Camel File Component - NoTypeConversionAvailableException

[annasw]

Hello,

I am using Camel File Component. My code works fine from Eclipse but does not work from jar file. I am getting NoTypeConversionAvailableException when running my code from executable jar file.

ERROR - Caused by: [org.apache.camel.InvalidPayloadException - No body available of type: java.lang.String but has value: GenericFile[myFileName] of type: org.apache.camel.component.file.GenericFile on: GenericFileMessage with file: GenericFile[myFileName]. Caused by: No type converter available to convert from type: org.apache.camel.component.file.GenericFile to the required type: java.lang.String with value GenericFile[myFileName]. Exchange[GenericFileMessage with file: GenericFile[myFileName]]. Caused by: [org.apache.camel.NoTypeConversionAvailableException - No type converter available to convert from type: org.apache.camel.component.file.GenericFile to the required type: java.lang.String with value GenericFile[myFileName]]]

Here is my route:

I am not sure whether any additional things I need to get File component working from a jar? Has anyone seeing this error before? Thank you very much.

Thank you very much in advance,

Anna

[njiang]

Can I have a look at your class path ?

Please make sure you are using camel-spring and not using camel-spring-osgi when you run your code from executable jar file.

[annasw]

My classpath does not have camel-osgi.jar/camel-spring-osgi.jar

Here are the jars on my classpath: lib/java/junit-3.8.1.jar, lib/java/log4j-1.2.9.jar, programs/eclipse/mysql-connector-java-5.1.6-bin.jar, programs/log4j/log4j.properties, programs/log4j/log4jproperties.jar, programs/spring-framework-2.5.5/dist/spring.jar, programs/spring-framework-2.5.5/lib/jakarta-commons/commons-logging.jar, programs/spring-framework-2.5.5/lib/log4j-1.2.15.jar, programs/eclipse/mysql-connector-java-5.1.6-bin.jar.

Pom dependencies:

Thanks!

Edited by: asilchenko on May 12, 2010 1:56 PM

[davsclaus]

How do you exactly start your app as a jar file?

[annasw]

java -jar target/myJar-1.0-SNAPSHOT.one-jar.jar

I am using onejar-maven-plugin to generate jar. I have used this many times before to generate jar with dependencies. It always works fine but not when I am using Camel File Component.

This morning I tried changing route to

And got similar but little different error:

ERROR - Caused by: [org.apache.camel.InvalidPayloadException - No body available of type: java.io.InputStream but has value: GenericFile[myFileName] of type: org.apache.camel.component.file.GenericFile on: GenericFileMessage with file: GenericFile[myFileName]. Caused by: No type converter available to convert from type: org.apache.camel.component.file.GenericFile to the required type: java.io.InputStream with value GenericFile[myFileName]. Exchange[GenericFileMessage with file: GenericFile[myFileName]]. Caused by: [org.apache.camel.NoTypeConversionAvailableException - No type converter available to convert from type: org.apache.camel.component.file.GenericFile to the required type: java.io.InputStream with value GenericFile[myFileName]]]

Thank you very much for your time!

Edited by: asilchenko on May 12, 2010 3:57 PM

Edited by: asilchenko on May 12, 2010 3:58 PM

Edited by: asilchenko on May 12, 2010 4:00 PM

[davsclaus]

Maybe that onejar maven tool do only put .class files in the one big JAR. You have to include files from META-INF as well.

And I suspect it can't merge the META-INF .../TypeConverter file which tells Camel which converters it should find in this JAR.

So start it in normal situations using a -cp and provide the classpath.

Or if using maven, you can just use mvn camel:run

[annasw]

My project does not have META-INF directory or TypeConverter file. It works without it in Eclipse. Do I need to create META-INF directory in my project? I need to get Camel Component running from jar without maven.

Thank you very much!

Edited by: asilchenko on May 12, 2010 4:43 PM

[davsclaus]

Dont mess with the .jars.

Just start it using a script which sets the classpath and then invoke you main class.

[annasw]

I was hoping to satisfy a requirement by using executable jar file but looks like it might not be a best way.

Thank you,

Anna

Edited by: asilchenko on May 12, 2010 6:40 PM

[annasw]

I am trying to add missing TypeConverter to classpath. I am seeing TypeConverter in camel-core-2.2.0.jar and some other jars. Could you please let me know which one gets used? Which jar I need to include for TypeConverter?

Thank you very much!

Edited by: asilchenko on May 13, 2010 8:11 PM

[davsclaus]

You cannot do this.

Its a special file in META-INF/services/org/apache/camel named TypeConverter which has a list of the package names it should scan.

And if you merge many .jars -> 1 jar then the TypeConverter file should be merged as well to include all the package names from all the jars. Right now I bet it just add the TypeConverter file from either the first or last .jar.

[annasw]

Thank you for your response. I could not get META-INF/services/org/apache/camel to work. But I got around my problem by sending message thought bean processor class. And, everything works now from executable jar file.

public InputStream convertBody(GenericFile file)

    {

         InputStream inputStream = null;

         try

          {

               inputStream = new BufferedInputStream(new FileInputStream((File)file.getFile()));

          }

         catch (FileNotFoundException e)

          {

               // TODO Auto-generated catch block

               e.printStackTrace();

          }          

        return inputStream;

    }

Thank you very much,

Anna