector.json")
                    .setBody().groovy("resource:classpath:/groovy/ReadClasspathResource.groovy")
                    .to("mock:result");
            }
        };
    }
}